Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_32.cpp @ 2416:38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
Summary: After appropriate testing, we need to turn on EnableMethodHandles and EnableInvokeDynamic by default.
Reviewed-by: never, kvn, jrose, phh
| author | twisti |
|---|---|
| date | Thu, 31 Mar 2011 02:31:57 -0700 |
| parents | 638119ce7cfd |
| children | 92add02409c9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "asm/assembler.hpp" | |
| 27 #include "interpreter/bytecodeHistogram.hpp" | |
| 28 #include "interpreter/interpreter.hpp" | |
| 29 #include "interpreter/interpreterGenerator.hpp" | |
| 30 #include "interpreter/interpreterRuntime.hpp" | |
| 31 #include "interpreter/templateTable.hpp" | |
| 32 #include "oops/arrayOop.hpp" | |
| 33 #include "oops/methodDataOop.hpp" | |
| 34 #include "oops/methodOop.hpp" | |
| 35 #include "oops/oop.inline.hpp" | |
| 36 #include "prims/jvmtiExport.hpp" | |
| 37 #include "prims/jvmtiThreadState.hpp" | |
| 38 #include "runtime/arguments.hpp" | |
| 39 #include "runtime/deoptimization.hpp" | |
| 40 #include "runtime/frame.inline.hpp" | |
| 41 #include "runtime/sharedRuntime.hpp" | |
| 42 #include "runtime/stubRoutines.hpp" | |
| 43 #include "runtime/synchronizer.hpp" | |
| 44 #include "runtime/timer.hpp" | |
| 45 #include "runtime/vframeArray.hpp" | |
| 46 #include "utilities/debug.hpp" | |
| 0 | 47 |
| 48 #define __ _masm-> | |
| 49 | |
| 50 | |
| 51 #ifndef CC_INTERP | |
| 52 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
| 53 const int bci_offset = frame::interpreter_frame_bcx_offset * wordSize; | |
| 54 const int locals_offset = frame::interpreter_frame_locals_offset * wordSize; | |
| 55 | |
| 56 //------------------------------------------------------------------------------------------------------------------------ | |
| 57 | |
| 58 address TemplateInterpreterGenerator::generate_StackOverflowError_handler() { | |
| 59 address entry = __ pc(); | |
| 60 | |
| 61 // Note: There should be a minimal interpreter frame set up when stack | |
| 62 // overflow occurs since we check explicitly for it now. | |
| 63 // | |
| 64 #ifdef ASSERT | |
| 65 { Label L; | |
| 304 | 66 __ lea(rax, Address(rbp, |
| 0 | 67 frame::interpreter_frame_monitor_block_top_offset * wordSize)); |
| 304 | 68 __ cmpptr(rax, rsp); // rax, = maximal rsp for current rbp, |
| 0 | 69 // (stack grows negative) |
| 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 exception | |
| 80 // happened | |
| 81 __ empty_expression_stack(); | |
| 82 __ empty_FPU_stack(); | |
| 83 // throw exception | |
| 84 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); | |
| 85 return entry; | |
| 86 } | |
| 87 | |
| 88 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) { | |
| 89 address entry = __ pc(); | |
| 90 // expression stack must be empty before entering the VM if an exception happened | |
| 91 __ empty_expression_stack(); | |
| 92 __ empty_FPU_stack(); | |
| 93 // setup parameters | |
| 94 // ??? convention: expect aberrant index in register rbx, | |
| 95 __ lea(rax, ExternalAddress((address)name)); | |
| 96 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), rax, rbx); | |
| 97 return entry; | |
| 98 } | |
| 99 | |
| 100 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
| 101 address entry = __ pc(); | |
| 102 // object is at TOS | |
| 304 | 103 __ pop(rax); |
| 0 | 104 // expression stack must be empty before entering the VM if an exception |
| 105 // happened | |
| 106 __ empty_expression_stack(); | |
| 107 __ empty_FPU_stack(); | |
| 108 __ call_VM(noreg, | |
| 109 CAST_FROM_FN_PTR(address, | |
| 110 InterpreterRuntime::throw_ClassCastException), | |
| 111 rax); | |
| 112 return entry; | |
| 113 } | |
| 114 | |
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115 // Arguments are: required type at TOS+4, failing object (or NULL) at TOS. |
| 710 | 116 address TemplateInterpreterGenerator::generate_WrongMethodType_handler() { |
| 117 address entry = __ pc(); | |
| 118 | |
| 119 __ pop(rbx); // actual failing object is at TOS | |
| 120 __ pop(rax); // required type is at TOS+4 | |
| 121 | |
| 122 __ verify_oop(rbx); | |
| 123 __ verify_oop(rax); | |
| 124 | |
| 125 // Various method handle types use interpreter registers as temps. | |
| 126 __ restore_bcp(); | |
| 127 __ restore_locals(); | |
| 128 | |
| 129 // Expression stack must be empty before entering the VM for an exception. | |
| 130 __ empty_expression_stack(); | |
| 131 __ empty_FPU_stack(); | |
| 132 __ call_VM(noreg, | |
| 133 CAST_FROM_FN_PTR(address, | |
| 134 InterpreterRuntime::throw_WrongMethodTypeException), | |
| 135 // pass required type, failing object (or NULL) | |
| 136 rax, rbx); | |
| 137 return entry; | |
| 138 } | |
| 139 | |
| 140 | |
| 0 | 141 address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) { |
| 142 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
| 143 address entry = __ pc(); | |
| 144 if (pass_oop) { | |
| 145 // object is at TOS | |
| 304 | 146 __ pop(rbx); |
| 0 | 147 } |
| 148 // expression stack must be empty before entering the VM if an exception happened | |
| 149 __ empty_expression_stack(); | |
| 150 __ empty_FPU_stack(); | |
| 151 // setup parameters | |
| 152 __ lea(rax, ExternalAddress((address)name)); | |
| 153 if (pass_oop) { | |
| 154 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), rax, rbx); | |
| 155 } else { | |
| 156 if (message != NULL) { | |
| 157 __ lea(rbx, ExternalAddress((address)message)); | |
| 158 } else { | |
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159 __ movptr(rbx, NULL_WORD); |
| 0 | 160 } |
| 161 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx); | |
| 162 } | |
| 163 // throw exception | |
| 164 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
| 165 return entry; | |
| 166 } | |
| 167 | |
| 168 | |
| 169 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
| 170 address entry = __ pc(); | |
| 171 // NULL last_sp until next java call | |
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172 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 173 __ dispatch_next(state); |
| 174 return entry; | |
| 175 } | |
| 176 | |
| 177 | |
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178 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step) { |
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179 TosState incoming_state = state; |
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180 address entry = __ pc(); |
| 0 | 181 |
| 182 #ifdef COMPILER2 | |
| 183 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases | |
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184 if ((incoming_state == ftos && UseSSE < 1) || (incoming_state == dtos && UseSSE < 2)) { |
| 0 | 185 for (int i = 1; i < 8; i++) { |
| 186 __ ffree(i); | |
| 187 } | |
| 188 } else if (UseSSE < 2) { | |
| 189 __ empty_FPU_stack(); | |
| 190 } | |
| 191 #endif | |
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192 if ((incoming_state == ftos && UseSSE < 1) || (incoming_state == dtos && UseSSE < 2)) { |
| 0 | 193 __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled"); |
| 194 } else { | |
| 195 __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled"); | |
| 196 } | |
| 197 | |
| 198 // In SSE mode, interpreter returns FP results in xmm0 but they need | |
| 199 // to end up back on the FPU so it can operate on them. | |
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200 if (incoming_state == ftos && UseSSE >= 1) { |
| 304 | 201 __ subptr(rsp, wordSize); |
| 0 | 202 __ movflt(Address(rsp, 0), xmm0); |
| 203 __ fld_s(Address(rsp, 0)); | |
| 304 | 204 __ addptr(rsp, wordSize); |
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205 } else if (incoming_state == dtos && UseSSE >= 2) { |
| 304 | 206 __ subptr(rsp, 2*wordSize); |
| 0 | 207 __ movdbl(Address(rsp, 0), xmm0); |
| 208 __ fld_d(Address(rsp, 0)); | |
| 304 | 209 __ addptr(rsp, 2*wordSize); |
| 0 | 210 } |
| 211 | |
| 212 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_return_entry_for in interpreter"); | |
| 213 | |
| 214 // Restore stack bottom in case i2c adjusted stack | |
| 304 | 215 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
| 0 | 216 // and NULL it as marker that rsp is now tos until next java call |
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217 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 218 |
| 219 __ restore_bcp(); | |
| 220 __ restore_locals(); | |
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221 |
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222 Label L_got_cache, L_giant_index; |
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223 if (EnableInvokeDynamic) { |
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224 __ cmpb(Address(rsi, 0), Bytecodes::_invokedynamic); |
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225 __ jcc(Assembler::equal, L_giant_index); |
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226 } |
| 1565 | 227 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
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228 __ bind(L_got_cache); |
| 0 | 229 __ movl(rbx, Address(rbx, rcx, |
| 304 | 230 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + |
| 0 | 231 ConstantPoolCacheEntry::flags_offset())); |
| 304 | 232 __ andptr(rbx, 0xFF); |
| 233 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); | |
| 0 | 234 __ dispatch_next(state, step); |
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235 |
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236 // out of the main line of code... |
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237 if (EnableInvokeDynamic) { |
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238 __ bind(L_giant_index); |
| 1565 | 239 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
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240 __ jmp(L_got_cache); |
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241 } |
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242 |
| 0 | 243 return entry; |
| 244 } | |
| 245 | |
| 246 | |
| 247 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { | |
| 248 address entry = __ pc(); | |
| 249 | |
| 250 // In SSE mode, FP results are in xmm0 | |
| 251 if (state == ftos && UseSSE > 0) { | |
| 304 | 252 __ subptr(rsp, wordSize); |
| 0 | 253 __ movflt(Address(rsp, 0), xmm0); |
| 254 __ fld_s(Address(rsp, 0)); | |
| 304 | 255 __ addptr(rsp, wordSize); |
| 0 | 256 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 257 __ subptr(rsp, 2*wordSize); |
| 0 | 258 __ movdbl(Address(rsp, 0), xmm0); |
| 259 __ fld_d(Address(rsp, 0)); | |
| 304 | 260 __ addptr(rsp, 2*wordSize); |
| 0 | 261 } |
| 262 | |
| 263 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_deopt_entry_for in interpreter"); | |
| 264 | |
| 265 // The stack is not extended by deopt but we must NULL last_sp as this | |
| 266 // entry is like a "return". | |
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267 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 268 __ restore_bcp(); |
| 269 __ restore_locals(); | |
| 270 // handle exceptions | |
| 271 { Label L; | |
| 272 const Register thread = rcx; | |
| 273 __ get_thread(thread); | |
| 304 | 274 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 275 __ jcc(Assembler::zero, L); |
| 276 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
| 277 __ should_not_reach_here(); | |
| 278 __ bind(L); | |
| 279 } | |
| 280 __ dispatch_next(state, step); | |
| 281 return entry; | |
| 282 } | |
| 283 | |
| 284 | |
| 285 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
| 286 int i = 0; | |
| 287 switch (type) { | |
| 288 case T_BOOLEAN: i = 0; break; | |
| 289 case T_CHAR : i = 1; break; | |
| 290 case T_BYTE : i = 2; break; | |
| 291 case T_SHORT : i = 3; break; | |
| 292 case T_INT : // fall through | |
| 293 case T_LONG : // fall through | |
| 294 case T_VOID : i = 4; break; | |
| 295 case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE | |
| 296 case T_DOUBLE : i = 6; break; | |
| 297 case T_OBJECT : // fall through | |
| 298 case T_ARRAY : i = 7; break; | |
| 299 default : ShouldNotReachHere(); | |
| 300 } | |
| 301 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); | |
| 302 return i; | |
| 303 } | |
| 304 | |
| 305 | |
| 306 address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { | |
| 307 address entry = __ pc(); | |
| 308 switch (type) { | |
| 309 case T_BOOLEAN: __ c2bool(rax); break; | |
| 304 | 310 case T_CHAR : __ andptr(rax, 0xFFFF); break; |
| 0 | 311 case T_BYTE : __ sign_extend_byte (rax); break; |
| 312 case T_SHORT : __ sign_extend_short(rax); break; | |
| 313 case T_INT : /* nothing to do */ break; | |
| 314 case T_DOUBLE : | |
| 315 case T_FLOAT : | |
| 316 { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); | |
| 304 | 317 __ pop(t); // remove return address first |
| 0 | 318 // Must return a result for interpreter or compiler. In SSE |
| 319 // mode, results are returned in xmm0 and the FPU stack must | |
| 320 // be empty. | |
| 321 if (type == T_FLOAT && UseSSE >= 1) { | |
| 322 // Load ST0 | |
| 323 __ fld_d(Address(rsp, 0)); | |
| 324 // Store as float and empty fpu stack | |
| 325 __ fstp_s(Address(rsp, 0)); | |
| 326 // and reload | |
| 327 __ movflt(xmm0, Address(rsp, 0)); | |
| 328 } else if (type == T_DOUBLE && UseSSE >= 2 ) { | |
| 329 __ movdbl(xmm0, Address(rsp, 0)); | |
| 330 } else { | |
| 331 // restore ST0 | |
| 332 __ fld_d(Address(rsp, 0)); | |
| 333 } | |
| 334 // and pop the temp | |
| 304 | 335 __ addptr(rsp, 2 * wordSize); |
| 336 __ push(t); // restore return address | |
| 0 | 337 } |
| 338 break; | |
| 339 case T_OBJECT : | |
| 340 // retrieve result from frame | |
| 304 | 341 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
| 0 | 342 // and verify it |
| 343 __ verify_oop(rax); | |
| 344 break; | |
| 345 default : ShouldNotReachHere(); | |
| 346 } | |
| 347 __ ret(0); // return from result handler | |
| 348 return entry; | |
| 349 } | |
| 350 | |
| 351 address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { | |
| 352 address entry = __ pc(); | |
| 353 __ push(state); | |
| 354 __ call_VM(noreg, runtime_entry); | |
| 355 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
| 356 return entry; | |
| 357 } | |
| 358 | |
| 359 | |
| 360 // Helpers for commoning out cases in the various type of method entries. | |
| 361 // | |
| 362 | |
| 363 // increment invocation count & check for overflow | |
| 364 // | |
| 365 // Note: checking for negative value instead of overflow | |
| 366 // so we have a 'sticky' overflow test | |
| 367 // | |
| 368 // rbx,: method | |
| 369 // rcx: invocation counter | |
| 370 // | |
| 371 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
| 1783 | 372 const Address invocation_counter(rbx, in_bytes(methodOopDesc::invocation_counter_offset()) + |
| 373 in_bytes(InvocationCounter::counter_offset())); | |
| 374 // Note: In tiered we increment either counters in methodOop or in MDO depending if we're profiling or not. | |
| 375 if (TieredCompilation) { | |
| 376 int increment = InvocationCounter::count_increment; | |
| 377 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
| 378 Label no_mdo, done; | |
| 379 if (ProfileInterpreter) { | |
| 380 // Are we profiling? | |
| 381 __ movptr(rax, Address(rbx, methodOopDesc::method_data_offset())); | |
| 382 __ testptr(rax, rax); | |
| 383 __ jccb(Assembler::zero, no_mdo); | |
| 384 // Increment counter in the MDO | |
| 385 const Address mdo_invocation_counter(rax, in_bytes(methodDataOopDesc::invocation_counter_offset()) + | |
| 386 in_bytes(InvocationCounter::counter_offset())); | |
| 387 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
| 388 __ jmpb(done); | |
| 389 } | |
| 390 __ bind(no_mdo); | |
| 391 // Increment counter in methodOop (we don't need to load it, it's in rcx). | |
| 392 __ increment_mask_and_jump(invocation_counter, increment, mask, rcx, true, Assembler::zero, overflow); | |
| 393 __ bind(done); | |
| 394 } else { | |
| 395 const Address backedge_counter (rbx, methodOopDesc::backedge_counter_offset() + | |
| 396 InvocationCounter::counter_offset()); | |
| 0 | 397 |
| 1783 | 398 if (ProfileInterpreter) { // %%% Merge this into methodDataOop |
| 399 __ incrementl(Address(rbx,methodOopDesc::interpreter_invocation_counter_offset())); | |
| 400 } | |
| 401 // Update standard invocation counters | |
| 402 __ movl(rax, backedge_counter); // load backedge counter | |
| 403 | |
| 404 __ incrementl(rcx, InvocationCounter::count_increment); | |
| 405 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits | |
| 406 | |
| 407 __ movl(invocation_counter, rcx); // save invocation count | |
| 408 __ addl(rcx, rax); // add both counters | |
| 0 | 409 |
| 1783 | 410 // profile_method is non-null only for interpreted method so |
| 411 // profile_method != NULL == !native_call | |
| 412 // BytecodeInterpreter only calls for native so code is elided. | |
| 413 | |
| 414 if (ProfileInterpreter && profile_method != NULL) { | |
| 415 // Test to see if we should create a method data oop | |
| 416 __ cmp32(rcx, | |
| 417 ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
| 418 __ jcc(Assembler::less, *profile_method_continue); | |
| 419 | |
| 420 // if no method data exists, go to profile_method | |
| 421 __ test_method_data_pointer(rax, *profile_method); | |
| 422 } | |
| 423 | |
| 0 | 424 __ cmp32(rcx, |
| 1783 | 425 ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); |
| 426 __ jcc(Assembler::aboveEqual, *overflow); | |
| 0 | 427 } |
| 428 } | |
| 429 | |
| 430 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
| 431 | |
| 432 // Asm interpreter on entry | |
| 433 // rdi - locals | |
| 434 // rsi - bcp | |
| 435 // rbx, - method | |
| 436 // rdx - cpool | |
| 437 // rbp, - interpreter frame | |
| 438 | |
| 439 // C++ interpreter on entry | |
| 440 // rsi - new interpreter state pointer | |
| 441 // rbp - interpreter frame pointer | |
| 442 // rbx - method | |
| 443 | |
| 444 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
| 445 // rbx, - method | |
| 446 // rcx - rcvr (assuming there is one) | |
| 447 // top of stack return address of interpreter caller | |
| 448 // rsp - sender_sp | |
| 449 | |
| 450 // C++ interpreter only | |
| 451 // rsi - previous interpreter state pointer | |
| 452 | |
| 453 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
| 454 | |
| 455 // InterpreterRuntime::frequency_counter_overflow takes one argument | |
| 456 // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). | |
| 457 // The call returns the address of the verified entry point for the method or NULL | |
| 458 // if the compilation did not complete (either went background or bailed out). | |
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459 __ movptr(rax, (intptr_t)false); |
| 0 | 460 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); |
| 461 | |
| 304 | 462 __ movptr(rbx, Address(rbp, method_offset)); // restore methodOop |
| 0 | 463 |
| 464 // Preserve invariant that rsi/rdi contain bcp/locals of sender frame | |
| 465 // and jump to the interpreted entry. | |
| 466 __ jmp(*do_continue, relocInfo::none); | |
| 467 | |
| 468 } | |
| 469 | |
| 470 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
| 471 // see if we've got enough room on the stack for locals plus overhead. | |
| 472 // the expression stack grows down incrementally, so the normal guard | |
| 473 // page mechanism will work for that. | |
| 474 // | |
| 475 // Registers live on entry: | |
| 476 // | |
| 477 // Asm interpreter | |
| 478 // rdx: number of additional locals this frame needs (what we must check) | |
| 479 // rbx,: methodOop | |
| 480 | |
| 481 // destroyed on exit | |
| 482 // rax, | |
| 483 | |
| 484 // NOTE: since the additional locals are also always pushed (wasn't obvious in | |
| 485 // generate_method_entry) so the guard should work for them too. | |
| 486 // | |
| 487 | |
| 488 // monitor entry size: see picture of stack set (generate_method_entry) and frame_x86.hpp | |
| 489 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 490 | |
| 491 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
| 492 // be sure to change this if you add/subtract anything to/from the overhead area | |
| 493 const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; | |
| 494 | |
| 495 const int page_size = os::vm_page_size(); | |
| 496 | |
| 497 Label after_frame_check; | |
| 498 | |
| 499 // see if the frame is greater than one page in size. If so, | |
| 500 // then we need to verify there is enough stack space remaining | |
| 501 // for the additional locals. | |
| 1506 | 502 __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize); |
| 0 | 503 __ jcc(Assembler::belowEqual, after_frame_check); |
| 504 | |
| 505 // compute rsp as if this were going to be the last frame on | |
| 506 // the stack before the red zone | |
| 507 | |
| 508 Label after_frame_check_pop; | |
| 509 | |
| 304 | 510 __ push(rsi); |
| 0 | 511 |
| 512 const Register thread = rsi; | |
| 513 | |
| 514 __ get_thread(thread); | |
| 515 | |
| 516 const Address stack_base(thread, Thread::stack_base_offset()); | |
| 517 const Address stack_size(thread, Thread::stack_size_offset()); | |
| 518 | |
| 519 // locals + overhead, in bytes | |
| 304 | 520 __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); |
| 0 | 521 |
| 522 #ifdef ASSERT | |
| 523 Label stack_base_okay, stack_size_okay; | |
| 524 // verify that thread stack base is non-zero | |
| 304 | 525 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
| 0 | 526 __ jcc(Assembler::notEqual, stack_base_okay); |
| 527 __ stop("stack base is zero"); | |
| 528 __ bind(stack_base_okay); | |
| 529 // verify that thread stack size is non-zero | |
| 304 | 530 __ cmpptr(stack_size, 0); |
| 0 | 531 __ jcc(Assembler::notEqual, stack_size_okay); |
| 532 __ stop("stack size is zero"); | |
| 533 __ bind(stack_size_okay); | |
| 534 #endif | |
| 535 | |
| 536 // Add stack base to locals and subtract stack size | |
| 304 | 537 __ addptr(rax, stack_base); |
| 538 __ subptr(rax, stack_size); | |
| 0 | 539 |
| 540 // Use the maximum number of pages we might bang. | |
| 541 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
| 542 (StackRedPages+StackYellowPages); | |
| 304 | 543 __ addptr(rax, max_pages * page_size); |
| 0 | 544 |
| 545 // check against the current stack bottom | |
| 304 | 546 __ cmpptr(rsp, rax); |
| 0 | 547 __ jcc(Assembler::above, after_frame_check_pop); |
| 548 | |
| 304 | 549 __ pop(rsi); // get saved bcp / (c++ prev state ). |
| 0 | 550 |
| 304 | 551 __ pop(rax); // get return address |
| 0 | 552 __ jump(ExternalAddress(Interpreter::throw_StackOverflowError_entry())); |
| 553 | |
| 554 // all done with frame size check | |
| 555 __ bind(after_frame_check_pop); | |
| 304 | 556 __ pop(rsi); |
| 0 | 557 |
| 558 __ bind(after_frame_check); | |
| 559 } | |
| 560 | |
| 561 // Allocate monitor and lock method (asm interpreter) | |
| 562 // rbx, - methodOop | |
| 563 // | |
| 564 void InterpreterGenerator::lock_method(void) { | |
| 565 // synchronize method | |
| 566 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
| 567 const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 568 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 569 | |
| 570 #ifdef ASSERT | |
| 571 { Label L; | |
| 572 __ movl(rax, access_flags); | |
| 573 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 574 __ jcc(Assembler::notZero, L); | |
| 575 __ stop("method doesn't need synchronization"); | |
| 576 __ bind(L); | |
| 577 } | |
| 578 #endif // ASSERT | |
| 579 // get synchronization object | |
| 580 { Label done; | |
| 581 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
| 582 __ movl(rax, access_flags); | |
| 583 __ testl(rax, JVM_ACC_STATIC); | |
| 304 | 584 __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) |
| 0 | 585 __ jcc(Assembler::zero, done); |
| 304 | 586 __ movptr(rax, Address(rbx, methodOopDesc::constants_offset())); |
| 587 __ movptr(rax, Address(rax, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
| 588 __ movptr(rax, Address(rax, mirror_offset)); | |
| 0 | 589 __ bind(done); |
| 590 } | |
| 591 // add space for monitor & lock | |
| 304 | 592 __ subptr(rsp, entry_size); // add space for a monitor entry |
| 593 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
| 594 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object | |
| 595 __ mov(rdx, rsp); // object address | |
| 0 | 596 __ lock_object(rdx); |
| 597 } | |
| 598 | |
| 599 // | |
| 600 // Generate a fixed interpreter frame. This is identical setup for interpreted methods | |
| 601 // and for native methods hence the shared code. | |
| 602 | |
| 603 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
| 604 // initialize fixed part of activation frame | |
| 304 | 605 __ push(rax); // save return address |
| 0 | 606 __ enter(); // save old & set new rbp, |
| 607 | |
| 608 | |
| 304 | 609 __ push(rsi); // set sender sp |
| 610 __ push((int32_t)NULL_WORD); // leave last_sp as null | |
| 611 __ movptr(rsi, Address(rbx,methodOopDesc::const_offset())); // get constMethodOop | |
| 612 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
| 613 __ push(rbx); // save methodOop | |
| 0 | 614 if (ProfileInterpreter) { |
| 615 Label method_data_continue; | |
| 304 | 616 __ movptr(rdx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 617 __ testptr(rdx, rdx); | |
| 0 | 618 __ jcc(Assembler::zero, method_data_continue); |
| 304 | 619 __ addptr(rdx, in_bytes(methodDataOopDesc::data_offset())); |
| 0 | 620 __ bind(method_data_continue); |
| 304 | 621 __ push(rdx); // set the mdp (method data pointer) |
| 0 | 622 } else { |
| 304 | 623 __ push(0); |
| 0 | 624 } |
| 625 | |
| 304 | 626 __ movptr(rdx, Address(rbx, methodOopDesc::constants_offset())); |
| 627 __ movptr(rdx, Address(rdx, constantPoolOopDesc::cache_offset_in_bytes())); | |
| 628 __ push(rdx); // set constant pool cache | |
| 629 __ push(rdi); // set locals pointer | |
| 0 | 630 if (native_call) { |
| 304 | 631 __ push(0); // no bcp |
| 0 | 632 } else { |
| 304 | 633 __ push(rsi); // set bcp |
| 0 | 634 } |
| 304 | 635 __ push(0); // reserve word for pointer to expression stack bottom |
| 636 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
| 0 | 637 } |
| 638 | |
| 639 // End of helpers | |
| 640 | |
| 641 // | |
| 642 // Various method entries | |
| 643 //------------------------------------------------------------------------------------------------------------------------ | |
| 644 // | |
| 645 // | |
| 646 | |
| 647 // Call an accessor method (assuming it is resolved, otherwise drop into vanilla (slow path) entry | |
| 648 | |
| 649 address InterpreterGenerator::generate_accessor_entry(void) { | |
| 650 | |
| 651 // rbx,: methodOop | |
| 652 // rcx: receiver (preserve for slow entry into asm interpreter) | |
| 653 | |
| 654 // rsi: senderSP must preserved for slow path, set SP to it on fast path | |
| 655 | |
| 656 address entry_point = __ pc(); | |
| 657 Label xreturn_path; | |
| 658 | |
| 659 // do fastpath for resolved accessor methods | |
| 660 if (UseFastAccessorMethods) { | |
| 661 Label slow_path; | |
| 662 // If we need a safepoint check, generate full interpreter entry. | |
| 663 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
| 664 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 665 SafepointSynchronize::_not_synchronized); | |
| 666 | |
| 667 __ jcc(Assembler::notEqual, slow_path); | |
| 668 // ASM/C++ Interpreter | |
| 669 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; parameter size = 1 | |
| 670 // Note: We can only use this code if the getfield has been resolved | |
| 671 // and if we don't have a null-pointer exception => check for | |
| 672 // these conditions first and use slow path if necessary. | |
| 673 // rbx,: method | |
| 674 // rcx: receiver | |
| 304 | 675 __ movptr(rax, Address(rsp, wordSize)); |
| 0 | 676 |
| 677 // check if local 0 != NULL and read field | |
| 304 | 678 __ testptr(rax, rax); |
| 0 | 679 __ jcc(Assembler::zero, slow_path); |
| 680 | |
| 304 | 681 __ movptr(rdi, Address(rbx, methodOopDesc::constants_offset())); |
| 0 | 682 // read first instruction word and extract bytecode @ 1 and index @ 2 |
| 304 | 683 __ movptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
| 0 | 684 __ movl(rdx, Address(rdx, constMethodOopDesc::codes_offset())); |
| 685 // Shift codes right to get the index on the right. | |
| 686 // The bytecode fetched looks like <index><0xb4><0x2a> | |
| 687 __ shrl(rdx, 2*BitsPerByte); | |
| 688 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
| 304 | 689 __ movptr(rdi, Address(rdi, constantPoolOopDesc::cache_offset_in_bytes())); |
| 0 | 690 |
| 691 // rax,: local 0 | |
| 692 // rbx,: method | |
| 693 // rcx: receiver - do not destroy since it is needed for slow path! | |
| 694 // rcx: scratch | |
| 695 // rdx: constant pool cache index | |
| 696 // rdi: constant pool cache | |
| 697 // rsi: sender sp | |
| 698 | |
| 699 // check if getfield has been resolved and read constant pool cache entry | |
| 700 // check the validity of the cache entry by testing whether _indices field | |
| 701 // contains Bytecode::_getfield in b1 byte. | |
| 702 assert(in_words(ConstantPoolCacheEntry::size()) == 4, "adjust shift below"); | |
| 703 __ movl(rcx, | |
| 704 Address(rdi, | |
| 705 rdx, | |
| 304 | 706 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
| 0 | 707 __ shrl(rcx, 2*BitsPerByte); |
| 708 __ andl(rcx, 0xFF); | |
| 709 __ cmpl(rcx, Bytecodes::_getfield); | |
| 710 __ jcc(Assembler::notEqual, slow_path); | |
| 711 | |
| 712 // Note: constant pool entry is not valid before bytecode is resolved | |
| 304 | 713 __ movptr(rcx, |
| 714 Address(rdi, | |
| 715 rdx, | |
| 716 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::f2_offset())); | |
| 0 | 717 __ movl(rdx, |
| 718 Address(rdi, | |
| 719 rdx, | |
| 304 | 720 Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
| 0 | 721 |
| 722 Label notByte, notShort, notChar; | |
| 723 const Address field_address (rax, rcx, Address::times_1); | |
| 724 | |
| 725 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
| 726 // because they are different sizes. | |
| 727 // Use the type from the constant pool cache | |
| 728 __ shrl(rdx, ConstantPoolCacheEntry::tosBits); | |
| 729 // Make sure we don't need to mask rdx for tosBits after the above shift | |
| 730 ConstantPoolCacheEntry::verify_tosBits(); | |
| 731 __ cmpl(rdx, btos); | |
| 732 __ jcc(Assembler::notEqual, notByte); | |
| 733 __ load_signed_byte(rax, field_address); | |
| 734 __ jmp(xreturn_path); | |
| 735 | |
| 736 __ bind(notByte); | |
| 737 __ cmpl(rdx, stos); | |
| 738 __ jcc(Assembler::notEqual, notShort); | |
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739 __ load_signed_short(rax, field_address); |
| 0 | 740 __ jmp(xreturn_path); |
| 741 | |
| 742 __ bind(notShort); | |
| 743 __ cmpl(rdx, ctos); | |
| 744 __ jcc(Assembler::notEqual, notChar); | |
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745 __ load_unsigned_short(rax, field_address); |
| 0 | 746 __ jmp(xreturn_path); |
| 747 | |
| 748 __ bind(notChar); | |
| 749 #ifdef ASSERT | |
| 750 Label okay; | |
| 751 __ cmpl(rdx, atos); | |
| 752 __ jcc(Assembler::equal, okay); | |
| 753 __ cmpl(rdx, itos); | |
| 754 __ jcc(Assembler::equal, okay); | |
| 755 __ stop("what type is this?"); | |
| 756 __ bind(okay); | |
| 757 #endif // ASSERT | |
| 758 // All the rest are a 32 bit wordsize | |
| 304 | 759 // This is ok for now. Since fast accessors should be going away |
| 760 __ movptr(rax, field_address); | |
| 0 | 761 |
| 762 __ bind(xreturn_path); | |
| 763 | |
| 764 // _ireturn/_areturn | |
| 304 | 765 __ pop(rdi); // get return address |
| 766 __ mov(rsp, rsi); // set sp to sender sp | |
| 0 | 767 __ jmp(rdi); |
| 768 | |
| 769 // generate a vanilla interpreter entry as the slow path | |
| 770 __ bind(slow_path); | |
| 771 | |
| 772 (void) generate_normal_entry(false); | |
| 773 return entry_point; | |
| 774 } | |
| 775 return NULL; | |
| 776 | |
| 777 } | |
| 778 | |
| 779 // | |
| 780 // Interpreter stub for calling a native method. (asm interpreter) | |
| 781 // This sets up a somewhat different looking stack for calling the native method | |
| 782 // than the typical interpreter frame setup. | |
| 783 // | |
| 784 | |
| 785 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
| 786 // determine code generation flags | |
| 787 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 788 | |
| 789 // rbx,: methodOop | |
| 790 // rsi: sender sp | |
| 791 // rsi: previous interpreter state (C++ interpreter) must preserve | |
| 792 address entry_point = __ pc(); | |
| 793 | |
| 794 | |
| 795 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
| 796 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
| 797 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
| 798 | |
| 799 // get parameter size (always needed) | |
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800 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 801 |
| 802 // native calls don't need the stack size check since they have no expression stack | |
| 803 // and the arguments are already on the stack and we only add a handful of words | |
| 804 // to the stack | |
| 805 | |
| 806 // rbx,: methodOop | |
| 807 // rcx: size of parameters | |
| 808 // rsi: sender sp | |
| 809 | |
| 304 | 810 __ pop(rax); // get return address |
| 0 | 811 // for natives the size of locals is zero |
| 812 | |
| 813 // compute beginning of parameters (rdi) | |
| 304 | 814 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
| 0 | 815 |
| 816 | |
| 817 // add 2 zero-initialized slots for native calls | |
| 818 // NULL result handler | |
| 304 | 819 __ push((int32_t)NULL_WORD); |
| 0 | 820 // NULL oop temp (mirror or jni oop result) |
| 304 | 821 __ push((int32_t)NULL_WORD); |
| 0 | 822 |
| 823 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
| 824 // initialize fixed part of activation frame | |
| 825 | |
| 826 generate_fixed_frame(true); | |
| 827 | |
| 828 // make sure method is native & not abstract | |
| 829 #ifdef ASSERT | |
| 830 __ movl(rax, access_flags); | |
| 831 { | |
| 832 Label L; | |
| 833 __ testl(rax, JVM_ACC_NATIVE); | |
| 834 __ jcc(Assembler::notZero, L); | |
| 835 __ stop("tried to execute non-native method as native"); | |
| 836 __ bind(L); | |
| 837 } | |
| 838 { Label L; | |
| 839 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 840 __ jcc(Assembler::zero, L); | |
| 841 __ stop("tried to execute abstract method in interpreter"); | |
| 842 __ bind(L); | |
| 843 } | |
| 844 #endif | |
| 845 | |
| 846 // Since at this point in the method invocation the exception handler | |
| 847 // would try to exit the monitor of synchronized methods which hasn't | |
| 848 // been entered yet, we set the thread local variable | |
| 849 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 850 // check this flag. | |
| 851 | |
| 852 __ get_thread(rax); | |
| 853 const Address do_not_unlock_if_synchronized(rax, | |
| 854 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 855 __ movbool(do_not_unlock_if_synchronized, true); | |
| 856 | |
| 857 // increment invocation count & check for overflow | |
| 858 Label invocation_counter_overflow; | |
| 859 if (inc_counter) { | |
| 860 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
| 861 } | |
| 862 | |
| 863 Label continue_after_compile; | |
| 864 __ bind(continue_after_compile); | |
| 865 | |
| 866 bang_stack_shadow_pages(true); | |
| 867 | |
| 868 // reset the _do_not_unlock_if_synchronized flag | |
| 869 __ get_thread(rax); | |
| 870 __ movbool(do_not_unlock_if_synchronized, false); | |
| 871 | |
| 872 // check for synchronized methods | |
| 873 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 874 // so method is not locked if overflows. | |
| 875 // | |
| 876 if (synchronized) { | |
| 877 lock_method(); | |
| 878 } else { | |
| 879 // no synchronization necessary | |
| 880 #ifdef ASSERT | |
| 881 { Label L; | |
| 882 __ movl(rax, access_flags); | |
| 883 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 884 __ jcc(Assembler::zero, L); | |
| 885 __ stop("method needs synchronization"); | |
| 886 __ bind(L); | |
| 887 } | |
| 888 #endif | |
| 889 } | |
| 890 | |
| 891 // start execution | |
| 892 #ifdef ASSERT | |
| 893 { Label L; | |
| 894 const Address monitor_block_top (rbp, | |
| 895 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 896 __ movptr(rax, monitor_block_top); |
| 897 __ cmpptr(rax, rsp); | |
| 0 | 898 __ jcc(Assembler::equal, L); |
| 899 __ stop("broken stack frame setup in interpreter"); | |
| 900 __ bind(L); | |
| 901 } | |
| 902 #endif | |
| 903 | |
| 904 // jvmti/dtrace support | |
| 905 __ notify_method_entry(); | |
| 906 | |
| 907 // work registers | |
| 908 const Register method = rbx; | |
| 909 const Register thread = rdi; | |
| 910 const Register t = rcx; | |
| 911 | |
| 912 // allocate space for parameters | |
| 913 __ get_method(method); | |
| 914 __ verify_oop(method); | |
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915 __ load_unsigned_short(t, Address(method, methodOopDesc::size_of_parameters_offset())); |
| 1506 | 916 __ shlptr(t, Interpreter::logStackElementSize); |
| 304 | 917 __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror |
| 918 __ subptr(rsp, t); | |
| 919 __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics | |
| 0 | 920 |
| 921 // get signature handler | |
| 922 { Label L; | |
| 304 | 923 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
| 924 __ testptr(t, t); | |
| 0 | 925 __ jcc(Assembler::notZero, L); |
| 926 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
| 927 __ get_method(method); | |
| 304 | 928 __ movptr(t, Address(method, methodOopDesc::signature_handler_offset())); |
| 0 | 929 __ bind(L); |
| 930 } | |
| 931 | |
| 932 // call signature handler | |
| 933 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); | |
| 934 assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); | |
| 935 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); | |
| 936 // The generated handlers do not touch RBX (the method oop). | |
| 937 // However, large signatures cannot be cached and are generated | |
| 938 // each time here. The slow-path generator will blow RBX | |
| 939 // sometime, so we must reload it after the call. | |
| 940 __ call(t); | |
| 941 __ get_method(method); // slow path call blows RBX on DevStudio 5.0 | |
| 942 | |
| 943 // result handler is in rax, | |
| 944 // set result handler | |
| 304 | 945 __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); |
| 0 | 946 |
| 947 // pass mirror handle if static call | |
| 948 { Label L; | |
| 949 const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes(); | |
| 950 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
| 951 __ testl(t, JVM_ACC_STATIC); | |
| 952 __ jcc(Assembler::zero, L); | |
| 953 // get mirror | |
| 304 | 954 __ movptr(t, Address(method, methodOopDesc:: constants_offset())); |
| 955 __ movptr(t, Address(t, constantPoolOopDesc::pool_holder_offset_in_bytes())); | |
| 956 __ movptr(t, Address(t, mirror_offset)); | |
| 0 | 957 // copy mirror into activation frame |
| 304 | 958 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); |
| 0 | 959 // pass handle to mirror |
| 304 | 960 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); |
| 961 __ movptr(Address(rsp, wordSize), t); | |
| 0 | 962 __ bind(L); |
| 963 } | |
| 964 | |
| 965 // get native function entry point | |
| 966 { Label L; | |
| 304 | 967 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
| 0 | 968 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
| 304 | 969 __ cmpptr(rax, unsatisfied.addr()); |
| 0 | 970 __ jcc(Assembler::notEqual, L); |
| 971 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
| 972 __ get_method(method); | |
| 973 __ verify_oop(method); | |
| 304 | 974 __ movptr(rax, Address(method, methodOopDesc::native_function_offset())); |
| 0 | 975 __ bind(L); |
| 976 } | |
| 977 | |
| 978 // pass JNIEnv | |
| 979 __ get_thread(thread); | |
| 304 | 980 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); |
| 981 __ movptr(Address(rsp, 0), t); | |
| 0 | 982 |
| 983 // set_last_Java_frame_before_call | |
| 984 // It is enough that the pc() | |
| 985 // points into the right code segment. It does not have to be the correct return pc. | |
| 986 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); | |
| 987 | |
| 988 // change thread state | |
| 989 #ifdef ASSERT | |
| 990 { Label L; | |
| 991 __ movl(t, Address(thread, JavaThread::thread_state_offset())); | |
| 992 __ cmpl(t, _thread_in_Java); | |
| 993 __ jcc(Assembler::equal, L); | |
| 994 __ stop("Wrong thread state in native stub"); | |
| 995 __ bind(L); | |
| 996 } | |
| 997 #endif | |
| 998 | |
| 999 // Change state to native | |
| 1000 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
| 1001 __ call(rax); | |
| 1002 | |
| 1003 // result potentially in rdx:rax or ST0 | |
| 1004 | |
| 1005 // Either restore the MXCSR register after returning from the JNI Call | |
| 1006 // or verify that it wasn't changed. | |
| 1007 if (VM_Version::supports_sse()) { | |
| 1008 if (RestoreMXCSROnJNICalls) { | |
| 1009 __ ldmxcsr(ExternalAddress(StubRoutines::addr_mxcsr_std())); | |
| 1010 } | |
| 1011 else if (CheckJNICalls ) { | |
| 304 | 1012 __ call(RuntimeAddress(StubRoutines::x86::verify_mxcsr_entry())); |
| 0 | 1013 } |
| 1014 } | |
| 1015 | |
| 1016 // Either restore the x87 floating pointer control word after returning | |
| 1017 // from the JNI call or verify that it wasn't changed. | |
| 1018 if (CheckJNICalls) { | |
| 304 | 1019 __ call(RuntimeAddress(StubRoutines::x86::verify_fpu_cntrl_wrd_entry())); |
| 0 | 1020 } |
| 1021 | |
| 1022 // save potential result in ST(0) & rdx:rax | |
| 1023 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - | |
| 1024 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) | |
| 1025 // It is safe to do this push because state is _thread_in_native and return address will be found | |
| 1026 // via _last_native_pc and not via _last_jave_sp | |
| 1027 | |
| 1028 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. | |
| 1029 // If the order changes or anything else is added to the stack the code in | |
| 1030 // interpreter_frame_result will have to be changed. | |
| 1031 | |
| 1032 { Label L; | |
| 1033 Label push_double; | |
| 1034 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); | |
| 1035 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); | |
| 1036 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
| 1037 float_handler.addr()); | |
| 1038 __ jcc(Assembler::equal, push_double); | |
| 1039 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
| 1040 double_handler.addr()); | |
| 1041 __ jcc(Assembler::notEqual, L); | |
| 1042 __ bind(push_double); | |
| 1043 __ push(dtos); | |
| 1044 __ bind(L); | |
| 1045 } | |
| 1046 __ push(ltos); | |
| 1047 | |
| 1048 // change thread state | |
| 1049 __ get_thread(thread); | |
| 1050 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
| 1051 if(os::is_MP()) { | |
| 1052 if (UseMembar) { | |
| 304 | 1053 // Force this write out before the read below |
| 1054 __ membar(Assembler::Membar_mask_bits( | |
| 1055 Assembler::LoadLoad | Assembler::LoadStore | | |
| 1056 Assembler::StoreLoad | Assembler::StoreStore)); | |
| 0 | 1057 } else { |
| 1058 // Write serialization page so VM thread can do a pseudo remote membar. | |
| 1059 // We use the current thread pointer to calculate a thread specific | |
| 1060 // offset to write to within the page. This minimizes bus traffic | |
| 1061 // due to cache line collision. | |
| 1062 __ serialize_memory(thread, rcx); | |
| 1063 } | |
| 1064 } | |
| 1065 | |
| 1066 if (AlwaysRestoreFPU) { | |
| 1067 // Make sure the control word is correct. | |
| 1068 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
| 1069 } | |
| 1070 | |
| 1071 // check for safepoint operation in progress and/or pending suspend requests | |
| 1072 { Label Continue; | |
| 1073 | |
| 1074 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 1075 SafepointSynchronize::_not_synchronized); | |
| 1076 | |
| 1077 Label L; | |
| 1078 __ jcc(Assembler::notEqual, L); | |
| 1079 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
| 1080 __ jcc(Assembler::equal, Continue); | |
| 1081 __ bind(L); | |
| 1082 | |
| 1083 // Don't use call_VM as it will see a possible pending exception and forward it | |
| 1084 // and never return here preventing us from clearing _last_native_pc down below. | |
| 1085 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
| 1086 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
| 1087 // by hand. | |
| 1088 // | |
| 304 | 1089 __ push(thread); |
| 0 | 1090 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
| 1091 JavaThread::check_special_condition_for_native_trans))); | |
| 1092 __ increment(rsp, wordSize); | |
| 1093 __ get_thread(thread); | |
| 1094 | |
| 1095 __ bind(Continue); | |
| 1096 } | |
| 1097 | |
| 1098 // change thread state | |
| 1099 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
| 1100 | |
| 1101 __ reset_last_Java_frame(thread, true, true); | |
| 1102 | |
| 1103 // reset handle block | |
| 304 | 1104 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); |
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1105 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
| 0 | 1106 |
| 1107 // If result was an oop then unbox and save it in the frame | |
| 1108 { Label L; | |
| 1109 Label no_oop, store_result; | |
| 1110 ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); | |
| 1111 __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), | |
| 1112 handler.addr()); | |
| 1113 __ jcc(Assembler::notEqual, no_oop); | |
| 304 | 1114 __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); |
| 0 | 1115 __ pop(ltos); |
| 304 | 1116 __ testptr(rax, rax); |
| 0 | 1117 __ jcc(Assembler::zero, store_result); |
| 1118 // unbox | |
| 304 | 1119 __ movptr(rax, Address(rax, 0)); |
| 0 | 1120 __ bind(store_result); |
| 304 | 1121 __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); |
| 0 | 1122 // keep stack depth as expected by pushing oop which will eventually be discarded |
| 1123 __ push(ltos); | |
| 1124 __ bind(no_oop); | |
| 1125 } | |
| 1126 | |
| 1127 { | |
| 1128 Label no_reguard; | |
| 1129 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
| 1130 __ jcc(Assembler::notEqual, no_reguard); | |
| 1131 | |
| 304 | 1132 __ pusha(); |
| 0 | 1133 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
| 304 | 1134 __ popa(); |
| 0 | 1135 |
| 1136 __ bind(no_reguard); | |
| 1137 } | |
| 1138 | |
| 1139 // restore rsi to have legal interpreter frame, | |
| 1140 // i.e., bci == 0 <=> rsi == code_base() | |
| 1141 // Can't call_VM until bcp is within reasonable. | |
| 1142 __ get_method(method); // method is junk from thread_in_native to now. | |
| 1143 __ verify_oop(method); | |
| 304 | 1144 __ movptr(rsi, Address(method,methodOopDesc::const_offset())); // get constMethodOop |
| 1145 __ lea(rsi, Address(rsi,constMethodOopDesc::codes_offset())); // get codebase | |
| 0 | 1146 |
| 1147 // handle exceptions (exception handling will handle unlocking!) | |
| 1148 { Label L; | |
| 304 | 1149 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 1150 __ jcc(Assembler::zero, L); |
| 1151 // Note: At some point we may want to unify this with the code used in call_VM_base(); | |
| 1152 // i.e., we should use the StubRoutines::forward_exception code. For now this | |
| 1153 // doesn't work here because the rsp is not correctly set at this point. | |
| 1154 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
| 1155 __ should_not_reach_here(); | |
| 1156 __ bind(L); | |
| 1157 } | |
| 1158 | |
| 1159 // do unlocking if necessary | |
| 1160 { Label L; | |
| 1161 __ movl(t, Address(method, methodOopDesc::access_flags_offset())); | |
| 1162 __ testl(t, JVM_ACC_SYNCHRONIZED); | |
| 1163 __ jcc(Assembler::zero, L); | |
| 1164 // the code below should be shared with interpreter macro assembler implementation | |
| 1165 { Label unlock; | |
| 1166 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 1167 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 1168 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
| 1169 | |
| 304 | 1170 __ lea(rdx, monitor); // address of first monitor |
| 0 | 1171 |
| 304 | 1172 __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
| 1173 __ testptr(t, t); | |
| 0 | 1174 __ jcc(Assembler::notZero, unlock); |
| 1175 | |
| 1176 // Entry already unlocked, need to throw exception | |
| 1177 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 1178 __ should_not_reach_here(); | |
| 1179 | |
| 1180 __ bind(unlock); | |
| 1181 __ unlock_object(rdx); | |
| 1182 } | |
| 1183 __ bind(L); | |
| 1184 } | |
| 1185 | |
| 1186 // jvmti/dtrace support | |
| 1187 // Note: This must happen _after_ handling/throwing any exceptions since | |
| 1188 // the exception handler code notifies the runtime of method exits | |
| 1189 // too. If this happens before, method entry/exit notifications are | |
| 1190 // not properly paired (was bug - gri 11/22/99). | |
| 1191 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
| 1192 | |
| 1193 // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result | |
| 1194 __ pop(ltos); | |
| 304 | 1195 __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
| 0 | 1196 __ call(t); |
| 1197 | |
| 1198 // remove activation | |
| 304 | 1199 __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 1200 __ leave(); // remove frame anchor |
| 304 | 1201 __ pop(rdi); // get return address |
| 1202 __ mov(rsp, t); // set sp to sender sp | |
| 0 | 1203 __ jmp(rdi); |
| 1204 | |
| 1205 if (inc_counter) { | |
| 1206 // Handle overflow of counter and compile method | |
| 1207 __ bind(invocation_counter_overflow); | |
| 1208 generate_counter_overflow(&continue_after_compile); | |
| 1209 } | |
| 1210 | |
| 1211 return entry_point; | |
| 1212 } | |
| 1213 | |
| 1214 // | |
| 1215 // Generic interpreted method entry to (asm) interpreter | |
| 1216 // | |
| 1217 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
| 1218 // determine code generation flags | |
| 1219 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 1220 | |
| 1221 // rbx,: methodOop | |
| 1222 // rsi: sender sp | |
| 1223 address entry_point = __ pc(); | |
| 1224 | |
| 1225 | |
| 1226 const Address size_of_parameters(rbx, methodOopDesc::size_of_parameters_offset()); | |
| 1227 const Address size_of_locals (rbx, methodOopDesc::size_of_locals_offset()); | |
| 1228 const Address invocation_counter(rbx, methodOopDesc::invocation_counter_offset() + InvocationCounter::counter_offset()); | |
| 1229 const Address access_flags (rbx, methodOopDesc::access_flags_offset()); | |
| 1230 | |
| 1231 // get parameter size (always needed) | |
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1232 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 1233 |
| 1234 // rbx,: methodOop | |
| 1235 // rcx: size of parameters | |
| 1236 | |
| 1237 // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
| 1238 | |
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1239 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
| 0 | 1240 __ subl(rdx, rcx); // rdx = no. of additional locals |
| 1241 | |
| 1242 // see if we've got enough room on the stack for locals plus overhead. | |
| 1243 generate_stack_overflow_check(); | |
| 1244 | |
| 1245 // get return address | |
| 304 | 1246 __ pop(rax); |
| 0 | 1247 |
| 1248 // compute beginning of parameters (rdi) | |
| 304 | 1249 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
| 0 | 1250 |
| 1251 // rdx - # of additional locals | |
| 1252 // allocate space for locals | |
| 1253 // explicitly initialize locals | |
| 1254 { | |
| 1255 Label exit, loop; | |
| 1256 __ testl(rdx, rdx); | |
| 1257 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
| 1258 __ bind(loop); | |
| 304 | 1259 __ push((int32_t)NULL_WORD); // initialize local variables |
| 0 | 1260 __ decrement(rdx); // until everything initialized |
| 1261 __ jcc(Assembler::greater, loop); | |
| 1262 __ bind(exit); | |
| 1263 } | |
| 1264 | |
| 1265 if (inc_counter) __ movl(rcx, invocation_counter); // (pre-)fetch invocation count | |
| 1266 // initialize fixed part of activation frame | |
| 1267 generate_fixed_frame(false); | |
| 1268 | |
| 1269 // make sure method is not native & not abstract | |
| 1270 #ifdef ASSERT | |
| 1271 __ movl(rax, access_flags); | |
| 1272 { | |
| 1273 Label L; | |
| 1274 __ testl(rax, JVM_ACC_NATIVE); | |
| 1275 __ jcc(Assembler::zero, L); | |
| 1276 __ stop("tried to execute native method as non-native"); | |
| 1277 __ bind(L); | |
| 1278 } | |
| 1279 { Label L; | |
| 1280 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 1281 __ jcc(Assembler::zero, L); | |
| 1282 __ stop("tried to execute abstract method in interpreter"); | |
| 1283 __ bind(L); | |
| 1284 } | |
| 1285 #endif | |
| 1286 | |
| 1287 // Since at this point in the method invocation the exception handler | |
| 1288 // would try to exit the monitor of synchronized methods which hasn't | |
| 1289 // been entered yet, we set the thread local variable | |
| 1290 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 1291 // check this flag. | |
| 1292 | |
| 1293 __ get_thread(rax); | |
| 1294 const Address do_not_unlock_if_synchronized(rax, | |
| 1295 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 1296 __ movbool(do_not_unlock_if_synchronized, true); | |
| 1297 | |
| 1298 // increment invocation count & check for overflow | |
| 1299 Label invocation_counter_overflow; | |
| 1300 Label profile_method; | |
| 1301 Label profile_method_continue; | |
| 1302 if (inc_counter) { | |
| 1303 generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); | |
| 1304 if (ProfileInterpreter) { | |
| 1305 __ bind(profile_method_continue); | |
| 1306 } | |
| 1307 } | |
| 1308 Label continue_after_compile; | |
| 1309 __ bind(continue_after_compile); | |
| 1310 | |
| 1311 bang_stack_shadow_pages(false); | |
| 1312 | |
| 1313 // reset the _do_not_unlock_if_synchronized flag | |
| 1314 __ get_thread(rax); | |
| 1315 __ movbool(do_not_unlock_if_synchronized, false); | |
| 1316 | |
| 1317 // check for synchronized methods | |
| 1318 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 1319 // so method is not locked if overflows. | |
| 1320 // | |
| 1321 if (synchronized) { | |
| 1322 // Allocate monitor and lock method | |
| 1323 lock_method(); | |
| 1324 } else { | |
| 1325 // no synchronization necessary | |
| 1326 #ifdef ASSERT | |
| 1327 { Label L; | |
| 1328 __ movl(rax, access_flags); | |
| 1329 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 1330 __ jcc(Assembler::zero, L); | |
| 1331 __ stop("method needs synchronization"); | |
| 1332 __ bind(L); | |
| 1333 } | |
| 1334 #endif | |
| 1335 } | |
| 1336 | |
| 1337 // start execution | |
| 1338 #ifdef ASSERT | |
| 1339 { Label L; | |
| 1340 const Address monitor_block_top (rbp, | |
| 1341 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 1342 __ movptr(rax, monitor_block_top); |
| 1343 __ cmpptr(rax, rsp); | |
| 0 | 1344 __ jcc(Assembler::equal, L); |
| 1345 __ stop("broken stack frame setup in interpreter"); | |
| 1346 __ bind(L); | |
| 1347 } | |
| 1348 #endif | |
| 1349 | |
| 1350 // jvmti support | |
| 1351 __ notify_method_entry(); | |
| 1352 | |
| 1353 __ dispatch_next(vtos); | |
| 1354 | |
| 1355 // invocation counter overflow | |
| 1356 if (inc_counter) { | |
| 1357 if (ProfileInterpreter) { | |
| 1358 // We have decided to profile this method in the interpreter | |
| 1359 __ bind(profile_method); | |
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1360 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1361 __ set_method_data_pointer_for_bcp(); |
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1362 __ get_method(rbx); |
| 0 | 1363 __ jmp(profile_method_continue); |
| 1364 } | |
| 1365 // Handle overflow of counter and compile method | |
| 1366 __ bind(invocation_counter_overflow); | |
| 1367 generate_counter_overflow(&continue_after_compile); | |
| 1368 } | |
| 1369 | |
| 1370 return entry_point; | |
| 1371 } | |
| 1372 | |
| 1373 //------------------------------------------------------------------------------------------------------------------------ | |
| 1374 // Entry points | |
| 1375 // | |
| 1376 // Here we generate the various kind of entries into the interpreter. | |
| 1377 // The two main entry type are generic bytecode methods and native call method. | |
| 1378 // These both come in synchronized and non-synchronized versions but the | |
| 1379 // frame layout they create is very similar. The other method entry | |
| 1380 // types are really just special purpose entries that are really entry | |
| 1381 // and interpretation all in one. These are for trivial methods like | |
| 1382 // accessor, empty, or special math methods. | |
| 1383 // | |
| 1384 // When control flow reaches any of the entry types for the interpreter | |
| 1385 // the following holds -> | |
| 1386 // | |
| 1387 // Arguments: | |
| 1388 // | |
| 1389 // rbx,: methodOop | |
| 1390 // rcx: receiver | |
| 1391 // | |
| 1392 // | |
| 1393 // Stack layout immediately at entry | |
| 1394 // | |
| 1395 // [ return address ] <--- rsp | |
| 1396 // [ parameter n ] | |
| 1397 // ... | |
| 1398 // [ parameter 1 ] | |
| 1399 // [ expression stack ] (caller's java expression stack) | |
| 1400 | |
| 1401 // Assuming that we don't go to one of the trivial specialized | |
| 1402 // entries the stack will look like below when we are ready to execute | |
| 1403 // the first bytecode (or call the native routine). The register usage | |
| 1404 // will be as the template based interpreter expects (see interpreter_x86.hpp). | |
| 1405 // | |
| 1406 // local variables follow incoming parameters immediately; i.e. | |
| 1407 // the return address is moved to the end of the locals). | |
| 1408 // | |
| 1409 // [ monitor entry ] <--- rsp | |
| 1410 // ... | |
| 1411 // [ monitor entry ] | |
| 1412 // [ expr. stack bottom ] | |
| 1413 // [ saved rsi ] | |
| 1414 // [ current rdi ] | |
| 1415 // [ methodOop ] | |
| 1416 // [ saved rbp, ] <--- rbp, | |
| 1417 // [ return address ] | |
| 1418 // [ local variable m ] | |
| 1419 // ... | |
| 1420 // [ local variable 1 ] | |
| 1421 // [ parameter n ] | |
| 1422 // ... | |
| 1423 // [ parameter 1 ] <--- rdi | |
| 1424 | |
| 1425 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { | |
| 1426 // determine code generation flags | |
| 1427 bool synchronized = false; | |
| 1428 address entry_point = NULL; | |
| 1429 | |
| 1430 switch (kind) { | |
| 1431 case Interpreter::zerolocals : break; | |
| 1432 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
| 1433 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; | |
| 1434 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; | |
| 1435 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; | |
| 1436 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; | |
| 1437 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; | |
| 710 | 1438 case Interpreter::method_handle : entry_point = ((InterpreterGenerator*)this)->generate_method_handle_entry(); break; |
| 0 | 1439 |
| 1440 case Interpreter::java_lang_math_sin : // fall thru | |
| 1441 case Interpreter::java_lang_math_cos : // fall thru | |
| 1442 case Interpreter::java_lang_math_tan : // fall thru | |
| 1443 case Interpreter::java_lang_math_abs : // fall thru | |
| 1444 case Interpreter::java_lang_math_log : // fall thru | |
| 1445 case Interpreter::java_lang_math_log10 : // fall thru | |
| 1446 case Interpreter::java_lang_math_sqrt : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; | |
| 1447 default : ShouldNotReachHere(); break; | |
| 1448 } | |
| 1449 | |
| 1450 if (entry_point) return entry_point; | |
| 1451 | |
| 1452 return ((InterpreterGenerator*)this)->generate_normal_entry(synchronized); | |
| 1453 | |
| 1454 } | |
| 1455 | |
|
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1456 // These should never be compiled since the interpreter will prefer |
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1457 // the compiled version to the intrinsic version. |
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1458 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1459 switch (method_kind(m)) { |
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1460 case Interpreter::java_lang_math_sin : // fall thru |
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1461 case Interpreter::java_lang_math_cos : // fall thru |
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1462 case Interpreter::java_lang_math_tan : // fall thru |
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1463 case Interpreter::java_lang_math_abs : // fall thru |
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1464 case Interpreter::java_lang_math_log : // fall thru |
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1465 case Interpreter::java_lang_math_log10 : // fall thru |
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1466 case Interpreter::java_lang_math_sqrt : |
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1467 return false; |
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1468 default: |
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1469 return true; |
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1470 } |
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1471 } |
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1472 |
| 0 | 1473 // How much stack a method activation needs in words. |
| 1474 int AbstractInterpreter::size_top_interpreter_activation(methodOop method) { | |
| 1475 | |
| 1476 const int stub_code = 4; // see generate_call_stub | |
| 1477 // Save space for one monitor to get into the interpreted method in case | |
| 1478 // the method is synchronized | |
| 1479 int monitor_size = method->is_synchronized() ? | |
| 1480 1*frame::interpreter_frame_monitor_size() : 0; | |
| 1481 | |
| 1482 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
| 1483 // be sure to change this if you add/subtract anything to/from the overhead area | |
| 1484 const int overhead_size = -frame::interpreter_frame_initial_sp_offset; | |
| 1485 | |
| 710 | 1486 const int extra_stack = methodOopDesc::extra_stack_entries(); |
| 1487 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * | |
| 1506 | 1488 Interpreter::stackElementWords; |
| 0 | 1489 return overhead_size + method_stack + stub_code; |
| 1490 } | |
| 1491 | |
| 1492 // asm based interpreter deoptimization helpers | |
| 1493 | |
| 1494 int AbstractInterpreter::layout_activation(methodOop method, | |
| 1495 int tempcount, | |
| 1496 int popframe_extra_args, | |
| 1497 int moncount, | |
| 1498 int callee_param_count, | |
| 1499 int callee_locals, | |
| 1500 frame* caller, | |
| 1501 frame* interpreter_frame, | |
| 1502 bool is_top_frame) { | |
| 1503 // Note: This calculation must exactly parallel the frame setup | |
| 1504 // in AbstractInterpreterGenerator::generate_method_entry. | |
| 1505 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
| 1506 // The frame interpreter_frame, if not NULL, is guaranteed to be the right size, | |
| 1507 // as determined by a previous call to this method. | |
| 1508 // It is also guaranteed to be walkable even though it is in a skeletal state | |
| 1509 // NOTE: return size is in words not bytes | |
| 1510 | |
| 1511 // fixed size of an interpreter frame: | |
| 1506 | 1512 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
| 0 | 1513 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
| 1506 | 1514 Interpreter::stackElementWords; |
| 0 | 1515 |
| 1516 int overhead = frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset; | |
| 1517 | |
| 1518 // Our locals were accounted for by the caller (or last_frame_adjust on the transistion) | |
| 1519 // Since the callee parameters already account for the callee's params we only need to account for | |
| 1520 // the extra locals. | |
| 1521 | |
| 1522 | |
| 1523 int size = overhead + | |
| 1506 | 1524 ((callee_locals - callee_param_count)*Interpreter::stackElementWords) + |
| 0 | 1525 (moncount*frame::interpreter_frame_monitor_size()) + |
| 1506 | 1526 tempcount*Interpreter::stackElementWords + popframe_extra_args; |
| 0 | 1527 |
| 1528 if (interpreter_frame != NULL) { | |
| 1529 #ifdef ASSERT | |
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1530 if (!EnableInvokeDynamic) |
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1531 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1532 // Probably, since deoptimization doesn't work yet. |
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1533 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
| 0 | 1534 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
| 1535 #endif | |
| 1536 | |
| 1537 interpreter_frame->interpreter_frame_set_method(method); | |
| 1538 // NOTE the difference in using sender_sp and interpreter_frame_sender_sp | |
| 1539 // interpreter_frame_sender_sp is the original sp of the caller (the unextended_sp) | |
| 1540 // and sender_sp is fp+8 | |
| 1541 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
| 1542 | |
| 1543 interpreter_frame->interpreter_frame_set_locals(locals); | |
| 1544 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
| 1545 BasicObjectLock* monbot = montop - moncount; | |
| 1546 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
| 1547 | |
| 1548 // Set last_sp | |
| 1549 intptr_t* rsp = (intptr_t*) monbot - | |
| 1506 | 1550 tempcount*Interpreter::stackElementWords - |
| 0 | 1551 popframe_extra_args; |
| 1552 interpreter_frame->interpreter_frame_set_last_sp(rsp); | |
| 1553 | |
| 1554 // All frames but the initial (oldest) interpreter frame we fill in have a | |
| 1555 // value for sender_sp that allows walking the stack but isn't | |
| 1556 // truly correct. Correct the value here. | |
| 1557 | |
| 1558 if (extra_locals != 0 && | |
| 1559 interpreter_frame->sender_sp() == interpreter_frame->interpreter_frame_sender_sp() ) { | |
| 1560 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + extra_locals); | |
| 1561 } | |
| 1562 *interpreter_frame->interpreter_frame_cache_addr() = | |
| 1563 method->constants()->cache(); | |
| 1564 } | |
| 1565 return size; | |
| 1566 } | |
| 1567 | |
| 1568 | |
| 1569 //------------------------------------------------------------------------------------------------------------------------ | |
| 1570 // Exceptions | |
| 1571 | |
| 1572 void TemplateInterpreterGenerator::generate_throw_exception() { | |
| 1573 // Entry point in previous activation (i.e., if the caller was interpreted) | |
| 1574 Interpreter::_rethrow_exception_entry = __ pc(); | |
| 1295 | 1575 const Register thread = rcx; |
| 0 | 1576 |
| 1577 // Restore sp to interpreter_frame_last_sp even though we are going | |
| 1578 // to empty the expression stack for the exception processing. | |
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1579 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 1580 // rax,: exception |
| 1581 // rdx: return address/pc that threw exception | |
| 1582 __ restore_bcp(); // rsi points to call/send | |
| 1583 __ restore_locals(); | |
| 1584 | |
| 1585 // Entry point for exceptions thrown within interpreter code | |
| 1586 Interpreter::_throw_exception_entry = __ pc(); | |
| 1587 // expression stack is undefined here | |
| 1588 // rax,: exception | |
| 1589 // rsi: exception bcp | |
| 1590 __ verify_oop(rax); | |
| 1591 | |
| 1592 // expression stack must be empty before entering the VM in case of an exception | |
| 1593 __ empty_expression_stack(); | |
| 1594 __ empty_FPU_stack(); | |
| 1595 // find exception handler address and preserve exception oop | |
| 1596 __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); | |
| 1597 // rax,: exception handler entry point | |
| 1598 // rdx: preserved exception oop | |
| 1599 // rsi: bcp for exception handler | |
| 1600 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
| 1601 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
| 1602 | |
| 1603 // If the exception is not handled in the current frame the frame is removed and | |
| 1604 // the exception is rethrown (i.e. exception continuation is _rethrow_exception). | |
| 1605 // | |
| 1606 // Note: At this point the bci is still the bxi for the instruction which caused | |
| 1607 // the exception and the expression stack is empty. Thus, for any VM calls | |
| 1608 // at this point, GC will find a legal oop map (with empty expression stack). | |
| 1609 | |
| 1610 // In current activation | |
| 1611 // tos: exception | |
| 1612 // rsi: exception bcp | |
| 1613 | |
| 1614 // | |
| 1615 // JVMTI PopFrame support | |
| 1616 // | |
| 1617 | |
| 1618 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
| 1619 __ empty_expression_stack(); | |
| 1620 __ empty_FPU_stack(); | |
| 1621 // Set the popframe_processing bit in pending_popframe_condition indicating that we are | |
| 1622 // currently handling popframe, so that call_VMs that may happen later do not trigger new | |
| 1623 // popframe handling cycles. | |
| 1295 | 1624 __ get_thread(thread); |
| 1625 __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset())); | |
| 0 | 1626 __ orl(rdx, JavaThread::popframe_processing_bit); |
| 1295 | 1627 __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx); |
| 0 | 1628 |
| 1629 { | |
| 1630 // Check to see whether we are returning to a deoptimized frame. | |
| 1631 // (The PopFrame call ensures that the caller of the popped frame is | |
| 1632 // either interpreted or compiled and deoptimizes it if compiled.) | |
| 1633 // In this case, we can't call dispatch_next() after the frame is | |
| 1634 // popped, but instead must save the incoming arguments and restore | |
| 1635 // them after deoptimization has occurred. | |
| 1636 // | |
| 1637 // Note that we don't compare the return PC against the | |
| 1638 // deoptimization blob's unpack entry because of the presence of | |
| 1639 // adapter frames in C2. | |
| 1640 Label caller_not_deoptimized; | |
| 304 | 1641 __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); |
| 0 | 1642 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); |
| 1643 __ testl(rax, rax); | |
| 1644 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
| 1645 | |
| 1646 // Compute size of arguments for saving when returning to deoptimized caller | |
| 1647 __ get_method(rax); | |
| 1648 __ verify_oop(rax); | |
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1649 __ load_unsigned_short(rax, Address(rax, in_bytes(methodOopDesc::size_of_parameters_offset()))); |
| 1506 | 1650 __ shlptr(rax, Interpreter::logStackElementSize); |
| 0 | 1651 __ restore_locals(); |
| 304 | 1652 __ subptr(rdi, rax); |
| 1653 __ addptr(rdi, wordSize); | |
| 0 | 1654 // Save these arguments |
| 1295 | 1655 __ get_thread(thread); |
| 1656 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), thread, rax, rdi); | |
| 0 | 1657 |
| 1658 __ remove_activation(vtos, rdx, | |
| 1659 /* throw_monitor_exception */ false, | |
| 1660 /* install_monitor_exception */ false, | |
| 1661 /* notify_jvmdi */ false); | |
| 1662 | |
| 1663 // Inform deoptimization that it is responsible for restoring these arguments | |
| 1295 | 1664 __ get_thread(thread); |
| 1665 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); | |
| 0 | 1666 |
| 1667 // Continue in deoptimization handler | |
| 1668 __ jmp(rdx); | |
| 1669 | |
| 1670 __ bind(caller_not_deoptimized); | |
| 1671 } | |
| 1672 | |
| 1673 __ remove_activation(vtos, rdx, | |
| 1674 /* throw_monitor_exception */ false, | |
| 1675 /* install_monitor_exception */ false, | |
| 1676 /* notify_jvmdi */ false); | |
| 1677 | |
| 1678 // Finish with popframe handling | |
| 1679 // A previous I2C followed by a deoptimization might have moved the | |
| 1680 // outgoing arguments further up the stack. PopFrame expects the | |
| 1681 // mutations to those outgoing arguments to be preserved and other | |
| 1682 // constraints basically require this frame to look exactly as | |
| 1683 // though it had previously invoked an interpreted activation with | |
| 1684 // no space between the top of the expression stack (current | |
| 1685 // last_sp) and the top of stack. Rather than force deopt to | |
| 1686 // maintain this kind of invariant all the time we call a small | |
| 1687 // fixup routine to move the mutated arguments onto the top of our | |
| 1688 // expression stack if necessary. | |
| 304 | 1689 __ mov(rax, rsp); |
| 1690 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
| 1295 | 1691 __ get_thread(thread); |
| 0 | 1692 // PC must point into interpreter here |
| 1295 | 1693 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); |
| 1694 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx); | |
| 1695 __ get_thread(thread); | |
| 1696 __ reset_last_Java_frame(thread, true, true); | |
| 0 | 1697 // Restore the last_sp and null it out |
| 304 | 1698 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
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1699 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 1700 |
| 1701 __ restore_bcp(); | |
| 1702 __ restore_locals(); | |
| 1703 // The method data pointer was incremented already during | |
| 1704 // call profiling. We have to restore the mdp for the current bcp. | |
| 1705 if (ProfileInterpreter) { | |
| 1706 __ set_method_data_pointer_for_bcp(); | |
| 1707 } | |
| 1708 | |
| 1709 // Clear the popframe condition flag | |
| 1295 | 1710 __ get_thread(thread); |
| 1711 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); | |
| 0 | 1712 |
| 1713 __ dispatch_next(vtos); | |
| 1714 // end of PopFrame support | |
| 1715 | |
| 1716 Interpreter::_remove_activation_entry = __ pc(); | |
| 1717 | |
| 1718 // preserve exception over this code sequence | |
| 1719 __ pop_ptr(rax); | |
| 1295 | 1720 __ get_thread(thread); |
| 1721 __ movptr(Address(thread, JavaThread::vm_result_offset()), rax); | |
| 0 | 1722 // remove the activation (without doing throws on illegalMonitorExceptions) |
| 1723 __ remove_activation(vtos, rdx, false, true, false); | |
| 1724 // restore exception | |
| 1295 | 1725 __ get_thread(thread); |
| 1726 __ movptr(rax, Address(thread, JavaThread::vm_result_offset())); | |
| 1727 __ movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD); | |
| 0 | 1728 __ verify_oop(rax); |
| 1729 | |
| 1730 // Inbetween activations - previous activation type unknown yet | |
| 1731 // compute continuation point - the continuation point expects | |
| 1732 // the following registers set up: | |
| 1733 // | |
| 1295 | 1734 // rax: exception |
| 0 | 1735 // rdx: return address/pc that threw exception |
| 1736 // rsp: expression stack of caller | |
| 1295 | 1737 // rbp: rbp, of caller |
| 304 | 1738 __ push(rax); // save exception |
| 1739 __ push(rdx); // save return address | |
| 1295 | 1740 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, rdx); |
| 304 | 1741 __ mov(rbx, rax); // save exception handler |
| 1742 __ pop(rdx); // restore return address | |
| 1743 __ pop(rax); // restore exception | |
| 0 | 1744 // Note that an "issuing PC" is actually the next PC after the call |
| 1745 __ jmp(rbx); // jump to exception handler of caller | |
| 1746 } | |
| 1747 | |
| 1748 | |
| 1749 // | |
| 1750 // JVMTI ForceEarlyReturn support | |
| 1751 // | |
| 1752 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
| 1753 address entry = __ pc(); | |
| 1295 | 1754 const Register thread = rcx; |
| 0 | 1755 |
| 1756 __ restore_bcp(); | |
| 1757 __ restore_locals(); | |
| 1758 __ empty_expression_stack(); | |
| 1759 __ empty_FPU_stack(); | |
| 1760 __ load_earlyret_value(state); | |
| 1761 | |
| 1295 | 1762 __ get_thread(thread); |
| 1763 __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset())); | |
| 0 | 1764 const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); |
| 1765 | |
| 1766 // Clear the earlyret state | |
| 1767 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
| 1768 | |
| 1769 __ remove_activation(state, rsi, | |
| 1770 false, /* throw_monitor_exception */ | |
| 1771 false, /* install_monitor_exception */ | |
| 1772 true); /* notify_jvmdi */ | |
| 1773 __ jmp(rsi); | |
| 1774 return entry; | |
| 1775 } // end of ForceEarlyReturn support | |
| 1776 | |
| 1777 | |
| 1778 //------------------------------------------------------------------------------------------------------------------------ | |
| 1779 // Helper for vtos entry point generation | |
| 1780 | |
| 1781 void TemplateInterpreterGenerator::set_vtos_entry_points (Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) { | |
| 1782 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
| 1783 Label L; | |
| 1784 fep = __ pc(); __ push(ftos); __ jmp(L); | |
| 1785 dep = __ pc(); __ push(dtos); __ jmp(L); | |
| 1786 lep = __ pc(); __ push(ltos); __ jmp(L); | |
| 1787 aep = __ pc(); __ push(atos); __ jmp(L); | |
| 1788 bep = cep = sep = // fall through | |
| 1789 iep = __ pc(); __ push(itos); // fall through | |
| 1790 vep = __ pc(); __ bind(L); // fall through | |
| 1791 generate_and_dispatch(t); | |
| 1792 } | |
| 1793 | |
| 1794 //------------------------------------------------------------------------------------------------------------------------ | |
| 1795 // Generation of individual instructions | |
| 1796 | |
| 1797 // helpers for generate_and_dispatch | |
| 1798 | |
| 1799 | |
| 1800 | |
| 1801 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
| 1802 : TemplateInterpreterGenerator(code) { | |
| 1803 generate_all(); // down here so it can be "virtual" | |
| 1804 } | |
| 1805 | |
| 1806 //------------------------------------------------------------------------------------------------------------------------ | |
| 1807 | |
| 1808 // Non-product code | |
| 1809 #ifndef PRODUCT | |
| 1810 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
| 1811 address entry = __ pc(); | |
| 1812 | |
| 1813 // prepare expression stack | |
| 304 | 1814 __ pop(rcx); // pop return address so expression stack is 'pure' |
| 0 | 1815 __ push(state); // save tosca |
| 1816 | |
| 1817 // pass tosca registers as arguments & call tracer | |
| 1818 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); | |
| 304 | 1819 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) |
| 0 | 1820 __ pop(state); // restore tosca |
| 1821 | |
| 1822 // return | |
| 1823 __ jmp(rcx); | |
| 1824 | |
| 1825 return entry; | |
| 1826 } | |
| 1827 | |
| 1828 | |
| 1829 void TemplateInterpreterGenerator::count_bytecode() { | |
| 304 | 1830 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); |
| 0 | 1831 } |
| 1832 | |
| 1833 | |
| 1834 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
| 304 | 1835 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); |
| 0 | 1836 } |
| 1837 | |
| 1838 | |
| 1839 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
| 1840 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
| 1841 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
| 1842 __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); | |
| 1843 ExternalAddress table((address) BytecodePairHistogram::_counters); | |
| 1844 Address index(noreg, rbx, Address::times_4); | |
| 304 | 1845 __ incrementl(ArrayAddress(table, index)); |
| 0 | 1846 } |
| 1847 | |
| 1848 | |
| 1849 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
| 1850 // Call a little run-time stub to avoid blow-up for each bytecode. | |
| 1851 // The run-time runtime saves the right registers, depending on | |
| 1852 // the tosca in-state for the given template. | |
| 1853 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
| 1854 "entry must have been generated"); | |
| 1855 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); | |
| 1856 } | |
| 1857 | |
| 1858 | |
| 1859 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
| 1860 Label L; | |
| 1861 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
| 1862 StopInterpreterAt); | |
| 1863 __ jcc(Assembler::notEqual, L); | |
| 1864 __ int3(); | |
| 1865 __ bind(L); | |
| 1866 } | |
| 1867 #endif // !PRODUCT | |
| 1868 #endif // CC_INTERP |