Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateInterpreter_x86_32.cpp @ 18857:5214669b01f2
moved generate_deopt_entry_for to InterpreterGenerator for all architectures
Contributed-by: Igor Ignatyev <igor.ignatyev@oracle.com>
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Tue, 13 Jan 2015 13:08:26 +0100 |
| parents | 0bf37f737702 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 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 | |
| 51 | |
| 52 #ifndef CC_INTERP | |
| 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 // Note: There should be a minimal interpreter frame set up when stack | |
| 63 // overflow occurs since we check explicitly for it now. | |
| 64 // | |
| 65 #ifdef ASSERT | |
| 66 { Label L; | |
| 304 | 67 __ lea(rax, Address(rbp, |
| 0 | 68 frame::interpreter_frame_monitor_block_top_offset * wordSize)); |
| 304 | 69 __ cmpptr(rax, rsp); // rax, = maximal rsp for current rbp, |
| 0 | 70 // (stack grows negative) |
| 71 __ jcc(Assembler::aboveEqual, L); // check if frame is complete | |
| 72 __ stop ("interpreter frame not set up"); | |
| 73 __ bind(L); | |
| 74 } | |
| 75 #endif // ASSERT | |
| 76 // Restore bcp under the assumption that the current frame is still | |
| 77 // interpreted | |
| 78 __ restore_bcp(); | |
| 79 | |
| 80 // expression stack must be empty before entering the VM if an exception | |
| 81 // happened | |
| 82 __ empty_expression_stack(); | |
| 83 __ empty_FPU_stack(); | |
| 84 // throw exception | |
| 85 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError)); | |
| 86 return entry; | |
| 87 } | |
| 88 | |
| 89 address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) { | |
| 90 address entry = __ pc(); | |
| 91 // expression stack must be empty before entering the VM if an exception happened | |
| 92 __ empty_expression_stack(); | |
| 93 __ empty_FPU_stack(); | |
| 94 // setup parameters | |
| 95 // ??? convention: expect aberrant index in register rbx, | |
| 96 __ lea(rax, ExternalAddress((address)name)); | |
| 97 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), rax, rbx); | |
| 98 return entry; | |
| 99 } | |
| 100 | |
| 101 address TemplateInterpreterGenerator::generate_ClassCastException_handler() { | |
| 102 address entry = __ pc(); | |
| 103 // object is at TOS | |
| 304 | 104 __ pop(rax); |
| 0 | 105 // expression stack must be empty before entering the VM if an exception |
| 106 // happened | |
| 107 __ empty_expression_stack(); | |
| 108 __ empty_FPU_stack(); | |
| 109 __ call_VM(noreg, | |
| 110 CAST_FROM_FN_PTR(address, | |
| 111 InterpreterRuntime::throw_ClassCastException), | |
| 112 rax); | |
| 113 return entry; | |
| 114 } | |
| 115 | |
| 116 address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) { | |
| 117 assert(!pass_oop || message == NULL, "either oop or message but not both"); | |
| 118 address entry = __ pc(); | |
| 119 if (pass_oop) { | |
| 120 // object is at TOS | |
| 304 | 121 __ pop(rbx); |
| 0 | 122 } |
| 123 // expression stack must be empty before entering the VM if an exception happened | |
| 124 __ empty_expression_stack(); | |
| 125 __ empty_FPU_stack(); | |
| 126 // setup parameters | |
| 127 __ lea(rax, ExternalAddress((address)name)); | |
| 128 if (pass_oop) { | |
| 129 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), rax, rbx); | |
| 130 } else { | |
| 131 if (message != NULL) { | |
| 132 __ lea(rbx, ExternalAddress((address)message)); | |
| 133 } else { | |
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134 __ movptr(rbx, NULL_WORD); |
| 0 | 135 } |
| 136 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx); | |
| 137 } | |
| 138 // throw exception | |
| 139 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
| 140 return entry; | |
| 141 } | |
| 142 | |
| 143 | |
| 144 address TemplateInterpreterGenerator::generate_continuation_for(TosState state) { | |
| 145 address entry = __ pc(); | |
| 146 // NULL last_sp until next java call | |
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147 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 148 __ dispatch_next(state); |
| 149 return entry; | |
| 150 } | |
| 151 | |
| 152 | |
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153 address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) { |
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154 address entry = __ pc(); |
| 0 | 155 |
| 156 #ifdef COMPILER2 | |
| 157 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases | |
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158 if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { |
| 0 | 159 for (int i = 1; i < 8; i++) { |
| 160 __ ffree(i); | |
| 161 } | |
| 162 } else if (UseSSE < 2) { | |
| 163 __ empty_FPU_stack(); | |
| 164 } | |
| 165 #endif | |
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166 if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) { |
| 0 | 167 __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled"); |
| 168 } else { | |
| 169 __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled"); | |
| 170 } | |
| 171 | |
| 172 // In SSE mode, interpreter returns FP results in xmm0 but they need | |
| 173 // to end up back on the FPU so it can operate on them. | |
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174 if (state == ftos && UseSSE >= 1) { |
| 304 | 175 __ subptr(rsp, wordSize); |
| 0 | 176 __ movflt(Address(rsp, 0), xmm0); |
| 177 __ fld_s(Address(rsp, 0)); | |
| 304 | 178 __ addptr(rsp, wordSize); |
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179 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 180 __ subptr(rsp, 2*wordSize); |
| 0 | 181 __ movdbl(Address(rsp, 0), xmm0); |
| 182 __ fld_d(Address(rsp, 0)); | |
| 304 | 183 __ addptr(rsp, 2*wordSize); |
| 0 | 184 } |
| 185 | |
| 186 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_return_entry_for in interpreter"); | |
| 187 | |
| 188 // Restore stack bottom in case i2c adjusted stack | |
| 304 | 189 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
| 0 | 190 // and NULL it as marker that rsp is now tos until next java call |
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191 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 192 |
| 193 __ restore_bcp(); | |
| 194 __ restore_locals(); | |
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195 |
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196 if (state == atos) { |
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197 Register mdp = rbx; |
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198 Register tmp = rcx; |
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199 __ profile_return_type(mdp, rax, tmp); |
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200 } |
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201 |
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202 const Register cache = rbx; |
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203 const Register index = rcx; |
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204 __ get_cache_and_index_at_bcp(cache, index, 1, index_size); |
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205 |
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206 const Register flags = cache; |
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207 __ movl(flags, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
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208 __ andl(flags, ConstantPoolCacheEntry::parameter_size_mask); |
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209 __ lea(rsp, Address(rsp, flags, Interpreter::stackElementScale())); |
| 0 | 210 __ dispatch_next(state, step); |
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211 |
| 0 | 212 return entry; |
| 213 } | |
| 214 | |
| 215 | |
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216 address InterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { |
| 0 | 217 address entry = __ pc(); |
| 218 | |
| 219 // In SSE mode, FP results are in xmm0 | |
| 220 if (state == ftos && UseSSE > 0) { | |
| 304 | 221 __ subptr(rsp, wordSize); |
| 0 | 222 __ movflt(Address(rsp, 0), xmm0); |
| 223 __ fld_s(Address(rsp, 0)); | |
| 304 | 224 __ addptr(rsp, wordSize); |
| 0 | 225 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 226 __ subptr(rsp, 2*wordSize); |
| 0 | 227 __ movdbl(Address(rsp, 0), xmm0); |
| 228 __ fld_d(Address(rsp, 0)); | |
| 304 | 229 __ addptr(rsp, 2*wordSize); |
| 0 | 230 } |
| 231 | |
| 232 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_deopt_entry_for in interpreter"); | |
| 233 | |
| 234 // The stack is not extended by deopt but we must NULL last_sp as this | |
| 235 // entry is like a "return". | |
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236 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 237 __ restore_bcp(); |
| 238 __ restore_locals(); | |
| 239 // handle exceptions | |
| 240 { Label L; | |
| 241 const Register thread = rcx; | |
| 242 __ get_thread(thread); | |
| 304 | 243 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 244 __ jcc(Assembler::zero, L); |
| 245 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
| 246 __ should_not_reach_here(); | |
| 247 __ bind(L); | |
| 248 } | |
| 249 __ dispatch_next(state, step); | |
| 250 return entry; | |
| 251 } | |
| 252 | |
| 253 | |
| 254 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
| 255 int i = 0; | |
| 256 switch (type) { | |
| 257 case T_BOOLEAN: i = 0; break; | |
| 258 case T_CHAR : i = 1; break; | |
| 259 case T_BYTE : i = 2; break; | |
| 260 case T_SHORT : i = 3; break; | |
| 261 case T_INT : // fall through | |
| 262 case T_LONG : // fall through | |
| 263 case T_VOID : i = 4; break; | |
| 264 case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE | |
| 265 case T_DOUBLE : i = 6; break; | |
| 266 case T_OBJECT : // fall through | |
| 267 case T_ARRAY : i = 7; break; | |
| 268 default : ShouldNotReachHere(); | |
| 269 } | |
| 270 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); | |
| 271 return i; | |
| 272 } | |
| 273 | |
| 274 | |
| 275 address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { | |
| 276 address entry = __ pc(); | |
| 277 switch (type) { | |
| 278 case T_BOOLEAN: __ c2bool(rax); break; | |
| 304 | 279 case T_CHAR : __ andptr(rax, 0xFFFF); break; |
| 0 | 280 case T_BYTE : __ sign_extend_byte (rax); break; |
| 281 case T_SHORT : __ sign_extend_short(rax); break; | |
| 282 case T_INT : /* nothing to do */ break; | |
| 283 case T_DOUBLE : | |
| 284 case T_FLOAT : | |
| 285 { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); | |
| 304 | 286 __ pop(t); // remove return address first |
| 0 | 287 // Must return a result for interpreter or compiler. In SSE |
| 288 // mode, results are returned in xmm0 and the FPU stack must | |
| 289 // be empty. | |
| 290 if (type == T_FLOAT && UseSSE >= 1) { | |
| 291 // Load ST0 | |
| 292 __ fld_d(Address(rsp, 0)); | |
| 293 // Store as float and empty fpu stack | |
| 294 __ fstp_s(Address(rsp, 0)); | |
| 295 // and reload | |
| 296 __ movflt(xmm0, Address(rsp, 0)); | |
| 297 } else if (type == T_DOUBLE && UseSSE >= 2 ) { | |
| 298 __ movdbl(xmm0, Address(rsp, 0)); | |
| 299 } else { | |
| 300 // restore ST0 | |
| 301 __ fld_d(Address(rsp, 0)); | |
| 302 } | |
| 303 // and pop the temp | |
| 304 | 304 __ addptr(rsp, 2 * wordSize); |
| 305 __ push(t); // restore return address | |
| 0 | 306 } |
| 307 break; | |
| 308 case T_OBJECT : | |
| 309 // retrieve result from frame | |
| 304 | 310 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
| 0 | 311 // and verify it |
| 312 __ verify_oop(rax); | |
| 313 break; | |
| 314 default : ShouldNotReachHere(); | |
| 315 } | |
| 316 __ ret(0); // return from result handler | |
| 317 return entry; | |
| 318 } | |
| 319 | |
| 320 address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { | |
| 321 address entry = __ pc(); | |
| 322 __ push(state); | |
| 323 __ call_VM(noreg, runtime_entry); | |
| 324 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
| 325 return entry; | |
| 326 } | |
| 327 | |
| 328 | |
| 329 // Helpers for commoning out cases in the various type of method entries. | |
| 330 // | |
| 331 | |
| 332 // increment invocation count & check for overflow | |
| 333 // | |
| 334 // Note: checking for negative value instead of overflow | |
| 335 // so we have a 'sticky' overflow test | |
| 336 // | |
| 337 // rbx,: method | |
| 338 // rcx: invocation counter | |
| 339 // | |
| 340 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
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341 Label done; |
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342 // Note: In tiered we increment either counters in MethodCounters* or in MDO |
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343 // depending if we're profiling or not. |
| 1783 | 344 if (TieredCompilation) { |
| 345 int increment = InvocationCounter::count_increment; | |
| 346 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
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347 Label no_mdo; |
| 1783 | 348 if (ProfileInterpreter) { |
| 349 // Are we profiling? | |
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350 __ movptr(rax, Address(rbx, Method::method_data_offset())); |
| 1783 | 351 __ testptr(rax, rax); |
| 352 __ jccb(Assembler::zero, no_mdo); | |
| 353 // Increment counter in the MDO | |
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354 const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + |
| 1783 | 355 in_bytes(InvocationCounter::counter_offset())); |
| 356 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
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357 __ jmp(done); |
| 1783 | 358 } |
| 359 __ bind(no_mdo); | |
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360 // Increment counter in MethodCounters |
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361 const Address invocation_counter(rax, |
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362 MethodCounters::invocation_counter_offset() + |
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363 InvocationCounter::counter_offset()); |
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364 |
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365 __ get_method_counters(rbx, rax, done); |
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366 __ increment_mask_and_jump(invocation_counter, increment, mask, |
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367 rcx, false, Assembler::zero, overflow); |
| 1783 | 368 __ bind(done); |
| 369 } else { | |
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370 const Address backedge_counter (rax, |
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371 MethodCounters::backedge_counter_offset() + |
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372 InvocationCounter::counter_offset()); |
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373 const Address invocation_counter(rax, |
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374 MethodCounters::invocation_counter_offset() + |
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375 InvocationCounter::counter_offset()); |
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376 |
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377 __ get_method_counters(rbx, rax, done); |
| 0 | 378 |
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379 if (ProfileInterpreter) { |
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380 __ incrementl(Address(rax, |
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381 MethodCounters::interpreter_invocation_counter_offset())); |
| 1783 | 382 } |
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383 |
| 1783 | 384 // Update standard invocation counters |
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385 __ movl(rcx, invocation_counter); |
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386 __ incrementl(rcx, InvocationCounter::count_increment); |
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387 __ movl(invocation_counter, rcx); // save invocation count |
| 1783 | 388 |
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389 __ movl(rax, backedge_counter); // load backedge counter |
| 1783 | 390 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits |
| 391 | |
| 392 __ addl(rcx, rax); // add both counters | |
| 0 | 393 |
| 1783 | 394 // profile_method is non-null only for interpreted method so |
| 395 // profile_method != NULL == !native_call | |
| 396 // BytecodeInterpreter only calls for native so code is elided. | |
| 397 | |
| 398 if (ProfileInterpreter && profile_method != NULL) { | |
| 399 // Test to see if we should create a method data oop | |
| 400 __ cmp32(rcx, | |
| 401 ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
| 402 __ jcc(Assembler::less, *profile_method_continue); | |
| 403 | |
| 404 // if no method data exists, go to profile_method | |
| 405 __ test_method_data_pointer(rax, *profile_method); | |
| 406 } | |
| 407 | |
| 0 | 408 __ cmp32(rcx, |
| 1783 | 409 ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); |
| 410 __ jcc(Assembler::aboveEqual, *overflow); | |
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411 __ bind(done); |
| 0 | 412 } |
| 413 } | |
| 414 | |
| 415 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
| 416 | |
| 417 // Asm interpreter on entry | |
| 418 // rdi - locals | |
| 419 // rsi - bcp | |
| 420 // rbx, - method | |
| 421 // rdx - cpool | |
| 422 // rbp, - interpreter frame | |
| 423 | |
| 424 // C++ interpreter on entry | |
| 425 // rsi - new interpreter state pointer | |
| 426 // rbp - interpreter frame pointer | |
| 427 // rbx - method | |
| 428 | |
| 429 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
| 430 // rbx, - method | |
| 431 // rcx - rcvr (assuming there is one) | |
| 432 // top of stack return address of interpreter caller | |
| 433 // rsp - sender_sp | |
| 434 | |
| 435 // C++ interpreter only | |
| 436 // rsi - previous interpreter state pointer | |
| 437 | |
| 438 // InterpreterRuntime::frequency_counter_overflow takes one argument | |
| 439 // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). | |
| 440 // The call returns the address of the verified entry point for the method or NULL | |
| 441 // if the compilation did not complete (either went background or bailed out). | |
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442 __ movptr(rax, (intptr_t)false); |
| 0 | 443 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); |
| 444 | |
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445 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
| 0 | 446 |
| 447 // Preserve invariant that rsi/rdi contain bcp/locals of sender frame | |
| 448 // and jump to the interpreted entry. | |
| 449 __ jmp(*do_continue, relocInfo::none); | |
| 450 | |
| 451 } | |
| 452 | |
| 453 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
| 454 // see if we've got enough room on the stack for locals plus overhead. | |
| 455 // the expression stack grows down incrementally, so the normal guard | |
| 456 // page mechanism will work for that. | |
| 457 // | |
| 458 // Registers live on entry: | |
| 459 // | |
| 460 // Asm interpreter | |
| 461 // rdx: number of additional locals this frame needs (what we must check) | |
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462 // rbx,: Method* |
| 0 | 463 |
| 464 // destroyed on exit | |
| 465 // rax, | |
| 466 | |
| 467 // NOTE: since the additional locals are also always pushed (wasn't obvious in | |
| 468 // generate_method_entry) so the guard should work for them too. | |
| 469 // | |
| 470 | |
| 471 // monitor entry size: see picture of stack set (generate_method_entry) and frame_x86.hpp | |
| 472 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 473 | |
| 474 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
| 475 // be sure to change this if you add/subtract anything to/from the overhead area | |
| 476 const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; | |
| 477 | |
| 478 const int page_size = os::vm_page_size(); | |
| 479 | |
| 480 Label after_frame_check; | |
| 481 | |
| 482 // see if the frame is greater than one page in size. If so, | |
| 483 // then we need to verify there is enough stack space remaining | |
| 484 // for the additional locals. | |
| 1506 | 485 __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize); |
| 0 | 486 __ jcc(Assembler::belowEqual, after_frame_check); |
| 487 | |
| 488 // compute rsp as if this were going to be the last frame on | |
| 489 // the stack before the red zone | |
| 490 | |
| 491 Label after_frame_check_pop; | |
| 492 | |
| 304 | 493 __ push(rsi); |
| 0 | 494 |
| 495 const Register thread = rsi; | |
| 496 | |
| 497 __ get_thread(thread); | |
| 498 | |
| 499 const Address stack_base(thread, Thread::stack_base_offset()); | |
| 500 const Address stack_size(thread, Thread::stack_size_offset()); | |
| 501 | |
| 502 // locals + overhead, in bytes | |
| 304 | 503 __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); |
| 0 | 504 |
| 505 #ifdef ASSERT | |
| 506 Label stack_base_okay, stack_size_okay; | |
| 507 // verify that thread stack base is non-zero | |
| 304 | 508 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
| 0 | 509 __ jcc(Assembler::notEqual, stack_base_okay); |
| 510 __ stop("stack base is zero"); | |
| 511 __ bind(stack_base_okay); | |
| 512 // verify that thread stack size is non-zero | |
| 304 | 513 __ cmpptr(stack_size, 0); |
| 0 | 514 __ jcc(Assembler::notEqual, stack_size_okay); |
| 515 __ stop("stack size is zero"); | |
| 516 __ bind(stack_size_okay); | |
| 517 #endif | |
| 518 | |
| 519 // Add stack base to locals and subtract stack size | |
| 304 | 520 __ addptr(rax, stack_base); |
| 521 __ subptr(rax, stack_size); | |
| 0 | 522 |
| 523 // Use the maximum number of pages we might bang. | |
| 524 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
| 525 (StackRedPages+StackYellowPages); | |
| 304 | 526 __ addptr(rax, max_pages * page_size); |
| 0 | 527 |
| 528 // check against the current stack bottom | |
| 304 | 529 __ cmpptr(rsp, rax); |
| 0 | 530 __ jcc(Assembler::above, after_frame_check_pop); |
| 531 | |
| 304 | 532 __ pop(rsi); // get saved bcp / (c++ prev state ). |
| 0 | 533 |
| 4743 | 534 // Restore sender's sp as SP. This is necessary if the sender's |
| 535 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
| 536 // and safer anyway in case of JSR292 adaptations. | |
| 0 | 537 |
| 4743 | 538 __ pop(rax); // return address must be moved if SP is changed |
| 539 __ mov(rsp, rsi); | |
| 540 __ push(rax); | |
| 541 | |
| 542 // Note: the restored frame is not necessarily interpreted. | |
| 543 // Use the shared runtime version of the StackOverflowError. | |
| 544 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
| 545 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
| 0 | 546 // all done with frame size check |
| 547 __ bind(after_frame_check_pop); | |
| 304 | 548 __ pop(rsi); |
| 0 | 549 |
| 550 __ bind(after_frame_check); | |
| 551 } | |
| 552 | |
| 553 // Allocate monitor and lock method (asm interpreter) | |
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554 // rbx, - Method* |
| 0 | 555 // |
| 556 void InterpreterGenerator::lock_method(void) { | |
| 557 // synchronize method | |
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558 const Address access_flags (rbx, Method::access_flags_offset()); |
| 0 | 559 const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); |
| 560 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 561 | |
| 562 #ifdef ASSERT | |
| 563 { Label L; | |
| 564 __ movl(rax, access_flags); | |
| 565 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 566 __ jcc(Assembler::notZero, L); | |
| 567 __ stop("method doesn't need synchronization"); | |
| 568 __ bind(L); | |
| 569 } | |
| 570 #endif // ASSERT | |
| 571 // get synchronization object | |
| 572 { Label done; | |
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573 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
| 0 | 574 __ movl(rax, access_flags); |
| 575 __ testl(rax, JVM_ACC_STATIC); | |
| 304 | 576 __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) |
| 0 | 577 __ jcc(Assembler::zero, done); |
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578 __ movptr(rax, Address(rbx, Method::const_offset())); |
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579 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
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580 __ movptr(rax, Address(rax, ConstantPool::pool_holder_offset_in_bytes())); |
| 304 | 581 __ movptr(rax, Address(rax, mirror_offset)); |
| 0 | 582 __ bind(done); |
| 583 } | |
| 584 // add space for monitor & lock | |
| 304 | 585 __ subptr(rsp, entry_size); // add space for a monitor entry |
| 586 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
| 587 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object | |
| 588 __ mov(rdx, rsp); // object address | |
| 0 | 589 __ lock_object(rdx); |
| 590 } | |
| 591 | |
| 592 // | |
| 593 // Generate a fixed interpreter frame. This is identical setup for interpreted methods | |
| 594 // and for native methods hence the shared code. | |
| 595 | |
| 596 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
| 597 // initialize fixed part of activation frame | |
| 304 | 598 __ push(rax); // save return address |
| 0 | 599 __ enter(); // save old & set new rbp, |
| 600 | |
| 601 | |
| 304 | 602 __ push(rsi); // set sender sp |
| 603 __ push((int32_t)NULL_WORD); // leave last_sp as null | |
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604 __ movptr(rsi, Address(rbx,Method::const_offset())); // get ConstMethod* |
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605 __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase |
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606 __ push(rbx); // save Method* |
| 0 | 607 if (ProfileInterpreter) { |
| 608 Label method_data_continue; | |
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609 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
| 304 | 610 __ testptr(rdx, rdx); |
| 0 | 611 __ jcc(Assembler::zero, method_data_continue); |
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612 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
| 0 | 613 __ bind(method_data_continue); |
| 304 | 614 __ push(rdx); // set the mdp (method data pointer) |
| 0 | 615 } else { |
| 304 | 616 __ push(0); |
| 0 | 617 } |
| 618 | |
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619 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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620 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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621 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
| 304 | 622 __ push(rdx); // set constant pool cache |
| 623 __ push(rdi); // set locals pointer | |
| 0 | 624 if (native_call) { |
| 304 | 625 __ push(0); // no bcp |
| 0 | 626 } else { |
| 304 | 627 __ push(rsi); // set bcp |
| 0 | 628 } |
| 304 | 629 __ push(0); // reserve word for pointer to expression stack bottom |
| 630 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
| 0 | 631 } |
| 632 | |
| 633 // End of helpers | |
| 634 | |
| 635 // | |
| 636 // Various method entries | |
| 637 //------------------------------------------------------------------------------------------------------------------------ | |
| 638 // | |
| 639 // | |
| 640 | |
| 641 // Call an accessor method (assuming it is resolved, otherwise drop into vanilla (slow path) entry | |
| 642 | |
| 643 address InterpreterGenerator::generate_accessor_entry(void) { | |
| 644 | |
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645 // rbx,: Method* |
| 0 | 646 // rcx: receiver (preserve for slow entry into asm interpreter) |
| 647 | |
| 648 // rsi: senderSP must preserved for slow path, set SP to it on fast path | |
| 649 | |
| 650 address entry_point = __ pc(); | |
| 651 Label xreturn_path; | |
| 652 | |
| 653 // do fastpath for resolved accessor methods | |
| 654 if (UseFastAccessorMethods) { | |
| 655 Label slow_path; | |
| 656 // If we need a safepoint check, generate full interpreter entry. | |
| 657 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
| 658 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 659 SafepointSynchronize::_not_synchronized); | |
| 660 | |
| 661 __ jcc(Assembler::notEqual, slow_path); | |
| 662 // ASM/C++ Interpreter | |
| 663 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; parameter size = 1 | |
| 664 // Note: We can only use this code if the getfield has been resolved | |
| 665 // and if we don't have a null-pointer exception => check for | |
| 666 // these conditions first and use slow path if necessary. | |
| 667 // rbx,: method | |
| 668 // rcx: receiver | |
| 304 | 669 __ movptr(rax, Address(rsp, wordSize)); |
| 0 | 670 |
| 671 // check if local 0 != NULL and read field | |
| 304 | 672 __ testptr(rax, rax); |
| 0 | 673 __ jcc(Assembler::zero, slow_path); |
| 674 | |
| 675 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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676 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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677 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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678 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
| 0 | 679 // Shift codes right to get the index on the right. |
| 680 // The bytecode fetched looks like <index><0xb4><0x2a> | |
| 681 __ shrl(rdx, 2*BitsPerByte); | |
| 682 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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683 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
| 0 | 684 |
| 685 // rax,: local 0 | |
| 686 // rbx,: method | |
| 687 // rcx: receiver - do not destroy since it is needed for slow path! | |
| 688 // rcx: scratch | |
| 689 // rdx: constant pool cache index | |
| 690 // rdi: constant pool cache | |
| 691 // rsi: sender sp | |
| 692 | |
| 693 // check if getfield has been resolved and read constant pool cache entry | |
| 694 // check the validity of the cache entry by testing whether _indices field | |
| 695 // contains Bytecode::_getfield in b1 byte. | |
| 696 assert(in_words(ConstantPoolCacheEntry::size()) == 4, "adjust shift below"); | |
| 697 __ movl(rcx, | |
| 698 Address(rdi, | |
| 699 rdx, | |
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700 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
| 0 | 701 __ shrl(rcx, 2*BitsPerByte); |
| 702 __ andl(rcx, 0xFF); | |
| 703 __ cmpl(rcx, Bytecodes::_getfield); | |
| 704 __ jcc(Assembler::notEqual, slow_path); | |
| 705 | |
| 706 // Note: constant pool entry is not valid before bytecode is resolved | |
| 304 | 707 __ movptr(rcx, |
| 708 Address(rdi, | |
| 709 rdx, | |
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710 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset())); |
| 0 | 711 __ movl(rdx, |
| 712 Address(rdi, | |
| 713 rdx, | |
|
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|
714 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
| 0 | 715 |
| 716 Label notByte, notShort, notChar; | |
| 717 const Address field_address (rax, rcx, Address::times_1); | |
| 718 | |
| 719 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
| 720 // because they are different sizes. | |
| 721 // Use the type from the constant pool cache | |
|
6266
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|
722 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
|
1d7922586cf6
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|
723 // Make sure we don't need to mask rdx after the above shift |
|
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|
724 ConstantPoolCacheEntry::verify_tos_state_shift(); |
| 0 | 725 __ cmpl(rdx, btos); |
| 726 __ jcc(Assembler::notEqual, notByte); | |
| 727 __ load_signed_byte(rax, field_address); | |
| 728 __ jmp(xreturn_path); | |
| 729 | |
| 730 __ bind(notByte); | |
| 731 __ cmpl(rdx, stos); | |
| 732 __ jcc(Assembler::notEqual, notShort); | |
|
622
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jrose
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changeset
|
733 __ load_signed_short(rax, field_address); |
| 0 | 734 __ jmp(xreturn_path); |
| 735 | |
| 736 __ bind(notShort); | |
| 737 __ cmpl(rdx, ctos); | |
| 738 __ jcc(Assembler::notEqual, notChar); | |
|
622
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|
739 __ load_unsigned_short(rax, field_address); |
| 0 | 740 __ jmp(xreturn_path); |
| 741 | |
| 742 __ bind(notChar); | |
| 743 #ifdef ASSERT | |
| 744 Label okay; | |
| 745 __ cmpl(rdx, atos); | |
| 746 __ jcc(Assembler::equal, okay); | |
| 747 __ cmpl(rdx, itos); | |
| 748 __ jcc(Assembler::equal, okay); | |
| 749 __ stop("what type is this?"); | |
| 750 __ bind(okay); | |
| 751 #endif // ASSERT | |
| 752 // All the rest are a 32 bit wordsize | |
| 304 | 753 // This is ok for now. Since fast accessors should be going away |
| 754 __ movptr(rax, field_address); | |
| 0 | 755 |
| 756 __ bind(xreturn_path); | |
| 757 | |
| 758 // _ireturn/_areturn | |
| 304 | 759 __ pop(rdi); // get return address |
| 760 __ mov(rsp, rsi); // set sp to sender sp | |
| 0 | 761 __ jmp(rdi); |
| 762 | |
| 763 // generate a vanilla interpreter entry as the slow path | |
| 764 __ bind(slow_path); | |
| 765 | |
| 766 (void) generate_normal_entry(false); | |
| 767 return entry_point; | |
| 768 } | |
| 769 return NULL; | |
| 770 | |
| 771 } | |
| 772 | |
|
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|
773 // Method entry for java.lang.ref.Reference.get. |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
774 address InterpreterGenerator::generate_Reference_get_entry(void) { |
|
8001
db9981fd3124
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|
775 #if INCLUDE_ALL_GCS |
|
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|
776 // Code: _aload_0, _getfield, _areturn |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
777 // parameter size = 1 |
|
e1162778c1c8
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|
778 // |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
779 // The code that gets generated by this routine is split into 2 parts: |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
780 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
781 // 2. The slow path - which is an expansion of the regular method entry. |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
782 // |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
783 // Notes:- |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
784 // * In the G1 code we do not check whether we need to block for |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
785 // a safepoint. If G1 is enabled then we must execute the specialized |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
786 // code for Reference.get (except when the Reference object is null) |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
787 // so that we can log the value in the referent field with an SATB |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
788 // update buffer. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
789 // If the code for the getfield template is modified so that the |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
790 // G1 pre-barrier code is executed when the current method is |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
791 // Reference.get() then going through the normal method entry |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
792 // will be fine. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
793 // * The G1 code below can, however, check the receiver object (the instance |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
794 // of java.lang.Reference) and jump to the slow path if null. If the |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
795 // Reference object is null then we obviously cannot fetch the referent |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
796 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
797 // regular method entry code to generate the NPE. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
798 // |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
799 // This code is based on generate_accessor_enty. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
800 |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
801 // rbx,: Method* |
|
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
802 // rcx: receiver (preserve for slow entry into asm interpreter) |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
803 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
804 // rsi: senderSP must preserved for slow path, set SP to it on fast path |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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changeset
|
805 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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changeset
|
806 address entry = __ pc(); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
807 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
808 const int referent_offset = java_lang_ref_Reference::referent_offset; |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
809 guarantee(referent_offset > 0, "referent offset not initialized"); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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changeset
|
810 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
811 if (UseG1GC) { |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
812 Label slow_path; |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
813 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
814 // Check if local 0 != NULL |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
815 // If the receiver is null then it is OK to jump to the slow path. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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changeset
|
816 __ movptr(rax, Address(rsp, wordSize)); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
817 __ testptr(rax, rax); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
818 __ jcc(Assembler::zero, slow_path); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
819 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
820 // rax: local 0 (must be preserved across the G1 barrier call) |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
821 // |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
822 // rbx: method (at this point it's scratch) |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
823 // rcx: receiver (at this point it's scratch) |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
824 // rdx: scratch |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
825 // rdi: scratch |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
826 // |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
827 // rsi: sender sp |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
828 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
829 // Preserve the sender sp in case the pre-barrier |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
830 // calls the runtime |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
831 __ push(rsi); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
832 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
833 // Load the value of the referent field. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
834 const Address field_address(rax, referent_offset); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
835 __ movptr(rax, field_address); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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changeset
|
836 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
837 // Generate the G1 pre-barrier code to log the value of |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
838 // the referent field in an SATB buffer. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
839 __ get_thread(rcx); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
840 __ g1_write_barrier_pre(noreg /* obj */, |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
841 rax /* pre_val */, |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
842 rcx /* thread */, |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
843 rbx /* tmp */, |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
844 true /* tosca_save */, |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
845 true /* expand_call */); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
846 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
847 // _areturn |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
848 __ pop(rsi); // get sender sp |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
849 __ pop(rdi); // get return address |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
850 __ mov(rsp, rsi); // set sp to sender sp |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
851 __ jmp(rdi); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
852 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
853 __ bind(slow_path); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
854 (void) generate_normal_entry(false); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
855 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
856 return entry; |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
857 } |
|
8001
db9981fd3124
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jprovino
parents:
7402
diff
changeset
|
858 #endif // INCLUDE_ALL_GCS |
|
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
859 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
860 // If G1 is not enabled then attempt to go through the accessor entry point |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
861 // Reference.get is an accessor |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
862 return generate_accessor_entry(); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
863 } |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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diff
changeset
|
864 |
|
11080
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10393
diff
changeset
|
865 /** |
|
b800986664f4
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866 * Method entry for static native methods: |
|
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867 * int java.util.zip.CRC32.update(int crc, int b) |
|
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|
868 */ |
|
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|
869 address InterpreterGenerator::generate_CRC32_update_entry() { |
|
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870 if (UseCRC32Intrinsics) { |
|
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|
871 address entry = __ pc(); |
|
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|
872 |
|
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|
873 // rbx,: Method* |
|
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|
874 // rsi: senderSP must preserved for slow path, set SP to it on fast path |
|
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|
875 // rdx: scratch |
|
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|
876 // rdi: scratch |
|
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|
877 |
|
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|
878 Label slow_path; |
|
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|
879 // If we need a safepoint check, generate full interpreter entry. |
|
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|
880 ExternalAddress state(SafepointSynchronize::address_of_state()); |
|
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|
881 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), |
|
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|
882 SafepointSynchronize::_not_synchronized); |
|
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|
883 __ jcc(Assembler::notEqual, slow_path); |
|
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|
884 |
|
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|
885 // We don't generate local frame and don't align stack because |
|
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|
886 // we call stub code and there is no safepoint on this path. |
|
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|
887 |
|
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|
888 // Load parameters |
|
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889 const Register crc = rax; // crc |
|
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890 const Register val = rdx; // source java byte value |
|
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891 const Register tbl = rdi; // scratch |
|
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|
892 |
|
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|
893 // Arguments are reversed on java expression stack |
|
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894 __ movl(val, Address(rsp, wordSize)); // byte value |
|
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895 __ movl(crc, Address(rsp, 2*wordSize)); // Initial CRC |
|
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|
896 |
|
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|
897 __ lea(tbl, ExternalAddress(StubRoutines::crc_table_addr())); |
|
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898 __ notl(crc); // ~crc |
|
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899 __ update_byte_crc32(crc, val, tbl); |
|
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|
900 __ notl(crc); // ~crc |
|
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|
901 // result in rax |
|
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|
902 |
|
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|
903 // _areturn |
|
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|
904 __ pop(rdi); // get return address |
|
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|
905 __ mov(rsp, rsi); // set sp to sender sp |
|
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|
906 __ jmp(rdi); |
|
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|
907 |
|
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|
908 // generate a vanilla native entry as the slow path |
|
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|
909 __ bind(slow_path); |
|
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|
910 |
|
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|
911 (void) generate_native_entry(false); |
|
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|
912 |
|
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|
913 return entry; |
|
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|
914 } |
|
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|
915 return generate_native_entry(false); |
|
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|
916 } |
|
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|
917 |
|
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|
918 /** |
|
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|
919 * Method entry for static native methods: |
|
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|
920 * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len) |
|
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921 * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len) |
|
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|
922 */ |
|
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|
923 address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) { |
|
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|
924 if (UseCRC32Intrinsics) { |
|
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|
925 address entry = __ pc(); |
|
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|
926 |
|
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|
927 // rbx,: Method* |
|
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|
928 // rsi: senderSP must preserved for slow path, set SP to it on fast path |
|
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|
929 // rdx: scratch |
|
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|
930 // rdi: scratch |
|
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|
931 |
|
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|
932 Label slow_path; |
|
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|
933 // If we need a safepoint check, generate full interpreter entry. |
|
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|
934 ExternalAddress state(SafepointSynchronize::address_of_state()); |
|
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|
935 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), |
|
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|
936 SafepointSynchronize::_not_synchronized); |
|
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|
937 __ jcc(Assembler::notEqual, slow_path); |
|
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|
938 |
|
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|
939 // We don't generate local frame and don't align stack because |
|
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|
940 // we call stub code and there is no safepoint on this path. |
|
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|
941 |
|
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|
942 // Load parameters |
|
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|
943 const Register crc = rax; // crc |
|
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|
944 const Register buf = rdx; // source java byte array address |
|
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|
945 const Register len = rdi; // length |
|
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|
946 |
|
b800986664f4
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|
947 // Arguments are reversed on java expression stack |
|
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|
948 __ movl(len, Address(rsp, wordSize)); // Length |
|
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|
949 // Calculate address of start element |
|
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|
950 if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { |
|
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|
951 __ movptr(buf, Address(rsp, 3*wordSize)); // long buf |
|
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|
952 __ addptr(buf, Address(rsp, 2*wordSize)); // + offset |
|
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|
953 __ movl(crc, Address(rsp, 5*wordSize)); // Initial CRC |
|
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|
954 } else { |
|
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|
955 __ movptr(buf, Address(rsp, 3*wordSize)); // byte[] array |
|
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|
956 __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size |
|
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|
957 __ addptr(buf, Address(rsp, 2*wordSize)); // + offset |
|
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|
958 __ movl(crc, Address(rsp, 4*wordSize)); // Initial CRC |
|
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|
959 } |
|
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|
960 |
|
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|
961 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len); |
|
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|
962 // result in rax |
|
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|
963 |
|
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changeset
|
964 // _areturn |
|
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|
965 __ pop(rdi); // get return address |
|
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|
966 __ mov(rsp, rsi); // set sp to sender sp |
|
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|
967 __ jmp(rdi); |
|
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|
968 |
|
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|
969 // generate a vanilla native entry as the slow path |
|
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|
970 __ bind(slow_path); |
|
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|
971 |
|
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|
972 (void) generate_native_entry(false); |
|
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|
973 |
|
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|
974 return entry; |
|
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|
975 } |
|
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|
976 return generate_native_entry(false); |
|
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|
977 } |
|
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|
978 |
| 0 | 979 // |
| 980 // Interpreter stub for calling a native method. (asm interpreter) | |
| 981 // This sets up a somewhat different looking stack for calling the native method | |
| 982 // than the typical interpreter frame setup. | |
| 983 // | |
| 984 | |
| 985 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
| 986 // determine code generation flags | |
| 987 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 988 | |
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989 // rbx,: Method* |
| 0 | 990 // rsi: sender sp |
| 991 // rsi: previous interpreter state (C++ interpreter) must preserve | |
| 992 address entry_point = __ pc(); | |
| 993 | |
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994 const Address constMethod (rbx, Method::const_offset()); |
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995 const Address access_flags (rbx, Method::access_flags_offset()); |
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996 const Address size_of_parameters(rcx, ConstMethod::size_of_parameters_offset()); |
| 0 | 997 |
| 998 // get parameter size (always needed) | |
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999 __ movptr(rcx, constMethod); |
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1000 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 1001 |
| 1002 // native calls don't need the stack size check since they have no expression stack | |
| 1003 // and the arguments are already on the stack and we only add a handful of words | |
| 1004 // to the stack | |
| 1005 | |
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1006 // rbx,: Method* |
| 0 | 1007 // rcx: size of parameters |
| 1008 // rsi: sender sp | |
| 1009 | |
| 304 | 1010 __ pop(rax); // get return address |
| 0 | 1011 // for natives the size of locals is zero |
| 1012 | |
| 1013 // compute beginning of parameters (rdi) | |
| 304 | 1014 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
| 0 | 1015 |
| 1016 | |
| 1017 // add 2 zero-initialized slots for native calls | |
| 1018 // NULL result handler | |
| 304 | 1019 __ push((int32_t)NULL_WORD); |
| 0 | 1020 // NULL oop temp (mirror or jni oop result) |
| 304 | 1021 __ push((int32_t)NULL_WORD); |
| 0 | 1022 |
| 1023 // initialize fixed part of activation frame | |
| 1024 generate_fixed_frame(true); | |
| 1025 | |
| 1026 // make sure method is native & not abstract | |
| 1027 #ifdef ASSERT | |
| 1028 __ movl(rax, access_flags); | |
| 1029 { | |
| 1030 Label L; | |
| 1031 __ testl(rax, JVM_ACC_NATIVE); | |
| 1032 __ jcc(Assembler::notZero, L); | |
| 1033 __ stop("tried to execute non-native method as native"); | |
| 1034 __ bind(L); | |
| 1035 } | |
| 1036 { Label L; | |
| 1037 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 1038 __ jcc(Assembler::zero, L); | |
| 1039 __ stop("tried to execute abstract method in interpreter"); | |
| 1040 __ bind(L); | |
| 1041 } | |
| 1042 #endif | |
| 1043 | |
| 1044 // Since at this point in the method invocation the exception handler | |
| 1045 // would try to exit the monitor of synchronized methods which hasn't | |
| 1046 // been entered yet, we set the thread local variable | |
| 1047 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 1048 // check this flag. | |
| 1049 | |
| 1050 __ get_thread(rax); | |
| 1051 const Address do_not_unlock_if_synchronized(rax, | |
| 1052 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 1053 __ movbool(do_not_unlock_if_synchronized, true); | |
| 1054 | |
| 1055 // increment invocation count & check for overflow | |
| 1056 Label invocation_counter_overflow; | |
| 1057 if (inc_counter) { | |
| 1058 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
| 1059 } | |
| 1060 | |
| 1061 Label continue_after_compile; | |
| 1062 __ bind(continue_after_compile); | |
| 1063 | |
| 1064 bang_stack_shadow_pages(true); | |
| 1065 | |
| 1066 // reset the _do_not_unlock_if_synchronized flag | |
| 1067 __ get_thread(rax); | |
| 1068 __ movbool(do_not_unlock_if_synchronized, false); | |
| 1069 | |
| 1070 // check for synchronized methods | |
| 1071 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 1072 // so method is not locked if overflows. | |
| 1073 // | |
| 1074 if (synchronized) { | |
| 1075 lock_method(); | |
| 1076 } else { | |
| 1077 // no synchronization necessary | |
| 1078 #ifdef ASSERT | |
| 1079 { Label L; | |
| 1080 __ movl(rax, access_flags); | |
| 1081 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 1082 __ jcc(Assembler::zero, L); | |
| 1083 __ stop("method needs synchronization"); | |
| 1084 __ bind(L); | |
| 1085 } | |
| 1086 #endif | |
| 1087 } | |
| 1088 | |
| 1089 // start execution | |
| 1090 #ifdef ASSERT | |
| 1091 { Label L; | |
| 1092 const Address monitor_block_top (rbp, | |
| 1093 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 1094 __ movptr(rax, monitor_block_top); |
| 1095 __ cmpptr(rax, rsp); | |
| 0 | 1096 __ jcc(Assembler::equal, L); |
| 1097 __ stop("broken stack frame setup in interpreter"); | |
| 1098 __ bind(L); | |
| 1099 } | |
| 1100 #endif | |
| 1101 | |
| 1102 // jvmti/dtrace support | |
| 1103 __ notify_method_entry(); | |
| 1104 | |
| 1105 // work registers | |
| 1106 const Register method = rbx; | |
| 1107 const Register thread = rdi; | |
| 1108 const Register t = rcx; | |
| 1109 | |
| 1110 // allocate space for parameters | |
| 1111 __ get_method(method); | |
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1112 __ movptr(t, Address(method, Method::const_offset())); |
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1113 __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); |
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1114 |
| 1506 | 1115 __ shlptr(t, Interpreter::logStackElementSize); |
| 304 | 1116 __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror |
| 1117 __ subptr(rsp, t); | |
| 1118 __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics | |
| 0 | 1119 |
| 1120 // get signature handler | |
| 1121 { Label L; | |
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1122 __ movptr(t, Address(method, Method::signature_handler_offset())); |
| 304 | 1123 __ testptr(t, t); |
| 0 | 1124 __ jcc(Assembler::notZero, L); |
| 1125 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
| 1126 __ get_method(method); | |
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1127 __ movptr(t, Address(method, Method::signature_handler_offset())); |
| 0 | 1128 __ bind(L); |
| 1129 } | |
| 1130 | |
| 1131 // call signature handler | |
| 1132 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); | |
| 1133 assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); | |
| 1134 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); | |
| 1135 // The generated handlers do not touch RBX (the method oop). | |
| 1136 // However, large signatures cannot be cached and are generated | |
| 1137 // each time here. The slow-path generator will blow RBX | |
| 1138 // sometime, so we must reload it after the call. | |
| 1139 __ call(t); | |
| 1140 __ get_method(method); // slow path call blows RBX on DevStudio 5.0 | |
| 1141 | |
| 1142 // result handler is in rax, | |
| 1143 // set result handler | |
| 304 | 1144 __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); |
| 0 | 1145 |
| 1146 // pass mirror handle if static call | |
| 1147 { Label L; | |
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1148 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1149 __ movl(t, Address(method, Method::access_flags_offset())); |
| 0 | 1150 __ testl(t, JVM_ACC_STATIC); |
| 1151 __ jcc(Assembler::zero, L); | |
| 1152 // get mirror | |
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1153 __ movptr(t, Address(method, Method:: const_offset())); |
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1154 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1155 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
| 304 | 1156 __ movptr(t, Address(t, mirror_offset)); |
| 0 | 1157 // copy mirror into activation frame |
| 304 | 1158 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); |
| 0 | 1159 // pass handle to mirror |
| 304 | 1160 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); |
| 1161 __ movptr(Address(rsp, wordSize), t); | |
| 0 | 1162 __ bind(L); |
| 1163 } | |
| 1164 | |
| 1165 // get native function entry point | |
| 1166 { Label L; | |
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1167 __ movptr(rax, Address(method, Method::native_function_offset())); |
| 0 | 1168 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
| 304 | 1169 __ cmpptr(rax, unsatisfied.addr()); |
| 0 | 1170 __ jcc(Assembler::notEqual, L); |
| 1171 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
| 1172 __ get_method(method); | |
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1173 __ movptr(rax, Address(method, Method::native_function_offset())); |
| 0 | 1174 __ bind(L); |
| 1175 } | |
| 1176 | |
| 1177 // pass JNIEnv | |
| 1178 __ get_thread(thread); | |
| 304 | 1179 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); |
| 1180 __ movptr(Address(rsp, 0), t); | |
| 0 | 1181 |
| 1182 // set_last_Java_frame_before_call | |
| 1183 // It is enough that the pc() | |
| 1184 // points into the right code segment. It does not have to be the correct return pc. | |
| 1185 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); | |
| 1186 | |
| 1187 // change thread state | |
| 1188 #ifdef ASSERT | |
| 1189 { Label L; | |
| 1190 __ movl(t, Address(thread, JavaThread::thread_state_offset())); | |
| 1191 __ cmpl(t, _thread_in_Java); | |
| 1192 __ jcc(Assembler::equal, L); | |
| 1193 __ stop("Wrong thread state in native stub"); | |
| 1194 __ bind(L); | |
| 1195 } | |
| 1196 #endif | |
| 1197 | |
| 1198 // Change state to native | |
| 1199 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
| 1200 __ call(rax); | |
| 1201 | |
| 1202 // result potentially in rdx:rax or ST0 | |
| 1203 | |
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1204 // Verify or restore cpu control state after JNI call |
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1205 __ restore_cpu_control_state_after_jni(); |
| 0 | 1206 |
| 1207 // save potential result in ST(0) & rdx:rax | |
| 1208 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - | |
| 1209 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) | |
| 1210 // It is safe to do this push because state is _thread_in_native and return address will be found | |
| 1211 // via _last_native_pc and not via _last_jave_sp | |
| 1212 | |
| 1213 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. | |
| 1214 // If the order changes or anything else is added to the stack the code in | |
| 1215 // interpreter_frame_result will have to be changed. | |
| 1216 | |
| 1217 { Label L; | |
| 1218 Label push_double; | |
| 1219 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); | |
| 1220 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); | |
| 1221 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
| 1222 float_handler.addr()); | |
| 1223 __ jcc(Assembler::equal, push_double); | |
| 1224 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
| 1225 double_handler.addr()); | |
| 1226 __ jcc(Assembler::notEqual, L); | |
| 1227 __ bind(push_double); | |
| 1228 __ push(dtos); | |
| 1229 __ bind(L); | |
| 1230 } | |
| 1231 __ push(ltos); | |
| 1232 | |
| 1233 // change thread state | |
| 1234 __ get_thread(thread); | |
| 1235 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
| 1236 if(os::is_MP()) { | |
| 1237 if (UseMembar) { | |
| 304 | 1238 // Force this write out before the read below |
| 1239 __ membar(Assembler::Membar_mask_bits( | |
| 1240 Assembler::LoadLoad | Assembler::LoadStore | | |
| 1241 Assembler::StoreLoad | Assembler::StoreStore)); | |
| 0 | 1242 } else { |
| 1243 // Write serialization page so VM thread can do a pseudo remote membar. | |
| 1244 // We use the current thread pointer to calculate a thread specific | |
| 1245 // offset to write to within the page. This minimizes bus traffic | |
| 1246 // due to cache line collision. | |
| 1247 __ serialize_memory(thread, rcx); | |
| 1248 } | |
| 1249 } | |
| 1250 | |
| 1251 if (AlwaysRestoreFPU) { | |
| 1252 // Make sure the control word is correct. | |
| 1253 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
| 1254 } | |
| 1255 | |
| 1256 // check for safepoint operation in progress and/or pending suspend requests | |
| 1257 { Label Continue; | |
| 1258 | |
| 1259 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 1260 SafepointSynchronize::_not_synchronized); | |
| 1261 | |
| 1262 Label L; | |
| 1263 __ jcc(Assembler::notEqual, L); | |
| 1264 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
| 1265 __ jcc(Assembler::equal, Continue); | |
| 1266 __ bind(L); | |
| 1267 | |
| 1268 // Don't use call_VM as it will see a possible pending exception and forward it | |
| 1269 // and never return here preventing us from clearing _last_native_pc down below. | |
| 1270 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
| 1271 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
| 1272 // by hand. | |
| 1273 // | |
| 304 | 1274 __ push(thread); |
| 0 | 1275 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
| 1276 JavaThread::check_special_condition_for_native_trans))); | |
| 1277 __ increment(rsp, wordSize); | |
| 1278 __ get_thread(thread); | |
| 1279 | |
| 1280 __ bind(Continue); | |
| 1281 } | |
| 1282 | |
| 1283 // change thread state | |
| 1284 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
| 1285 | |
| 1286 __ reset_last_Java_frame(thread, true, true); | |
| 1287 | |
| 1288 // reset handle block | |
| 304 | 1289 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); |
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1290 __ movl(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
| 0 | 1291 |
| 1292 // If result was an oop then unbox and save it in the frame | |
| 1293 { Label L; | |
| 1294 Label no_oop, store_result; | |
| 1295 ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); | |
| 1296 __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), | |
| 1297 handler.addr()); | |
| 1298 __ jcc(Assembler::notEqual, no_oop); | |
| 304 | 1299 __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); |
| 0 | 1300 __ pop(ltos); |
| 304 | 1301 __ testptr(rax, rax); |
| 0 | 1302 __ jcc(Assembler::zero, store_result); |
| 1303 // unbox | |
| 304 | 1304 __ movptr(rax, Address(rax, 0)); |
| 0 | 1305 __ bind(store_result); |
| 304 | 1306 __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); |
| 0 | 1307 // keep stack depth as expected by pushing oop which will eventually be discarded |
| 1308 __ push(ltos); | |
| 1309 __ bind(no_oop); | |
| 1310 } | |
| 1311 | |
| 1312 { | |
| 1313 Label no_reguard; | |
| 1314 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
| 1315 __ jcc(Assembler::notEqual, no_reguard); | |
| 1316 | |
| 304 | 1317 __ pusha(); |
| 0 | 1318 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
| 304 | 1319 __ popa(); |
| 0 | 1320 |
| 1321 __ bind(no_reguard); | |
| 1322 } | |
| 1323 | |
| 1324 // restore rsi to have legal interpreter frame, | |
| 1325 // i.e., bci == 0 <=> rsi == code_base() | |
| 1326 // Can't call_VM until bcp is within reasonable. | |
| 1327 __ get_method(method); // method is junk from thread_in_native to now. | |
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1328 __ movptr(rsi, Address(method,Method::const_offset())); // get ConstMethod* |
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1329 __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase |
| 0 | 1330 |
| 1331 // handle exceptions (exception handling will handle unlocking!) | |
| 1332 { Label L; | |
| 304 | 1333 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 1334 __ jcc(Assembler::zero, L); |
| 1335 // Note: At some point we may want to unify this with the code used in call_VM_base(); | |
| 1336 // i.e., we should use the StubRoutines::forward_exception code. For now this | |
| 1337 // doesn't work here because the rsp is not correctly set at this point. | |
| 1338 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
| 1339 __ should_not_reach_here(); | |
| 1340 __ bind(L); | |
| 1341 } | |
| 1342 | |
| 1343 // do unlocking if necessary | |
| 1344 { Label L; | |
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1345 __ movl(t, Address(method, Method::access_flags_offset())); |
| 0 | 1346 __ testl(t, JVM_ACC_SYNCHRONIZED); |
| 1347 __ jcc(Assembler::zero, L); | |
| 1348 // the code below should be shared with interpreter macro assembler implementation | |
| 1349 { Label unlock; | |
| 1350 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 1351 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 1352 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
| 1353 | |
| 304 | 1354 __ lea(rdx, monitor); // address of first monitor |
| 0 | 1355 |
| 304 | 1356 __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
| 1357 __ testptr(t, t); | |
| 0 | 1358 __ jcc(Assembler::notZero, unlock); |
| 1359 | |
| 1360 // Entry already unlocked, need to throw exception | |
| 1361 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 1362 __ should_not_reach_here(); | |
| 1363 | |
| 1364 __ bind(unlock); | |
| 1365 __ unlock_object(rdx); | |
| 1366 } | |
| 1367 __ bind(L); | |
| 1368 } | |
| 1369 | |
| 1370 // jvmti/dtrace support | |
| 1371 // Note: This must happen _after_ handling/throwing any exceptions since | |
| 1372 // the exception handler code notifies the runtime of method exits | |
| 1373 // too. If this happens before, method entry/exit notifications are | |
| 1374 // not properly paired (was bug - gri 11/22/99). | |
| 1375 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
| 1376 | |
| 1377 // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result | |
| 1378 __ pop(ltos); | |
| 304 | 1379 __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
| 0 | 1380 __ call(t); |
| 1381 | |
| 1382 // remove activation | |
| 304 | 1383 __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 1384 __ leave(); // remove frame anchor |
| 304 | 1385 __ pop(rdi); // get return address |
| 1386 __ mov(rsp, t); // set sp to sender sp | |
| 0 | 1387 __ jmp(rdi); |
| 1388 | |
| 1389 if (inc_counter) { | |
| 1390 // Handle overflow of counter and compile method | |
| 1391 __ bind(invocation_counter_overflow); | |
| 1392 generate_counter_overflow(&continue_after_compile); | |
| 1393 } | |
| 1394 | |
| 1395 return entry_point; | |
| 1396 } | |
| 1397 | |
| 1398 // | |
| 1399 // Generic interpreted method entry to (asm) interpreter | |
| 1400 // | |
| 1401 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
| 1402 // determine code generation flags | |
| 1403 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 1404 | |
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1405 // rbx,: Method* |
| 0 | 1406 // rsi: sender sp |
| 1407 address entry_point = __ pc(); | |
| 1408 | |
|
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1409 const Address constMethod (rbx, Method::const_offset()); |
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1410 const Address access_flags (rbx, Method::access_flags_offset()); |
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1411 const Address size_of_parameters(rdx, ConstMethod::size_of_parameters_offset()); |
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1412 const Address size_of_locals (rdx, ConstMethod::size_of_locals_offset()); |
| 0 | 1413 |
| 1414 // get parameter size (always needed) | |
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1415 __ movptr(rdx, constMethod); |
|
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1416 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 1417 |
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1418 // rbx,: Method* |
| 0 | 1419 // rcx: size of parameters |
| 1420 | |
| 1421 // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
| 1422 | |
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1423 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
| 0 | 1424 __ subl(rdx, rcx); // rdx = no. of additional locals |
| 1425 | |
| 1426 // see if we've got enough room on the stack for locals plus overhead. | |
| 1427 generate_stack_overflow_check(); | |
| 1428 | |
| 1429 // get return address | |
| 304 | 1430 __ pop(rax); |
| 0 | 1431 |
| 1432 // compute beginning of parameters (rdi) | |
| 304 | 1433 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
| 0 | 1434 |
| 1435 // rdx - # of additional locals | |
| 1436 // allocate space for locals | |
| 1437 // explicitly initialize locals | |
| 1438 { | |
| 1439 Label exit, loop; | |
| 1440 __ testl(rdx, rdx); | |
| 1441 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
| 1442 __ bind(loop); | |
| 304 | 1443 __ push((int32_t)NULL_WORD); // initialize local variables |
| 0 | 1444 __ decrement(rdx); // until everything initialized |
| 1445 __ jcc(Assembler::greater, loop); | |
| 1446 __ bind(exit); | |
| 1447 } | |
| 1448 | |
| 1449 // initialize fixed part of activation frame | |
| 1450 generate_fixed_frame(false); | |
| 1451 | |
| 1452 // make sure method is not native & not abstract | |
| 1453 #ifdef ASSERT | |
| 1454 __ movl(rax, access_flags); | |
| 1455 { | |
| 1456 Label L; | |
| 1457 __ testl(rax, JVM_ACC_NATIVE); | |
| 1458 __ jcc(Assembler::zero, L); | |
| 1459 __ stop("tried to execute native method as non-native"); | |
| 1460 __ bind(L); | |
| 1461 } | |
| 1462 { Label L; | |
| 1463 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 1464 __ jcc(Assembler::zero, L); | |
| 1465 __ stop("tried to execute abstract method in interpreter"); | |
| 1466 __ bind(L); | |
| 1467 } | |
| 1468 #endif | |
| 1469 | |
| 1470 // Since at this point in the method invocation the exception handler | |
| 1471 // would try to exit the monitor of synchronized methods which hasn't | |
| 1472 // been entered yet, we set the thread local variable | |
| 1473 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 1474 // check this flag. | |
| 1475 | |
| 1476 __ get_thread(rax); | |
| 1477 const Address do_not_unlock_if_synchronized(rax, | |
| 1478 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 1479 __ movbool(do_not_unlock_if_synchronized, true); | |
| 1480 | |
|
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1481 __ profile_parameters_type(rax, rcx, rdx); |
| 0 | 1482 // increment invocation count & check for overflow |
| 1483 Label invocation_counter_overflow; | |
| 1484 Label profile_method; | |
| 1485 Label profile_method_continue; | |
| 1486 if (inc_counter) { | |
| 1487 generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); | |
| 1488 if (ProfileInterpreter) { | |
| 1489 __ bind(profile_method_continue); | |
| 1490 } | |
| 1491 } | |
| 1492 Label continue_after_compile; | |
| 1493 __ bind(continue_after_compile); | |
| 1494 | |
| 1495 bang_stack_shadow_pages(false); | |
| 1496 | |
| 1497 // reset the _do_not_unlock_if_synchronized flag | |
| 1498 __ get_thread(rax); | |
| 1499 __ movbool(do_not_unlock_if_synchronized, false); | |
| 1500 | |
| 1501 // check for synchronized methods | |
| 1502 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 1503 // so method is not locked if overflows. | |
| 1504 // | |
| 1505 if (synchronized) { | |
| 1506 // Allocate monitor and lock method | |
| 1507 lock_method(); | |
| 1508 } else { | |
| 1509 // no synchronization necessary | |
| 1510 #ifdef ASSERT | |
| 1511 { Label L; | |
| 1512 __ movl(rax, access_flags); | |
| 1513 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 1514 __ jcc(Assembler::zero, L); | |
| 1515 __ stop("method needs synchronization"); | |
| 1516 __ bind(L); | |
| 1517 } | |
| 1518 #endif | |
| 1519 } | |
| 1520 | |
| 1521 // start execution | |
| 1522 #ifdef ASSERT | |
| 1523 { Label L; | |
| 1524 const Address monitor_block_top (rbp, | |
| 1525 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 1526 __ movptr(rax, monitor_block_top); |
| 1527 __ cmpptr(rax, rsp); | |
| 0 | 1528 __ jcc(Assembler::equal, L); |
| 1529 __ stop("broken stack frame setup in interpreter"); | |
| 1530 __ bind(L); | |
| 1531 } | |
| 1532 #endif | |
| 1533 | |
| 1534 // jvmti support | |
| 1535 __ notify_method_entry(); | |
| 1536 | |
| 1537 __ dispatch_next(vtos); | |
| 1538 | |
| 1539 // invocation counter overflow | |
| 1540 if (inc_counter) { | |
| 1541 if (ProfileInterpreter) { | |
| 1542 // We have decided to profile this method in the interpreter | |
| 1543 __ bind(profile_method); | |
|
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1544 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1545 __ set_method_data_pointer_for_bcp(); |
|
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1546 __ get_method(rbx); |
| 0 | 1547 __ jmp(profile_method_continue); |
| 1548 } | |
| 1549 // Handle overflow of counter and compile method | |
| 1550 __ bind(invocation_counter_overflow); | |
| 1551 generate_counter_overflow(&continue_after_compile); | |
| 1552 } | |
| 1553 | |
| 1554 return entry_point; | |
| 1555 } | |
| 1556 | |
| 1557 //------------------------------------------------------------------------------------------------------------------------ | |
| 1558 // Entry points | |
| 1559 // | |
| 1560 // Here we generate the various kind of entries into the interpreter. | |
| 1561 // The two main entry type are generic bytecode methods and native call method. | |
| 1562 // These both come in synchronized and non-synchronized versions but the | |
| 1563 // frame layout they create is very similar. The other method entry | |
| 1564 // types are really just special purpose entries that are really entry | |
| 1565 // and interpretation all in one. These are for trivial methods like | |
| 1566 // accessor, empty, or special math methods. | |
| 1567 // | |
| 1568 // When control flow reaches any of the entry types for the interpreter | |
| 1569 // the following holds -> | |
| 1570 // | |
| 1571 // Arguments: | |
| 1572 // | |
|
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1573 // rbx,: Method* |
| 0 | 1574 // rcx: receiver |
| 1575 // | |
| 1576 // | |
| 1577 // Stack layout immediately at entry | |
| 1578 // | |
| 1579 // [ return address ] <--- rsp | |
| 1580 // [ parameter n ] | |
| 1581 // ... | |
| 1582 // [ parameter 1 ] | |
| 1583 // [ expression stack ] (caller's java expression stack) | |
| 1584 | |
| 1585 // Assuming that we don't go to one of the trivial specialized | |
| 1586 // entries the stack will look like below when we are ready to execute | |
| 1587 // the first bytecode (or call the native routine). The register usage | |
| 1588 // will be as the template based interpreter expects (see interpreter_x86.hpp). | |
| 1589 // | |
| 1590 // local variables follow incoming parameters immediately; i.e. | |
| 1591 // the return address is moved to the end of the locals). | |
| 1592 // | |
| 1593 // [ monitor entry ] <--- rsp | |
| 1594 // ... | |
| 1595 // [ monitor entry ] | |
| 1596 // [ expr. stack bottom ] | |
| 1597 // [ saved rsi ] | |
| 1598 // [ current rdi ] | |
|
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1599 // [ Method* ] |
| 0 | 1600 // [ saved rbp, ] <--- rbp, |
| 1601 // [ return address ] | |
| 1602 // [ local variable m ] | |
| 1603 // ... | |
| 1604 // [ local variable 1 ] | |
| 1605 // [ parameter n ] | |
| 1606 // ... | |
| 1607 // [ parameter 1 ] <--- rdi | |
| 1608 | |
| 1609 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { | |
| 1610 // determine code generation flags | |
| 1611 bool synchronized = false; | |
| 1612 address entry_point = NULL; | |
|
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1613 InterpreterGenerator* ig_this = (InterpreterGenerator*)this; |
| 0 | 1614 |
| 1615 switch (kind) { | |
|
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1616 case Interpreter::zerolocals : break; |
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1617 case Interpreter::zerolocals_synchronized: synchronized = true; break; |
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1618 case Interpreter::native : entry_point = ig_this->generate_native_entry(false); break; |
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1619 case Interpreter::native_synchronized : entry_point = ig_this->generate_native_entry(true); break; |
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1620 case Interpreter::empty : entry_point = ig_this->generate_empty_entry(); break; |
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1621 case Interpreter::accessor : entry_point = ig_this->generate_accessor_entry(); break; |
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1622 case Interpreter::abstract : entry_point = ig_this->generate_abstract_entry(); break; |
| 0 | 1623 |
| 1624 case Interpreter::java_lang_math_sin : // fall thru | |
| 1625 case Interpreter::java_lang_math_cos : // fall thru | |
| 1626 case Interpreter::java_lang_math_tan : // fall thru | |
| 1627 case Interpreter::java_lang_math_abs : // fall thru | |
| 1628 case Interpreter::java_lang_math_log : // fall thru | |
| 1629 case Interpreter::java_lang_math_log10 : // fall thru | |
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1630 case Interpreter::java_lang_math_sqrt : // fall thru |
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1631 case Interpreter::java_lang_math_pow : // fall thru |
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1632 case Interpreter::java_lang_math_exp : entry_point = ig_this->generate_math_entry(kind); break; |
|
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1633 case Interpreter::java_lang_ref_reference_get |
|
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1634 : entry_point = ig_this->generate_Reference_get_entry(); break; |
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1635 case Interpreter::java_util_zip_CRC32_update |
|
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1636 : entry_point = ig_this->generate_CRC32_update_entry(); break; |
|
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1637 case Interpreter::java_util_zip_CRC32_updateBytes |
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1638 : // fall thru |
|
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1639 case Interpreter::java_util_zip_CRC32_updateByteBuffer |
|
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1640 : entry_point = ig_this->generate_CRC32_updateBytes_entry(kind); break; |
|
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1641 default: |
|
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1642 fatal(err_msg("unexpected method kind: %d", kind)); |
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1643 break; |
| 0 | 1644 } |
| 1645 | |
| 1646 if (entry_point) return entry_point; | |
| 1647 | |
|
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1648 return ig_this->generate_normal_entry(synchronized); |
| 0 | 1649 |
| 1650 } | |
| 1651 | |
|
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1652 // These should never be compiled since the interpreter will prefer |
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1653 // the compiled version to the intrinsic version. |
|
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1654 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
|
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1655 switch (method_kind(m)) { |
|
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1656 case Interpreter::java_lang_math_sin : // fall thru |
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1657 case Interpreter::java_lang_math_cos : // fall thru |
|
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1658 case Interpreter::java_lang_math_tan : // fall thru |
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1659 case Interpreter::java_lang_math_abs : // fall thru |
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1660 case Interpreter::java_lang_math_log : // fall thru |
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1661 case Interpreter::java_lang_math_log10 : // fall thru |
|
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1662 case Interpreter::java_lang_math_sqrt : // fall thru |
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1663 case Interpreter::java_lang_math_pow : // fall thru |
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1664 case Interpreter::java_lang_math_exp : |
|
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1665 return false; |
|
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1666 default: |
|
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1667 return true; |
|
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|
1668 } |
|
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|
1669 } |
|
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|
1670 |
| 0 | 1671 // How much stack a method activation needs in words. |
|
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1672 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
| 0 | 1673 |
| 1674 const int stub_code = 4; // see generate_call_stub | |
| 1675 // Save space for one monitor to get into the interpreted method in case | |
| 1676 // the method is synchronized | |
| 1677 int monitor_size = method->is_synchronized() ? | |
| 1678 1*frame::interpreter_frame_monitor_size() : 0; | |
| 1679 | |
| 1680 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
| 1681 // be sure to change this if you add/subtract anything to/from the overhead area | |
| 1682 const int overhead_size = -frame::interpreter_frame_initial_sp_offset; | |
| 1683 | |
|
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|
1684 const int method_stack = (method->max_locals() + method->max_stack()) * |
| 1506 | 1685 Interpreter::stackElementWords; |
| 0 | 1686 return overhead_size + method_stack + stub_code; |
| 1687 } | |
| 1688 | |
| 1689 //------------------------------------------------------------------------------------------------------------------------ | |
| 1690 // Exceptions | |
| 1691 | |
| 1692 void TemplateInterpreterGenerator::generate_throw_exception() { | |
| 1693 // Entry point in previous activation (i.e., if the caller was interpreted) | |
| 1694 Interpreter::_rethrow_exception_entry = __ pc(); | |
| 1295 | 1695 const Register thread = rcx; |
| 0 | 1696 |
| 1697 // Restore sp to interpreter_frame_last_sp even though we are going | |
| 1698 // to empty the expression stack for the exception processing. | |
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1699 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 1700 // rax,: exception |
| 1701 // rdx: return address/pc that threw exception | |
| 1702 __ restore_bcp(); // rsi points to call/send | |
| 1703 __ restore_locals(); | |
| 1704 | |
| 1705 // Entry point for exceptions thrown within interpreter code | |
| 1706 Interpreter::_throw_exception_entry = __ pc(); | |
| 1707 // expression stack is undefined here | |
| 1708 // rax,: exception | |
| 1709 // rsi: exception bcp | |
| 1710 __ verify_oop(rax); | |
| 1711 | |
| 1712 // expression stack must be empty before entering the VM in case of an exception | |
| 1713 __ empty_expression_stack(); | |
| 1714 __ empty_FPU_stack(); | |
| 1715 // find exception handler address and preserve exception oop | |
| 1716 __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); | |
| 1717 // rax,: exception handler entry point | |
| 1718 // rdx: preserved exception oop | |
| 1719 // rsi: bcp for exception handler | |
| 1720 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
| 1721 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
| 1722 | |
| 1723 // If the exception is not handled in the current frame the frame is removed and | |
| 1724 // the exception is rethrown (i.e. exception continuation is _rethrow_exception). | |
| 1725 // | |
| 1726 // Note: At this point the bci is still the bxi for the instruction which caused | |
| 1727 // the exception and the expression stack is empty. Thus, for any VM calls | |
| 1728 // at this point, GC will find a legal oop map (with empty expression stack). | |
| 1729 | |
| 1730 // In current activation | |
| 1731 // tos: exception | |
| 1732 // rsi: exception bcp | |
| 1733 | |
| 1734 // | |
| 1735 // JVMTI PopFrame support | |
| 1736 // | |
| 1737 | |
| 1738 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
| 1739 __ empty_expression_stack(); | |
| 1740 __ empty_FPU_stack(); | |
| 1741 // Set the popframe_processing bit in pending_popframe_condition indicating that we are | |
| 1742 // currently handling popframe, so that call_VMs that may happen later do not trigger new | |
| 1743 // popframe handling cycles. | |
| 1295 | 1744 __ get_thread(thread); |
| 1745 __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset())); | |
| 0 | 1746 __ orl(rdx, JavaThread::popframe_processing_bit); |
| 1295 | 1747 __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx); |
| 0 | 1748 |
| 1749 { | |
| 1750 // Check to see whether we are returning to a deoptimized frame. | |
| 1751 // (The PopFrame call ensures that the caller of the popped frame is | |
| 1752 // either interpreted or compiled and deoptimizes it if compiled.) | |
| 1753 // In this case, we can't call dispatch_next() after the frame is | |
| 1754 // popped, but instead must save the incoming arguments and restore | |
| 1755 // them after deoptimization has occurred. | |
| 1756 // | |
| 1757 // Note that we don't compare the return PC against the | |
| 1758 // deoptimization blob's unpack entry because of the presence of | |
| 1759 // adapter frames in C2. | |
| 1760 Label caller_not_deoptimized; | |
| 304 | 1761 __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); |
| 0 | 1762 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); |
| 1763 __ testl(rax, rax); | |
| 1764 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
| 1765 | |
| 1766 // Compute size of arguments for saving when returning to deoptimized caller | |
| 1767 __ get_method(rax); | |
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1768 __ movptr(rax, Address(rax, Method::const_offset())); |
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1769 __ load_unsigned_short(rax, Address(rax, ConstMethod::size_of_parameters_offset())); |
| 1506 | 1770 __ shlptr(rax, Interpreter::logStackElementSize); |
| 0 | 1771 __ restore_locals(); |
| 304 | 1772 __ subptr(rdi, rax); |
| 1773 __ addptr(rdi, wordSize); | |
| 0 | 1774 // Save these arguments |
| 1295 | 1775 __ get_thread(thread); |
| 1776 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), thread, rax, rdi); | |
| 0 | 1777 |
| 1778 __ remove_activation(vtos, rdx, | |
| 1779 /* throw_monitor_exception */ false, | |
| 1780 /* install_monitor_exception */ false, | |
| 1781 /* notify_jvmdi */ false); | |
| 1782 | |
| 1783 // Inform deoptimization that it is responsible for restoring these arguments | |
| 1295 | 1784 __ get_thread(thread); |
| 1785 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); | |
| 0 | 1786 |
| 1787 // Continue in deoptimization handler | |
| 1788 __ jmp(rdx); | |
| 1789 | |
| 1790 __ bind(caller_not_deoptimized); | |
| 1791 } | |
| 1792 | |
| 1793 __ remove_activation(vtos, rdx, | |
| 1794 /* throw_monitor_exception */ false, | |
| 1795 /* install_monitor_exception */ false, | |
| 1796 /* notify_jvmdi */ false); | |
| 1797 | |
| 1798 // Finish with popframe handling | |
| 1799 // A previous I2C followed by a deoptimization might have moved the | |
| 1800 // outgoing arguments further up the stack. PopFrame expects the | |
| 1801 // mutations to those outgoing arguments to be preserved and other | |
| 1802 // constraints basically require this frame to look exactly as | |
| 1803 // though it had previously invoked an interpreted activation with | |
| 1804 // no space between the top of the expression stack (current | |
| 1805 // last_sp) and the top of stack. Rather than force deopt to | |
| 1806 // maintain this kind of invariant all the time we call a small | |
| 1807 // fixup routine to move the mutated arguments onto the top of our | |
| 1808 // expression stack if necessary. | |
| 304 | 1809 __ mov(rax, rsp); |
| 1810 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
| 1295 | 1811 __ get_thread(thread); |
| 0 | 1812 // PC must point into interpreter here |
| 1295 | 1813 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); |
| 1814 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx); | |
| 1815 __ get_thread(thread); | |
| 1816 __ reset_last_Java_frame(thread, true, true); | |
| 0 | 1817 // Restore the last_sp and null it out |
| 304 | 1818 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
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1819 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 1820 |
| 1821 __ restore_bcp(); | |
| 1822 __ restore_locals(); | |
| 1823 // The method data pointer was incremented already during | |
| 1824 // call profiling. We have to restore the mdp for the current bcp. | |
| 1825 if (ProfileInterpreter) { | |
| 1826 __ set_method_data_pointer_for_bcp(); | |
| 1827 } | |
| 1828 | |
| 1829 // Clear the popframe condition flag | |
| 1295 | 1830 __ get_thread(thread); |
| 1831 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); | |
| 0 | 1832 |
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1833 #if INCLUDE_JVMTI |
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1834 if (EnableInvokeDynamic) { |
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1835 Label L_done; |
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1836 const Register local0 = rdi; |
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1837 |
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1838 __ cmpb(Address(rsi, 0), Bytecodes::_invokestatic); |
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1839 __ jcc(Assembler::notEqual, L_done); |
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1840 |
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1841 // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call. |
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1842 // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL. |
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1843 |
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1844 __ get_method(rdx); |
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1845 __ movptr(rax, Address(local0, 0)); |
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1846 __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), rax, rdx, rsi); |
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1847 |
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1848 __ testptr(rax, rax); |
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1849 __ jcc(Assembler::zero, L_done); |
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1850 |
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1851 __ movptr(Address(rbx, 0), rax); |
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1852 __ bind(L_done); |
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1853 } |
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1854 #endif // INCLUDE_JVMTI |
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1855 |
| 0 | 1856 __ dispatch_next(vtos); |
| 1857 // end of PopFrame support | |
| 1858 | |
| 1859 Interpreter::_remove_activation_entry = __ pc(); | |
| 1860 | |
| 1861 // preserve exception over this code sequence | |
| 1862 __ pop_ptr(rax); | |
| 1295 | 1863 __ get_thread(thread); |
| 1864 __ movptr(Address(thread, JavaThread::vm_result_offset()), rax); | |
| 0 | 1865 // remove the activation (without doing throws on illegalMonitorExceptions) |
| 1866 __ remove_activation(vtos, rdx, false, true, false); | |
| 1867 // restore exception | |
| 1295 | 1868 __ get_thread(thread); |
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1869 __ get_vm_result(rax, thread); |
| 0 | 1870 |
| 1871 // Inbetween activations - previous activation type unknown yet | |
| 1872 // compute continuation point - the continuation point expects | |
| 1873 // the following registers set up: | |
| 1874 // | |
| 1295 | 1875 // rax: exception |
| 0 | 1876 // rdx: return address/pc that threw exception |
| 1877 // rsp: expression stack of caller | |
| 1295 | 1878 // rbp: rbp, of caller |
| 304 | 1879 __ push(rax); // save exception |
| 1880 __ push(rdx); // save return address | |
| 1295 | 1881 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, rdx); |
| 304 | 1882 __ mov(rbx, rax); // save exception handler |
| 1883 __ pop(rdx); // restore return address | |
| 1884 __ pop(rax); // restore exception | |
| 0 | 1885 // Note that an "issuing PC" is actually the next PC after the call |
| 1886 __ jmp(rbx); // jump to exception handler of caller | |
| 1887 } | |
| 1888 | |
| 1889 | |
| 1890 // | |
| 1891 // JVMTI ForceEarlyReturn support | |
| 1892 // | |
| 1893 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
| 1894 address entry = __ pc(); | |
| 1295 | 1895 const Register thread = rcx; |
| 0 | 1896 |
| 1897 __ restore_bcp(); | |
| 1898 __ restore_locals(); | |
| 1899 __ empty_expression_stack(); | |
| 1900 __ empty_FPU_stack(); | |
| 1901 __ load_earlyret_value(state); | |
| 1902 | |
| 1295 | 1903 __ get_thread(thread); |
| 1904 __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset())); | |
| 0 | 1905 const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); |
| 1906 | |
| 1907 // Clear the earlyret state | |
| 1908 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
| 1909 | |
| 1910 __ remove_activation(state, rsi, | |
| 1911 false, /* throw_monitor_exception */ | |
| 1912 false, /* install_monitor_exception */ | |
| 1913 true); /* notify_jvmdi */ | |
| 1914 __ jmp(rsi); | |
| 1915 return entry; | |
| 1916 } // end of ForceEarlyReturn support | |
| 1917 | |
| 1918 | |
| 1919 //------------------------------------------------------------------------------------------------------------------------ | |
| 1920 // Helper for vtos entry point generation | |
| 1921 | |
| 1922 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) { | |
| 1923 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
| 1924 Label L; | |
| 1925 fep = __ pc(); __ push(ftos); __ jmp(L); | |
| 1926 dep = __ pc(); __ push(dtos); __ jmp(L); | |
| 1927 lep = __ pc(); __ push(ltos); __ jmp(L); | |
| 1928 aep = __ pc(); __ push(atos); __ jmp(L); | |
| 1929 bep = cep = sep = // fall through | |
| 1930 iep = __ pc(); __ push(itos); // fall through | |
| 1931 vep = __ pc(); __ bind(L); // fall through | |
| 1932 generate_and_dispatch(t); | |
| 1933 } | |
| 1934 | |
| 1935 //------------------------------------------------------------------------------------------------------------------------ | |
| 1936 // Generation of individual instructions | |
| 1937 | |
| 1938 // helpers for generate_and_dispatch | |
| 1939 | |
| 1940 | |
| 1941 | |
| 1942 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
| 1943 : TemplateInterpreterGenerator(code) { | |
| 1944 generate_all(); // down here so it can be "virtual" | |
| 1945 } | |
| 1946 | |
| 1947 //------------------------------------------------------------------------------------------------------------------------ | |
| 1948 | |
| 1949 // Non-product code | |
| 1950 #ifndef PRODUCT | |
| 1951 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
| 1952 address entry = __ pc(); | |
| 1953 | |
| 1954 // prepare expression stack | |
| 304 | 1955 __ pop(rcx); // pop return address so expression stack is 'pure' |
| 0 | 1956 __ push(state); // save tosca |
| 1957 | |
| 1958 // pass tosca registers as arguments & call tracer | |
| 1959 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); | |
| 304 | 1960 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) |
| 0 | 1961 __ pop(state); // restore tosca |
| 1962 | |
| 1963 // return | |
| 1964 __ jmp(rcx); | |
| 1965 | |
| 1966 return entry; | |
| 1967 } | |
| 1968 | |
| 1969 | |
| 1970 void TemplateInterpreterGenerator::count_bytecode() { | |
| 304 | 1971 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); |
| 0 | 1972 } |
| 1973 | |
| 1974 | |
| 1975 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
| 304 | 1976 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); |
| 0 | 1977 } |
| 1978 | |
| 1979 | |
| 1980 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
| 1981 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
| 1982 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
| 1983 __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); | |
| 1984 ExternalAddress table((address) BytecodePairHistogram::_counters); | |
| 1985 Address index(noreg, rbx, Address::times_4); | |
| 304 | 1986 __ incrementl(ArrayAddress(table, index)); |
| 0 | 1987 } |
| 1988 | |
| 1989 | |
| 1990 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
| 1991 // Call a little run-time stub to avoid blow-up for each bytecode. | |
| 1992 // The run-time runtime saves the right registers, depending on | |
| 1993 // the tosca in-state for the given template. | |
| 1994 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
| 1995 "entry must have been generated"); | |
| 1996 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); | |
| 1997 } | |
| 1998 | |
| 1999 | |
| 2000 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
| 2001 Label L; | |
| 2002 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
| 2003 StopInterpreterAt); | |
| 2004 __ jcc(Assembler::notEqual, L); | |
| 2005 __ int3(); | |
| 2006 __ bind(L); | |
| 2007 } | |
| 2008 #endif // !PRODUCT | |
| 2009 #endif // CC_INTERP |