Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/templateInterpreter_x86_32.cpp @ 10105:aeaca88565e6
8010862: The Method counter fields used for profiling can be allocated lazily.
Summary: Allocate the method's profiling related metadata until they are needed.
Reviewed-by: coleenp, roland
| author | jiangli |
|---|---|
| date | Tue, 09 Apr 2013 17:17:41 -0400 |
| parents | e961c11b85fe |
| children | 47766e2d2527 |
| 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) { |
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154 TosState incoming_state = state; |
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155 address entry = __ pc(); |
| 0 | 156 |
| 157 #ifdef COMPILER2 | |
| 158 // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases | |
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159 if ((incoming_state == ftos && UseSSE < 1) || (incoming_state == dtos && UseSSE < 2)) { |
| 0 | 160 for (int i = 1; i < 8; i++) { |
| 161 __ ffree(i); | |
| 162 } | |
| 163 } else if (UseSSE < 2) { | |
| 164 __ empty_FPU_stack(); | |
| 165 } | |
| 166 #endif | |
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167 if ((incoming_state == ftos && UseSSE < 1) || (incoming_state == dtos && UseSSE < 2)) { |
| 0 | 168 __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled"); |
| 169 } else { | |
| 170 __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled"); | |
| 171 } | |
| 172 | |
| 173 // In SSE mode, interpreter returns FP results in xmm0 but they need | |
| 174 // to end up back on the FPU so it can operate on them. | |
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175 if (incoming_state == ftos && UseSSE >= 1) { |
| 304 | 176 __ subptr(rsp, wordSize); |
| 0 | 177 __ movflt(Address(rsp, 0), xmm0); |
| 178 __ fld_s(Address(rsp, 0)); | |
| 304 | 179 __ addptr(rsp, wordSize); |
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180 } else if (incoming_state == dtos && UseSSE >= 2) { |
| 304 | 181 __ subptr(rsp, 2*wordSize); |
| 0 | 182 __ movdbl(Address(rsp, 0), xmm0); |
| 183 __ fld_d(Address(rsp, 0)); | |
| 304 | 184 __ addptr(rsp, 2*wordSize); |
| 0 | 185 } |
| 186 | |
| 187 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_return_entry_for in interpreter"); | |
| 188 | |
| 189 // Restore stack bottom in case i2c adjusted stack | |
| 304 | 190 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
| 0 | 191 // and NULL it as marker that rsp is now tos until next java call |
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192 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 193 |
| 194 __ restore_bcp(); | |
| 195 __ restore_locals(); | |
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196 |
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197 Label L_got_cache, L_giant_index; |
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198 if (EnableInvokeDynamic) { |
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199 __ cmpb(Address(rsi, 0), Bytecodes::_invokedynamic); |
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200 __ jcc(Assembler::equal, L_giant_index); |
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201 } |
| 1565 | 202 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u2)); |
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203 __ bind(L_got_cache); |
| 0 | 204 __ movl(rbx, Address(rbx, rcx, |
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205 Address::times_ptr, ConstantPoolCache::base_offset() + |
| 0 | 206 ConstantPoolCacheEntry::flags_offset())); |
| 304 | 207 __ andptr(rbx, 0xFF); |
| 208 __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); | |
| 0 | 209 __ dispatch_next(state, step); |
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210 |
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211 // out of the main line of code... |
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212 if (EnableInvokeDynamic) { |
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213 __ bind(L_giant_index); |
| 1565 | 214 __ get_cache_and_index_at_bcp(rbx, rcx, 1, sizeof(u4)); |
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215 __ jmp(L_got_cache); |
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216 } |
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217 |
| 0 | 218 return entry; |
| 219 } | |
| 220 | |
| 221 | |
| 222 address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) { | |
| 223 address entry = __ pc(); | |
| 224 | |
| 225 // In SSE mode, FP results are in xmm0 | |
| 226 if (state == ftos && UseSSE > 0) { | |
| 304 | 227 __ subptr(rsp, wordSize); |
| 0 | 228 __ movflt(Address(rsp, 0), xmm0); |
| 229 __ fld_s(Address(rsp, 0)); | |
| 304 | 230 __ addptr(rsp, wordSize); |
| 0 | 231 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 232 __ subptr(rsp, 2*wordSize); |
| 0 | 233 __ movdbl(Address(rsp, 0), xmm0); |
| 234 __ fld_d(Address(rsp, 0)); | |
| 304 | 235 __ addptr(rsp, 2*wordSize); |
| 0 | 236 } |
| 237 | |
| 238 __ MacroAssembler::verify_FPU(state == ftos || state == dtos ? 1 : 0, "generate_deopt_entry_for in interpreter"); | |
| 239 | |
| 240 // The stack is not extended by deopt but we must NULL last_sp as this | |
| 241 // entry is like a "return". | |
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242 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 243 __ restore_bcp(); |
| 244 __ restore_locals(); | |
| 245 // handle exceptions | |
| 246 { Label L; | |
| 247 const Register thread = rcx; | |
| 248 __ get_thread(thread); | |
| 304 | 249 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 250 __ jcc(Assembler::zero, L); |
| 251 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
| 252 __ should_not_reach_here(); | |
| 253 __ bind(L); | |
| 254 } | |
| 255 __ dispatch_next(state, step); | |
| 256 return entry; | |
| 257 } | |
| 258 | |
| 259 | |
| 260 int AbstractInterpreter::BasicType_as_index(BasicType type) { | |
| 261 int i = 0; | |
| 262 switch (type) { | |
| 263 case T_BOOLEAN: i = 0; break; | |
| 264 case T_CHAR : i = 1; break; | |
| 265 case T_BYTE : i = 2; break; | |
| 266 case T_SHORT : i = 3; break; | |
| 267 case T_INT : // fall through | |
| 268 case T_LONG : // fall through | |
| 269 case T_VOID : i = 4; break; | |
| 270 case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE | |
| 271 case T_DOUBLE : i = 6; break; | |
| 272 case T_OBJECT : // fall through | |
| 273 case T_ARRAY : i = 7; break; | |
| 274 default : ShouldNotReachHere(); | |
| 275 } | |
| 276 assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds"); | |
| 277 return i; | |
| 278 } | |
| 279 | |
| 280 | |
| 281 address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) { | |
| 282 address entry = __ pc(); | |
| 283 switch (type) { | |
| 284 case T_BOOLEAN: __ c2bool(rax); break; | |
| 304 | 285 case T_CHAR : __ andptr(rax, 0xFFFF); break; |
| 0 | 286 case T_BYTE : __ sign_extend_byte (rax); break; |
| 287 case T_SHORT : __ sign_extend_short(rax); break; | |
| 288 case T_INT : /* nothing to do */ break; | |
| 289 case T_DOUBLE : | |
| 290 case T_FLOAT : | |
| 291 { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp(); | |
| 304 | 292 __ pop(t); // remove return address first |
| 0 | 293 // Must return a result for interpreter or compiler. In SSE |
| 294 // mode, results are returned in xmm0 and the FPU stack must | |
| 295 // be empty. | |
| 296 if (type == T_FLOAT && UseSSE >= 1) { | |
| 297 // Load ST0 | |
| 298 __ fld_d(Address(rsp, 0)); | |
| 299 // Store as float and empty fpu stack | |
| 300 __ fstp_s(Address(rsp, 0)); | |
| 301 // and reload | |
| 302 __ movflt(xmm0, Address(rsp, 0)); | |
| 303 } else if (type == T_DOUBLE && UseSSE >= 2 ) { | |
| 304 __ movdbl(xmm0, Address(rsp, 0)); | |
| 305 } else { | |
| 306 // restore ST0 | |
| 307 __ fld_d(Address(rsp, 0)); | |
| 308 } | |
| 309 // and pop the temp | |
| 304 | 310 __ addptr(rsp, 2 * wordSize); |
| 311 __ push(t); // restore return address | |
| 0 | 312 } |
| 313 break; | |
| 314 case T_OBJECT : | |
| 315 // retrieve result from frame | |
| 304 | 316 __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize)); |
| 0 | 317 // and verify it |
| 318 __ verify_oop(rax); | |
| 319 break; | |
| 320 default : ShouldNotReachHere(); | |
| 321 } | |
| 322 __ ret(0); // return from result handler | |
| 323 return entry; | |
| 324 } | |
| 325 | |
| 326 address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) { | |
| 327 address entry = __ pc(); | |
| 328 __ push(state); | |
| 329 __ call_VM(noreg, runtime_entry); | |
| 330 __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos)); | |
| 331 return entry; | |
| 332 } | |
| 333 | |
| 334 | |
| 335 // Helpers for commoning out cases in the various type of method entries. | |
| 336 // | |
| 337 | |
| 338 // increment invocation count & check for overflow | |
| 339 // | |
| 340 // Note: checking for negative value instead of overflow | |
| 341 // so we have a 'sticky' overflow test | |
| 342 // | |
| 343 // rbx,: method | |
| 344 // rcx: invocation counter | |
| 345 // | |
| 346 void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) { | |
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347 Label done; |
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348 // Note: In tiered we increment either counters in MethodCounters* or in MDO |
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349 // depending if we're profiling or not. |
| 1783 | 350 if (TieredCompilation) { |
| 351 int increment = InvocationCounter::count_increment; | |
| 352 int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift; | |
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353 Label no_mdo; |
| 1783 | 354 if (ProfileInterpreter) { |
| 355 // Are we profiling? | |
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356 __ movptr(rax, Address(rbx, Method::method_data_offset())); |
| 1783 | 357 __ testptr(rax, rax); |
| 358 __ jccb(Assembler::zero, no_mdo); | |
| 359 // Increment counter in the MDO | |
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360 const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) + |
| 1783 | 361 in_bytes(InvocationCounter::counter_offset())); |
| 362 __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow); | |
| 363 __ jmpb(done); | |
| 364 } | |
| 365 __ bind(no_mdo); | |
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366 // Increment counter in MethodCounters |
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367 const Address invocation_counter(rax, |
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368 MethodCounters::invocation_counter_offset() + |
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369 InvocationCounter::counter_offset()); |
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370 |
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371 __ get_method_counters(rbx, rax, done); |
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372 __ increment_mask_and_jump(invocation_counter, increment, mask, |
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373 rcx, false, Assembler::zero, overflow); |
| 1783 | 374 __ bind(done); |
| 375 } else { | |
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376 const Address backedge_counter (rax, |
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377 MethodCounters::backedge_counter_offset() + |
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378 InvocationCounter::counter_offset()); |
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379 const Address invocation_counter(rax, |
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380 MethodCounters::invocation_counter_offset() + |
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381 InvocationCounter::counter_offset()); |
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382 |
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383 __ get_method_counters(rbx, rax, done); |
| 0 | 384 |
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385 if (ProfileInterpreter) { |
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386 __ incrementl(Address(rax, |
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387 MethodCounters::interpreter_invocation_counter_offset())); |
| 1783 | 388 } |
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389 |
| 1783 | 390 // Update standard invocation counters |
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391 __ movl(rcx, invocation_counter); |
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392 __ incrementl(rcx, InvocationCounter::count_increment); |
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393 __ movl(invocation_counter, rcx); // save invocation count |
| 1783 | 394 |
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395 __ movl(rax, backedge_counter); // load backedge counter |
| 1783 | 396 __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits |
| 397 | |
| 398 __ addl(rcx, rax); // add both counters | |
| 0 | 399 |
| 1783 | 400 // profile_method is non-null only for interpreted method so |
| 401 // profile_method != NULL == !native_call | |
| 402 // BytecodeInterpreter only calls for native so code is elided. | |
| 403 | |
| 404 if (ProfileInterpreter && profile_method != NULL) { | |
| 405 // Test to see if we should create a method data oop | |
| 406 __ cmp32(rcx, | |
| 407 ExternalAddress((address)&InvocationCounter::InterpreterProfileLimit)); | |
| 408 __ jcc(Assembler::less, *profile_method_continue); | |
| 409 | |
| 410 // if no method data exists, go to profile_method | |
| 411 __ test_method_data_pointer(rax, *profile_method); | |
| 412 } | |
| 413 | |
| 0 | 414 __ cmp32(rcx, |
| 1783 | 415 ExternalAddress((address)&InvocationCounter::InterpreterInvocationLimit)); |
| 416 __ jcc(Assembler::aboveEqual, *overflow); | |
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417 __ bind(done); |
| 0 | 418 } |
| 419 } | |
| 420 | |
| 421 void InterpreterGenerator::generate_counter_overflow(Label* do_continue) { | |
| 422 | |
| 423 // Asm interpreter on entry | |
| 424 // rdi - locals | |
| 425 // rsi - bcp | |
| 426 // rbx, - method | |
| 427 // rdx - cpool | |
| 428 // rbp, - interpreter frame | |
| 429 | |
| 430 // C++ interpreter on entry | |
| 431 // rsi - new interpreter state pointer | |
| 432 // rbp - interpreter frame pointer | |
| 433 // rbx - method | |
| 434 | |
| 435 // On return (i.e. jump to entry_point) [ back to invocation of interpreter ] | |
| 436 // rbx, - method | |
| 437 // rcx - rcvr (assuming there is one) | |
| 438 // top of stack return address of interpreter caller | |
| 439 // rsp - sender_sp | |
| 440 | |
| 441 // C++ interpreter only | |
| 442 // rsi - previous interpreter state pointer | |
| 443 | |
| 444 // InterpreterRuntime::frequency_counter_overflow takes one argument | |
| 445 // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp). | |
| 446 // The call returns the address of the verified entry point for the method or NULL | |
| 447 // if the compilation did not complete (either went background or bailed out). | |
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448 __ movptr(rax, (intptr_t)false); |
| 0 | 449 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax); |
| 450 | |
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451 __ movptr(rbx, Address(rbp, method_offset)); // restore Method* |
| 0 | 452 |
| 453 // Preserve invariant that rsi/rdi contain bcp/locals of sender frame | |
| 454 // and jump to the interpreted entry. | |
| 455 __ jmp(*do_continue, relocInfo::none); | |
| 456 | |
| 457 } | |
| 458 | |
| 459 void InterpreterGenerator::generate_stack_overflow_check(void) { | |
| 460 // see if we've got enough room on the stack for locals plus overhead. | |
| 461 // the expression stack grows down incrementally, so the normal guard | |
| 462 // page mechanism will work for that. | |
| 463 // | |
| 464 // Registers live on entry: | |
| 465 // | |
| 466 // Asm interpreter | |
| 467 // rdx: number of additional locals this frame needs (what we must check) | |
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468 // rbx,: Method* |
| 0 | 469 |
| 470 // destroyed on exit | |
| 471 // rax, | |
| 472 | |
| 473 // NOTE: since the additional locals are also always pushed (wasn't obvious in | |
| 474 // generate_method_entry) so the guard should work for them too. | |
| 475 // | |
| 476 | |
| 477 // monitor entry size: see picture of stack set (generate_method_entry) and frame_x86.hpp | |
| 478 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 479 | |
| 480 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
| 481 // be sure to change this if you add/subtract anything to/from the overhead area | |
| 482 const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size; | |
| 483 | |
| 484 const int page_size = os::vm_page_size(); | |
| 485 | |
| 486 Label after_frame_check; | |
| 487 | |
| 488 // see if the frame is greater than one page in size. If so, | |
| 489 // then we need to verify there is enough stack space remaining | |
| 490 // for the additional locals. | |
| 1506 | 491 __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize); |
| 0 | 492 __ jcc(Assembler::belowEqual, after_frame_check); |
| 493 | |
| 494 // compute rsp as if this were going to be the last frame on | |
| 495 // the stack before the red zone | |
| 496 | |
| 497 Label after_frame_check_pop; | |
| 498 | |
| 304 | 499 __ push(rsi); |
| 0 | 500 |
| 501 const Register thread = rsi; | |
| 502 | |
| 503 __ get_thread(thread); | |
| 504 | |
| 505 const Address stack_base(thread, Thread::stack_base_offset()); | |
| 506 const Address stack_size(thread, Thread::stack_size_offset()); | |
| 507 | |
| 508 // locals + overhead, in bytes | |
| 304 | 509 __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size)); |
| 0 | 510 |
| 511 #ifdef ASSERT | |
| 512 Label stack_base_okay, stack_size_okay; | |
| 513 // verify that thread stack base is non-zero | |
| 304 | 514 __ cmpptr(stack_base, (int32_t)NULL_WORD); |
| 0 | 515 __ jcc(Assembler::notEqual, stack_base_okay); |
| 516 __ stop("stack base is zero"); | |
| 517 __ bind(stack_base_okay); | |
| 518 // verify that thread stack size is non-zero | |
| 304 | 519 __ cmpptr(stack_size, 0); |
| 0 | 520 __ jcc(Assembler::notEqual, stack_size_okay); |
| 521 __ stop("stack size is zero"); | |
| 522 __ bind(stack_size_okay); | |
| 523 #endif | |
| 524 | |
| 525 // Add stack base to locals and subtract stack size | |
| 304 | 526 __ addptr(rax, stack_base); |
| 527 __ subptr(rax, stack_size); | |
| 0 | 528 |
| 529 // Use the maximum number of pages we might bang. | |
| 530 const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages : | |
| 531 (StackRedPages+StackYellowPages); | |
| 304 | 532 __ addptr(rax, max_pages * page_size); |
| 0 | 533 |
| 534 // check against the current stack bottom | |
| 304 | 535 __ cmpptr(rsp, rax); |
| 0 | 536 __ jcc(Assembler::above, after_frame_check_pop); |
| 537 | |
| 304 | 538 __ pop(rsi); // get saved bcp / (c++ prev state ). |
| 0 | 539 |
| 4743 | 540 // Restore sender's sp as SP. This is necessary if the sender's |
| 541 // frame is an extended compiled frame (see gen_c2i_adapter()) | |
| 542 // and safer anyway in case of JSR292 adaptations. | |
| 0 | 543 |
| 4743 | 544 __ pop(rax); // return address must be moved if SP is changed |
| 545 __ mov(rsp, rsi); | |
| 546 __ push(rax); | |
| 547 | |
| 548 // Note: the restored frame is not necessarily interpreted. | |
| 549 // Use the shared runtime version of the StackOverflowError. | |
| 550 assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated"); | |
| 551 __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry())); | |
| 0 | 552 // all done with frame size check |
| 553 __ bind(after_frame_check_pop); | |
| 304 | 554 __ pop(rsi); |
| 0 | 555 |
| 556 __ bind(after_frame_check); | |
| 557 } | |
| 558 | |
| 559 // Allocate monitor and lock method (asm interpreter) | |
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560 // rbx, - Method* |
| 0 | 561 // |
| 562 void InterpreterGenerator::lock_method(void) { | |
| 563 // synchronize method | |
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564 const Address access_flags (rbx, Method::access_flags_offset()); |
| 0 | 565 const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); |
| 566 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 567 | |
| 568 #ifdef ASSERT | |
| 569 { Label L; | |
| 570 __ movl(rax, access_flags); | |
| 571 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 572 __ jcc(Assembler::notZero, L); | |
| 573 __ stop("method doesn't need synchronization"); | |
| 574 __ bind(L); | |
| 575 } | |
| 576 #endif // ASSERT | |
| 577 // get synchronization object | |
| 578 { Label done; | |
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579 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
| 0 | 580 __ movl(rax, access_flags); |
| 581 __ testl(rax, JVM_ACC_STATIC); | |
| 304 | 582 __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case) |
| 0 | 583 __ jcc(Assembler::zero, done); |
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584 __ movptr(rax, Address(rbx, Method::const_offset())); |
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585 __ movptr(rax, Address(rax, ConstMethod::constants_offset())); |
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586 __ movptr(rax, Address(rax, ConstantPool::pool_holder_offset_in_bytes())); |
| 304 | 587 __ movptr(rax, Address(rax, mirror_offset)); |
| 0 | 588 __ bind(done); |
| 589 } | |
| 590 // add space for monitor & lock | |
| 304 | 591 __ subptr(rsp, entry_size); // add space for a monitor entry |
| 592 __ movptr(monitor_block_top, rsp); // set new monitor block top | |
| 593 __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object | |
| 594 __ mov(rdx, rsp); // object address | |
| 0 | 595 __ lock_object(rdx); |
| 596 } | |
| 597 | |
| 598 // | |
| 599 // Generate a fixed interpreter frame. This is identical setup for interpreted methods | |
| 600 // and for native methods hence the shared code. | |
| 601 | |
| 602 void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) { | |
| 603 // initialize fixed part of activation frame | |
| 304 | 604 __ push(rax); // save return address |
| 0 | 605 __ enter(); // save old & set new rbp, |
| 606 | |
| 607 | |
| 304 | 608 __ push(rsi); // set sender sp |
| 609 __ push((int32_t)NULL_WORD); // leave last_sp as null | |
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610 __ movptr(rsi, Address(rbx,Method::const_offset())); // get ConstMethod* |
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611 __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase |
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612 __ push(rbx); // save Method* |
| 0 | 613 if (ProfileInterpreter) { |
| 614 Label method_data_continue; | |
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615 __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset()))); |
| 304 | 616 __ testptr(rdx, rdx); |
| 0 | 617 __ jcc(Assembler::zero, method_data_continue); |
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618 __ addptr(rdx, in_bytes(MethodData::data_offset())); |
| 0 | 619 __ bind(method_data_continue); |
| 304 | 620 __ push(rdx); // set the mdp (method data pointer) |
| 0 | 621 } else { |
| 304 | 622 __ push(0); |
| 0 | 623 } |
| 624 | |
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625 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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626 __ movptr(rdx, Address(rdx, ConstMethod::constants_offset())); |
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627 __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes())); |
| 304 | 628 __ push(rdx); // set constant pool cache |
| 629 __ push(rdi); // set locals pointer | |
| 0 | 630 if (native_call) { |
| 304 | 631 __ push(0); // no bcp |
| 0 | 632 } else { |
| 304 | 633 __ push(rsi); // set bcp |
| 0 | 634 } |
| 304 | 635 __ push(0); // reserve word for pointer to expression stack bottom |
| 636 __ movptr(Address(rsp, 0), rsp); // set expression stack bottom | |
| 0 | 637 } |
| 638 | |
| 639 // End of helpers | |
| 640 | |
| 641 // | |
| 642 // Various method entries | |
| 643 //------------------------------------------------------------------------------------------------------------------------ | |
| 644 // | |
| 645 // | |
| 646 | |
| 647 // Call an accessor method (assuming it is resolved, otherwise drop into vanilla (slow path) entry | |
| 648 | |
| 649 address InterpreterGenerator::generate_accessor_entry(void) { | |
| 650 | |
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651 // rbx,: Method* |
| 0 | 652 // rcx: receiver (preserve for slow entry into asm interpreter) |
| 653 | |
| 654 // rsi: senderSP must preserved for slow path, set SP to it on fast path | |
| 655 | |
| 656 address entry_point = __ pc(); | |
| 657 Label xreturn_path; | |
| 658 | |
| 659 // do fastpath for resolved accessor methods | |
| 660 if (UseFastAccessorMethods) { | |
| 661 Label slow_path; | |
| 662 // If we need a safepoint check, generate full interpreter entry. | |
| 663 ExternalAddress state(SafepointSynchronize::address_of_state()); | |
| 664 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 665 SafepointSynchronize::_not_synchronized); | |
| 666 | |
| 667 __ jcc(Assembler::notEqual, slow_path); | |
| 668 // ASM/C++ Interpreter | |
| 669 // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof; parameter size = 1 | |
| 670 // Note: We can only use this code if the getfield has been resolved | |
| 671 // and if we don't have a null-pointer exception => check for | |
| 672 // these conditions first and use slow path if necessary. | |
| 673 // rbx,: method | |
| 674 // rcx: receiver | |
| 304 | 675 __ movptr(rax, Address(rsp, wordSize)); |
| 0 | 676 |
| 677 // check if local 0 != NULL and read field | |
| 304 | 678 __ testptr(rax, rax); |
| 0 | 679 __ jcc(Assembler::zero, slow_path); |
| 680 | |
| 681 // read first instruction word and extract bytecode @ 1 and index @ 2 | |
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682 __ movptr(rdx, Address(rbx, Method::const_offset())); |
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683 __ movptr(rdi, Address(rdx, ConstMethod::constants_offset())); |
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684 __ movl(rdx, Address(rdx, ConstMethod::codes_offset())); |
| 0 | 685 // Shift codes right to get the index on the right. |
| 686 // The bytecode fetched looks like <index><0xb4><0x2a> | |
| 687 __ shrl(rdx, 2*BitsPerByte); | |
| 688 __ shll(rdx, exact_log2(in_words(ConstantPoolCacheEntry::size()))); | |
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689 __ movptr(rdi, Address(rdi, ConstantPool::cache_offset_in_bytes())); |
| 0 | 690 |
| 691 // rax,: local 0 | |
| 692 // rbx,: method | |
| 693 // rcx: receiver - do not destroy since it is needed for slow path! | |
| 694 // rcx: scratch | |
| 695 // rdx: constant pool cache index | |
| 696 // rdi: constant pool cache | |
| 697 // rsi: sender sp | |
| 698 | |
| 699 // check if getfield has been resolved and read constant pool cache entry | |
| 700 // check the validity of the cache entry by testing whether _indices field | |
| 701 // contains Bytecode::_getfield in b1 byte. | |
| 702 assert(in_words(ConstantPoolCacheEntry::size()) == 4, "adjust shift below"); | |
| 703 __ movl(rcx, | |
| 704 Address(rdi, | |
| 705 rdx, | |
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706 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
| 0 | 707 __ shrl(rcx, 2*BitsPerByte); |
| 708 __ andl(rcx, 0xFF); | |
| 709 __ cmpl(rcx, Bytecodes::_getfield); | |
| 710 __ jcc(Assembler::notEqual, slow_path); | |
| 711 | |
| 712 // Note: constant pool entry is not valid before bytecode is resolved | |
| 304 | 713 __ movptr(rcx, |
| 714 Address(rdi, | |
| 715 rdx, | |
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716 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset())); |
| 0 | 717 __ movl(rdx, |
| 718 Address(rdi, | |
| 719 rdx, | |
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|
720 Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset())); |
| 0 | 721 |
| 722 Label notByte, notShort, notChar; | |
| 723 const Address field_address (rax, rcx, Address::times_1); | |
| 724 | |
| 725 // Need to differentiate between igetfield, agetfield, bgetfield etc. | |
| 726 // because they are different sizes. | |
| 727 // Use the type from the constant pool cache | |
|
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728 __ shrl(rdx, ConstantPoolCacheEntry::tos_state_shift); |
|
1d7922586cf6
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|
729 // Make sure we don't need to mask rdx after the above shift |
|
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730 ConstantPoolCacheEntry::verify_tos_state_shift(); |
| 0 | 731 __ cmpl(rdx, btos); |
| 732 __ jcc(Assembler::notEqual, notByte); | |
| 733 __ load_signed_byte(rax, field_address); | |
| 734 __ jmp(xreturn_path); | |
| 735 | |
| 736 __ bind(notByte); | |
| 737 __ cmpl(rdx, stos); | |
| 738 __ jcc(Assembler::notEqual, notShort); | |
|
622
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|
739 __ load_signed_short(rax, field_address); |
| 0 | 740 __ jmp(xreturn_path); |
| 741 | |
| 742 __ bind(notShort); | |
| 743 __ cmpl(rdx, ctos); | |
| 744 __ jcc(Assembler::notEqual, notChar); | |
|
622
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changeset
|
745 __ load_unsigned_short(rax, field_address); |
| 0 | 746 __ jmp(xreturn_path); |
| 747 | |
| 748 __ bind(notChar); | |
| 749 #ifdef ASSERT | |
| 750 Label okay; | |
| 751 __ cmpl(rdx, atos); | |
| 752 __ jcc(Assembler::equal, okay); | |
| 753 __ cmpl(rdx, itos); | |
| 754 __ jcc(Assembler::equal, okay); | |
| 755 __ stop("what type is this?"); | |
| 756 __ bind(okay); | |
| 757 #endif // ASSERT | |
| 758 // All the rest are a 32 bit wordsize | |
| 304 | 759 // This is ok for now. Since fast accessors should be going away |
| 760 __ movptr(rax, field_address); | |
| 0 | 761 |
| 762 __ bind(xreturn_path); | |
| 763 | |
| 764 // _ireturn/_areturn | |
| 304 | 765 __ pop(rdi); // get return address |
| 766 __ mov(rsp, rsi); // set sp to sender sp | |
| 0 | 767 __ jmp(rdi); |
| 768 | |
| 769 // generate a vanilla interpreter entry as the slow path | |
| 770 __ bind(slow_path); | |
| 771 | |
| 772 (void) generate_normal_entry(false); | |
| 773 return entry_point; | |
| 774 } | |
| 775 return NULL; | |
| 776 | |
| 777 } | |
| 778 | |
|
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779 // Method entry for java.lang.ref.Reference.get. |
|
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|
780 address InterpreterGenerator::generate_Reference_get_entry(void) { |
|
8001
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781 #if INCLUDE_ALL_GCS |
|
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782 // Code: _aload_0, _getfield, _areturn |
|
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|
783 // parameter size = 1 |
|
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784 // |
|
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785 // The code that gets generated by this routine is split into 2 parts: |
|
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786 // 1. The "intrinsified" code for G1 (or any SATB based GC), |
|
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787 // 2. The slow path - which is an expansion of the regular method entry. |
|
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|
788 // |
|
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789 // Notes:- |
|
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790 // * In the G1 code we do not check whether we need to block for |
|
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791 // a safepoint. If G1 is enabled then we must execute the specialized |
|
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792 // code for Reference.get (except when the Reference object is null) |
|
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793 // so that we can log the value in the referent field with an SATB |
|
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|
794 // update buffer. |
|
e1162778c1c8
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795 // If the code for the getfield template is modified so that the |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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796 // G1 pre-barrier code is executed when the current method is |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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797 // Reference.get() then going through the normal method entry |
|
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798 // will be fine. |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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799 // * The G1 code below can, however, check the receiver object (the instance |
|
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|
800 // of java.lang.Reference) and jump to the slow path if null. If the |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
801 // Reference object is null then we obviously cannot fetch the referent |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
802 // and so we don't need to call the G1 pre-barrier. Thus we can use the |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
803 // regular method entry code to generate the NPE. |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
804 // |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
805 // This code is based on generate_accessor_enty. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
806 |
|
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|
807 // rbx,: Method* |
|
3249
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|
808 // 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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|
809 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
810 // rsi: senderSP must preserved for slow path, set SP to it on fast path |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
811 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
812 address entry = __ pc(); |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
813 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
814 const int referent_offset = java_lang_ref_Reference::referent_offset; |
|
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|
815 guarantee(referent_offset > 0, "referent offset not initialized"); |
|
e1162778c1c8
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|
816 |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
817 if (UseG1GC) { |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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818 Label slow_path; |
|
e1162778c1c8
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|
819 |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
820 // Check if local 0 != NULL |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
821 // 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
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|
822 __ movptr(rax, Address(rsp, wordSize)); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
823 __ testptr(rax, rax); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
824 __ jcc(Assembler::zero, slow_path); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
825 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
826 // 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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|
827 // |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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828 // rbx: method (at this point it's scratch) |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
829 // rcx: receiver (at this point it's scratch) |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
830 // rdx: scratch |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
831 // rdi: scratch |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
832 // |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
833 // rsi: sender sp |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
834 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
835 // Preserve the sender sp in case the pre-barrier |
|
e1162778c1c8
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|
836 // calls the runtime |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
837 __ push(rsi); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
838 |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
839 // Load the value of the referent field. |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
840 const Address field_address(rax, referent_offset); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
841 __ movptr(rax, field_address); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
842 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
843 // Generate the G1 pre-barrier code to log the value of |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
844 // the referent field in an SATB buffer. |
|
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johnc
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|
845 __ get_thread(rcx); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
846 __ g1_write_barrier_pre(noreg /* obj */, |
|
e1162778c1c8
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|
847 rax /* pre_val */, |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
848 rcx /* thread */, |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
849 rbx /* tmp */, |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
850 true /* tosca_save */, |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
851 true /* expand_call */); |
|
e1162778c1c8
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|
852 |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
853 // _areturn |
|
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johnc
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|
854 __ pop(rsi); // get sender sp |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
855 __ pop(rdi); // get return address |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
856 __ mov(rsp, rsi); // set sp to sender sp |
|
e1162778c1c8
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johnc
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|
857 __ jmp(rdi); |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
858 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
859 __ bind(slow_path); |
|
e1162778c1c8
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|
860 (void) generate_normal_entry(false); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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changeset
|
861 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
862 return entry; |
|
e1162778c1c8
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johnc
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|
863 } |
|
8001
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jprovino
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7402
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|
864 #endif // INCLUDE_ALL_GCS |
|
3249
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|
865 |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
866 // If G1 is not enabled then attempt to go through the accessor entry point |
|
e1162778c1c8
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changeset
|
867 // Reference.get is an accessor |
|
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
868 return generate_accessor_entry(); |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
869 } |
|
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
870 |
| 0 | 871 // |
| 872 // Interpreter stub for calling a native method. (asm interpreter) | |
| 873 // This sets up a somewhat different looking stack for calling the native method | |
| 874 // than the typical interpreter frame setup. | |
| 875 // | |
| 876 | |
| 877 address InterpreterGenerator::generate_native_entry(bool synchronized) { | |
| 878 // determine code generation flags | |
| 879 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 880 | |
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881 // rbx,: Method* |
| 0 | 882 // rsi: sender sp |
| 883 // rsi: previous interpreter state (C++ interpreter) must preserve | |
| 884 address entry_point = __ pc(); | |
| 885 | |
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886 const Address constMethod (rbx, Method::const_offset()); |
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887 const Address access_flags (rbx, Method::access_flags_offset()); |
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888 const Address size_of_parameters(rcx, ConstMethod::size_of_parameters_offset()); |
| 0 | 889 |
| 890 // get parameter size (always needed) | |
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891 __ movptr(rcx, constMethod); |
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892 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 893 |
| 894 // native calls don't need the stack size check since they have no expression stack | |
| 895 // and the arguments are already on the stack and we only add a handful of words | |
| 896 // to the stack | |
| 897 | |
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898 // rbx,: Method* |
| 0 | 899 // rcx: size of parameters |
| 900 // rsi: sender sp | |
| 901 | |
| 304 | 902 __ pop(rax); // get return address |
| 0 | 903 // for natives the size of locals is zero |
| 904 | |
| 905 // compute beginning of parameters (rdi) | |
| 304 | 906 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
| 0 | 907 |
| 908 | |
| 909 // add 2 zero-initialized slots for native calls | |
| 910 // NULL result handler | |
| 304 | 911 __ push((int32_t)NULL_WORD); |
| 0 | 912 // NULL oop temp (mirror or jni oop result) |
| 304 | 913 __ push((int32_t)NULL_WORD); |
| 0 | 914 |
| 915 // initialize fixed part of activation frame | |
| 916 generate_fixed_frame(true); | |
| 917 | |
| 918 // make sure method is native & not abstract | |
| 919 #ifdef ASSERT | |
| 920 __ movl(rax, access_flags); | |
| 921 { | |
| 922 Label L; | |
| 923 __ testl(rax, JVM_ACC_NATIVE); | |
| 924 __ jcc(Assembler::notZero, L); | |
| 925 __ stop("tried to execute non-native method as native"); | |
| 926 __ bind(L); | |
| 927 } | |
| 928 { Label L; | |
| 929 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 930 __ jcc(Assembler::zero, L); | |
| 931 __ stop("tried to execute abstract method in interpreter"); | |
| 932 __ bind(L); | |
| 933 } | |
| 934 #endif | |
| 935 | |
| 936 // Since at this point in the method invocation the exception handler | |
| 937 // would try to exit the monitor of synchronized methods which hasn't | |
| 938 // been entered yet, we set the thread local variable | |
| 939 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 940 // check this flag. | |
| 941 | |
| 942 __ get_thread(rax); | |
| 943 const Address do_not_unlock_if_synchronized(rax, | |
| 944 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 945 __ movbool(do_not_unlock_if_synchronized, true); | |
| 946 | |
| 947 // increment invocation count & check for overflow | |
| 948 Label invocation_counter_overflow; | |
| 949 if (inc_counter) { | |
| 950 generate_counter_incr(&invocation_counter_overflow, NULL, NULL); | |
| 951 } | |
| 952 | |
| 953 Label continue_after_compile; | |
| 954 __ bind(continue_after_compile); | |
| 955 | |
| 956 bang_stack_shadow_pages(true); | |
| 957 | |
| 958 // reset the _do_not_unlock_if_synchronized flag | |
| 959 __ get_thread(rax); | |
| 960 __ movbool(do_not_unlock_if_synchronized, false); | |
| 961 | |
| 962 // check for synchronized methods | |
| 963 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 964 // so method is not locked if overflows. | |
| 965 // | |
| 966 if (synchronized) { | |
| 967 lock_method(); | |
| 968 } else { | |
| 969 // no synchronization necessary | |
| 970 #ifdef ASSERT | |
| 971 { Label L; | |
| 972 __ movl(rax, access_flags); | |
| 973 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 974 __ jcc(Assembler::zero, L); | |
| 975 __ stop("method needs synchronization"); | |
| 976 __ bind(L); | |
| 977 } | |
| 978 #endif | |
| 979 } | |
| 980 | |
| 981 // start execution | |
| 982 #ifdef ASSERT | |
| 983 { Label L; | |
| 984 const Address monitor_block_top (rbp, | |
| 985 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 986 __ movptr(rax, monitor_block_top); |
| 987 __ cmpptr(rax, rsp); | |
| 0 | 988 __ jcc(Assembler::equal, L); |
| 989 __ stop("broken stack frame setup in interpreter"); | |
| 990 __ bind(L); | |
| 991 } | |
| 992 #endif | |
| 993 | |
| 994 // jvmti/dtrace support | |
| 995 __ notify_method_entry(); | |
| 996 | |
| 997 // work registers | |
| 998 const Register method = rbx; | |
| 999 const Register thread = rdi; | |
| 1000 const Register t = rcx; | |
| 1001 | |
| 1002 // allocate space for parameters | |
| 1003 __ get_method(method); | |
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1004 __ movptr(t, Address(method, Method::const_offset())); |
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1005 __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset())); |
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1006 |
| 1506 | 1007 __ shlptr(t, Interpreter::logStackElementSize); |
| 304 | 1008 __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror |
| 1009 __ subptr(rsp, t); | |
| 1010 __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics | |
| 0 | 1011 |
| 1012 // get signature handler | |
| 1013 { Label L; | |
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1014 __ movptr(t, Address(method, Method::signature_handler_offset())); |
| 304 | 1015 __ testptr(t, t); |
| 0 | 1016 __ jcc(Assembler::notZero, L); |
| 1017 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
| 1018 __ get_method(method); | |
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1019 __ movptr(t, Address(method, Method::signature_handler_offset())); |
| 0 | 1020 __ bind(L); |
| 1021 } | |
| 1022 | |
| 1023 // call signature handler | |
| 1024 assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code"); | |
| 1025 assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code"); | |
| 1026 assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code"); | |
| 1027 // The generated handlers do not touch RBX (the method oop). | |
| 1028 // However, large signatures cannot be cached and are generated | |
| 1029 // each time here. The slow-path generator will blow RBX | |
| 1030 // sometime, so we must reload it after the call. | |
| 1031 __ call(t); | |
| 1032 __ get_method(method); // slow path call blows RBX on DevStudio 5.0 | |
| 1033 | |
| 1034 // result handler is in rax, | |
| 1035 // set result handler | |
| 304 | 1036 __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax); |
| 0 | 1037 |
| 1038 // pass mirror handle if static call | |
| 1039 { Label L; | |
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1040 const int mirror_offset = in_bytes(Klass::java_mirror_offset()); |
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1041 __ movl(t, Address(method, Method::access_flags_offset())); |
| 0 | 1042 __ testl(t, JVM_ACC_STATIC); |
| 1043 __ jcc(Assembler::zero, L); | |
| 1044 // get mirror | |
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1045 __ movptr(t, Address(method, Method:: const_offset())); |
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1046 __ movptr(t, Address(t, ConstMethod::constants_offset())); |
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1047 __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes())); |
| 304 | 1048 __ movptr(t, Address(t, mirror_offset)); |
| 0 | 1049 // copy mirror into activation frame |
| 304 | 1050 __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t); |
| 0 | 1051 // pass handle to mirror |
| 304 | 1052 __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize)); |
| 1053 __ movptr(Address(rsp, wordSize), t); | |
| 0 | 1054 __ bind(L); |
| 1055 } | |
| 1056 | |
| 1057 // get native function entry point | |
| 1058 { Label L; | |
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1059 __ movptr(rax, Address(method, Method::native_function_offset())); |
| 0 | 1060 ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry()); |
| 304 | 1061 __ cmpptr(rax, unsatisfied.addr()); |
| 0 | 1062 __ jcc(Assembler::notEqual, L); |
| 1063 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method); | |
| 1064 __ get_method(method); | |
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1065 __ movptr(rax, Address(method, Method::native_function_offset())); |
| 0 | 1066 __ bind(L); |
| 1067 } | |
| 1068 | |
| 1069 // pass JNIEnv | |
| 1070 __ get_thread(thread); | |
| 304 | 1071 __ lea(t, Address(thread, JavaThread::jni_environment_offset())); |
| 1072 __ movptr(Address(rsp, 0), t); | |
| 0 | 1073 |
| 1074 // set_last_Java_frame_before_call | |
| 1075 // It is enough that the pc() | |
| 1076 // points into the right code segment. It does not have to be the correct return pc. | |
| 1077 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); | |
| 1078 | |
| 1079 // change thread state | |
| 1080 #ifdef ASSERT | |
| 1081 { Label L; | |
| 1082 __ movl(t, Address(thread, JavaThread::thread_state_offset())); | |
| 1083 __ cmpl(t, _thread_in_Java); | |
| 1084 __ jcc(Assembler::equal, L); | |
| 1085 __ stop("Wrong thread state in native stub"); | |
| 1086 __ bind(L); | |
| 1087 } | |
| 1088 #endif | |
| 1089 | |
| 1090 // Change state to native | |
| 1091 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
| 1092 __ call(rax); | |
| 1093 | |
| 1094 // result potentially in rdx:rax or ST0 | |
| 1095 | |
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1096 // Verify or restore cpu control state after JNI call |
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1097 __ restore_cpu_control_state_after_jni(); |
| 0 | 1098 |
| 1099 // save potential result in ST(0) & rdx:rax | |
| 1100 // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 - | |
| 1101 // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers) | |
| 1102 // It is safe to do this push because state is _thread_in_native and return address will be found | |
| 1103 // via _last_native_pc and not via _last_jave_sp | |
| 1104 | |
| 1105 // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result. | |
| 1106 // If the order changes or anything else is added to the stack the code in | |
| 1107 // interpreter_frame_result will have to be changed. | |
| 1108 | |
| 1109 { Label L; | |
| 1110 Label push_double; | |
| 1111 ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT)); | |
| 1112 ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE)); | |
| 1113 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
| 1114 float_handler.addr()); | |
| 1115 __ jcc(Assembler::equal, push_double); | |
| 1116 __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize), | |
| 1117 double_handler.addr()); | |
| 1118 __ jcc(Assembler::notEqual, L); | |
| 1119 __ bind(push_double); | |
| 1120 __ push(dtos); | |
| 1121 __ bind(L); | |
| 1122 } | |
| 1123 __ push(ltos); | |
| 1124 | |
| 1125 // change thread state | |
| 1126 __ get_thread(thread); | |
| 1127 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
| 1128 if(os::is_MP()) { | |
| 1129 if (UseMembar) { | |
| 304 | 1130 // Force this write out before the read below |
| 1131 __ membar(Assembler::Membar_mask_bits( | |
| 1132 Assembler::LoadLoad | Assembler::LoadStore | | |
| 1133 Assembler::StoreLoad | Assembler::StoreStore)); | |
| 0 | 1134 } else { |
| 1135 // Write serialization page so VM thread can do a pseudo remote membar. | |
| 1136 // We use the current thread pointer to calculate a thread specific | |
| 1137 // offset to write to within the page. This minimizes bus traffic | |
| 1138 // due to cache line collision. | |
| 1139 __ serialize_memory(thread, rcx); | |
| 1140 } | |
| 1141 } | |
| 1142 | |
| 1143 if (AlwaysRestoreFPU) { | |
| 1144 // Make sure the control word is correct. | |
| 1145 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
| 1146 } | |
| 1147 | |
| 1148 // check for safepoint operation in progress and/or pending suspend requests | |
| 1149 { Label Continue; | |
| 1150 | |
| 1151 __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()), | |
| 1152 SafepointSynchronize::_not_synchronized); | |
| 1153 | |
| 1154 Label L; | |
| 1155 __ jcc(Assembler::notEqual, L); | |
| 1156 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
| 1157 __ jcc(Assembler::equal, Continue); | |
| 1158 __ bind(L); | |
| 1159 | |
| 1160 // Don't use call_VM as it will see a possible pending exception and forward it | |
| 1161 // and never return here preventing us from clearing _last_native_pc down below. | |
| 1162 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
| 1163 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
| 1164 // by hand. | |
| 1165 // | |
| 304 | 1166 __ push(thread); |
| 0 | 1167 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
| 1168 JavaThread::check_special_condition_for_native_trans))); | |
| 1169 __ increment(rsp, wordSize); | |
| 1170 __ get_thread(thread); | |
| 1171 | |
| 1172 __ bind(Continue); | |
| 1173 } | |
| 1174 | |
| 1175 // change thread state | |
| 1176 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
| 1177 | |
| 1178 __ reset_last_Java_frame(thread, true, true); | |
| 1179 | |
| 1180 // reset handle block | |
| 304 | 1181 __ movptr(t, Address(thread, JavaThread::active_handles_offset())); |
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1182 __ movptr(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
| 0 | 1183 |
| 1184 // If result was an oop then unbox and save it in the frame | |
| 1185 { Label L; | |
| 1186 Label no_oop, store_result; | |
| 1187 ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT)); | |
| 1188 __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), | |
| 1189 handler.addr()); | |
| 1190 __ jcc(Assembler::notEqual, no_oop); | |
| 304 | 1191 __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD); |
| 0 | 1192 __ pop(ltos); |
| 304 | 1193 __ testptr(rax, rax); |
| 0 | 1194 __ jcc(Assembler::zero, store_result); |
| 1195 // unbox | |
| 304 | 1196 __ movptr(rax, Address(rax, 0)); |
| 0 | 1197 __ bind(store_result); |
| 304 | 1198 __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax); |
| 0 | 1199 // keep stack depth as expected by pushing oop which will eventually be discarded |
| 1200 __ push(ltos); | |
| 1201 __ bind(no_oop); | |
| 1202 } | |
| 1203 | |
| 1204 { | |
| 1205 Label no_reguard; | |
| 1206 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
| 1207 __ jcc(Assembler::notEqual, no_reguard); | |
| 1208 | |
| 304 | 1209 __ pusha(); |
| 0 | 1210 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); |
| 304 | 1211 __ popa(); |
| 0 | 1212 |
| 1213 __ bind(no_reguard); | |
| 1214 } | |
| 1215 | |
| 1216 // restore rsi to have legal interpreter frame, | |
| 1217 // i.e., bci == 0 <=> rsi == code_base() | |
| 1218 // Can't call_VM until bcp is within reasonable. | |
| 1219 __ get_method(method); // method is junk from thread_in_native to now. | |
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1220 __ movptr(rsi, Address(method,Method::const_offset())); // get ConstMethod* |
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1221 __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase |
| 0 | 1222 |
| 1223 // handle exceptions (exception handling will handle unlocking!) | |
| 1224 { Label L; | |
| 304 | 1225 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
| 0 | 1226 __ jcc(Assembler::zero, L); |
| 1227 // Note: At some point we may want to unify this with the code used in call_VM_base(); | |
| 1228 // i.e., we should use the StubRoutines::forward_exception code. For now this | |
| 1229 // doesn't work here because the rsp is not correctly set at this point. | |
| 1230 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception)); | |
| 1231 __ should_not_reach_here(); | |
| 1232 __ bind(L); | |
| 1233 } | |
| 1234 | |
| 1235 // do unlocking if necessary | |
| 1236 { Label L; | |
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1237 __ movl(t, Address(method, Method::access_flags_offset())); |
| 0 | 1238 __ testl(t, JVM_ACC_SYNCHRONIZED); |
| 1239 __ jcc(Assembler::zero, L); | |
| 1240 // the code below should be shared with interpreter macro assembler implementation | |
| 1241 { Label unlock; | |
| 1242 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 1243 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 1244 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
| 1245 | |
| 304 | 1246 __ lea(rdx, monitor); // address of first monitor |
| 0 | 1247 |
| 304 | 1248 __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
| 1249 __ testptr(t, t); | |
| 0 | 1250 __ jcc(Assembler::notZero, unlock); |
| 1251 | |
| 1252 // Entry already unlocked, need to throw exception | |
| 1253 __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 1254 __ should_not_reach_here(); | |
| 1255 | |
| 1256 __ bind(unlock); | |
| 1257 __ unlock_object(rdx); | |
| 1258 } | |
| 1259 __ bind(L); | |
| 1260 } | |
| 1261 | |
| 1262 // jvmti/dtrace support | |
| 1263 // Note: This must happen _after_ handling/throwing any exceptions since | |
| 1264 // the exception handler code notifies the runtime of method exits | |
| 1265 // too. If this happens before, method entry/exit notifications are | |
| 1266 // not properly paired (was bug - gri 11/22/99). | |
| 1267 __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI); | |
| 1268 | |
| 1269 // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result | |
| 1270 __ pop(ltos); | |
| 304 | 1271 __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize)); |
| 0 | 1272 __ call(t); |
| 1273 | |
| 1274 // remove activation | |
| 304 | 1275 __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 1276 __ leave(); // remove frame anchor |
| 304 | 1277 __ pop(rdi); // get return address |
| 1278 __ mov(rsp, t); // set sp to sender sp | |
| 0 | 1279 __ jmp(rdi); |
| 1280 | |
| 1281 if (inc_counter) { | |
| 1282 // Handle overflow of counter and compile method | |
| 1283 __ bind(invocation_counter_overflow); | |
| 1284 generate_counter_overflow(&continue_after_compile); | |
| 1285 } | |
| 1286 | |
| 1287 return entry_point; | |
| 1288 } | |
| 1289 | |
| 1290 // | |
| 1291 // Generic interpreted method entry to (asm) interpreter | |
| 1292 // | |
| 1293 address InterpreterGenerator::generate_normal_entry(bool synchronized) { | |
| 1294 // determine code generation flags | |
| 1295 bool inc_counter = UseCompiler || CountCompiledCalls; | |
| 1296 | |
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1297 // rbx,: Method* |
| 0 | 1298 // rsi: sender sp |
| 1299 address entry_point = __ pc(); | |
| 1300 | |
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1301 const Address constMethod (rbx, Method::const_offset()); |
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1302 const Address access_flags (rbx, Method::access_flags_offset()); |
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1303 const Address size_of_parameters(rdx, ConstMethod::size_of_parameters_offset()); |
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1304 const Address size_of_locals (rdx, ConstMethod::size_of_locals_offset()); |
| 0 | 1305 |
| 1306 // get parameter size (always needed) | |
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1307 __ movptr(rdx, constMethod); |
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1308 __ load_unsigned_short(rcx, size_of_parameters); |
| 0 | 1309 |
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1310 // rbx,: Method* |
| 0 | 1311 // rcx: size of parameters |
| 1312 | |
| 1313 // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i ) | |
| 1314 | |
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1315 __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words |
| 0 | 1316 __ subl(rdx, rcx); // rdx = no. of additional locals |
| 1317 | |
| 1318 // see if we've got enough room on the stack for locals plus overhead. | |
| 1319 generate_stack_overflow_check(); | |
| 1320 | |
| 1321 // get return address | |
| 304 | 1322 __ pop(rax); |
| 0 | 1323 |
| 1324 // compute beginning of parameters (rdi) | |
| 304 | 1325 __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize)); |
| 0 | 1326 |
| 1327 // rdx - # of additional locals | |
| 1328 // allocate space for locals | |
| 1329 // explicitly initialize locals | |
| 1330 { | |
| 1331 Label exit, loop; | |
| 1332 __ testl(rdx, rdx); | |
| 1333 __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0 | |
| 1334 __ bind(loop); | |
| 304 | 1335 __ push((int32_t)NULL_WORD); // initialize local variables |
| 0 | 1336 __ decrement(rdx); // until everything initialized |
| 1337 __ jcc(Assembler::greater, loop); | |
| 1338 __ bind(exit); | |
| 1339 } | |
| 1340 | |
| 1341 // initialize fixed part of activation frame | |
| 1342 generate_fixed_frame(false); | |
| 1343 | |
| 1344 // make sure method is not native & not abstract | |
| 1345 #ifdef ASSERT | |
| 1346 __ movl(rax, access_flags); | |
| 1347 { | |
| 1348 Label L; | |
| 1349 __ testl(rax, JVM_ACC_NATIVE); | |
| 1350 __ jcc(Assembler::zero, L); | |
| 1351 __ stop("tried to execute native method as non-native"); | |
| 1352 __ bind(L); | |
| 1353 } | |
| 1354 { Label L; | |
| 1355 __ testl(rax, JVM_ACC_ABSTRACT); | |
| 1356 __ jcc(Assembler::zero, L); | |
| 1357 __ stop("tried to execute abstract method in interpreter"); | |
| 1358 __ bind(L); | |
| 1359 } | |
| 1360 #endif | |
| 1361 | |
| 1362 // Since at this point in the method invocation the exception handler | |
| 1363 // would try to exit the monitor of synchronized methods which hasn't | |
| 1364 // been entered yet, we set the thread local variable | |
| 1365 // _do_not_unlock_if_synchronized to true. The remove_activation will | |
| 1366 // check this flag. | |
| 1367 | |
| 1368 __ get_thread(rax); | |
| 1369 const Address do_not_unlock_if_synchronized(rax, | |
| 1370 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 1371 __ movbool(do_not_unlock_if_synchronized, true); | |
| 1372 | |
| 1373 // increment invocation count & check for overflow | |
| 1374 Label invocation_counter_overflow; | |
| 1375 Label profile_method; | |
| 1376 Label profile_method_continue; | |
| 1377 if (inc_counter) { | |
| 1378 generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue); | |
| 1379 if (ProfileInterpreter) { | |
| 1380 __ bind(profile_method_continue); | |
| 1381 } | |
| 1382 } | |
| 1383 Label continue_after_compile; | |
| 1384 __ bind(continue_after_compile); | |
| 1385 | |
| 1386 bang_stack_shadow_pages(false); | |
| 1387 | |
| 1388 // reset the _do_not_unlock_if_synchronized flag | |
| 1389 __ get_thread(rax); | |
| 1390 __ movbool(do_not_unlock_if_synchronized, false); | |
| 1391 | |
| 1392 // check for synchronized methods | |
| 1393 // Must happen AFTER invocation_counter check and stack overflow check, | |
| 1394 // so method is not locked if overflows. | |
| 1395 // | |
| 1396 if (synchronized) { | |
| 1397 // Allocate monitor and lock method | |
| 1398 lock_method(); | |
| 1399 } else { | |
| 1400 // no synchronization necessary | |
| 1401 #ifdef ASSERT | |
| 1402 { Label L; | |
| 1403 __ movl(rax, access_flags); | |
| 1404 __ testl(rax, JVM_ACC_SYNCHRONIZED); | |
| 1405 __ jcc(Assembler::zero, L); | |
| 1406 __ stop("method needs synchronization"); | |
| 1407 __ bind(L); | |
| 1408 } | |
| 1409 #endif | |
| 1410 } | |
| 1411 | |
| 1412 // start execution | |
| 1413 #ifdef ASSERT | |
| 1414 { Label L; | |
| 1415 const Address monitor_block_top (rbp, | |
| 1416 frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 304 | 1417 __ movptr(rax, monitor_block_top); |
| 1418 __ cmpptr(rax, rsp); | |
| 0 | 1419 __ jcc(Assembler::equal, L); |
| 1420 __ stop("broken stack frame setup in interpreter"); | |
| 1421 __ bind(L); | |
| 1422 } | |
| 1423 #endif | |
| 1424 | |
| 1425 // jvmti support | |
| 1426 __ notify_method_entry(); | |
| 1427 | |
| 1428 __ dispatch_next(vtos); | |
| 1429 | |
| 1430 // invocation counter overflow | |
| 1431 if (inc_counter) { | |
| 1432 if (ProfileInterpreter) { | |
| 1433 // We have decided to profile this method in the interpreter | |
| 1434 __ bind(profile_method); | |
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1435 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1436 __ set_method_data_pointer_for_bcp(); |
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1437 __ get_method(rbx); |
| 0 | 1438 __ jmp(profile_method_continue); |
| 1439 } | |
| 1440 // Handle overflow of counter and compile method | |
| 1441 __ bind(invocation_counter_overflow); | |
| 1442 generate_counter_overflow(&continue_after_compile); | |
| 1443 } | |
| 1444 | |
| 1445 return entry_point; | |
| 1446 } | |
| 1447 | |
| 1448 //------------------------------------------------------------------------------------------------------------------------ | |
| 1449 // Entry points | |
| 1450 // | |
| 1451 // Here we generate the various kind of entries into the interpreter. | |
| 1452 // The two main entry type are generic bytecode methods and native call method. | |
| 1453 // These both come in synchronized and non-synchronized versions but the | |
| 1454 // frame layout they create is very similar. The other method entry | |
| 1455 // types are really just special purpose entries that are really entry | |
| 1456 // and interpretation all in one. These are for trivial methods like | |
| 1457 // accessor, empty, or special math methods. | |
| 1458 // | |
| 1459 // When control flow reaches any of the entry types for the interpreter | |
| 1460 // the following holds -> | |
| 1461 // | |
| 1462 // Arguments: | |
| 1463 // | |
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1464 // rbx,: Method* |
| 0 | 1465 // rcx: receiver |
| 1466 // | |
| 1467 // | |
| 1468 // Stack layout immediately at entry | |
| 1469 // | |
| 1470 // [ return address ] <--- rsp | |
| 1471 // [ parameter n ] | |
| 1472 // ... | |
| 1473 // [ parameter 1 ] | |
| 1474 // [ expression stack ] (caller's java expression stack) | |
| 1475 | |
| 1476 // Assuming that we don't go to one of the trivial specialized | |
| 1477 // entries the stack will look like below when we are ready to execute | |
| 1478 // the first bytecode (or call the native routine). The register usage | |
| 1479 // will be as the template based interpreter expects (see interpreter_x86.hpp). | |
| 1480 // | |
| 1481 // local variables follow incoming parameters immediately; i.e. | |
| 1482 // the return address is moved to the end of the locals). | |
| 1483 // | |
| 1484 // [ monitor entry ] <--- rsp | |
| 1485 // ... | |
| 1486 // [ monitor entry ] | |
| 1487 // [ expr. stack bottom ] | |
| 1488 // [ saved rsi ] | |
| 1489 // [ current rdi ] | |
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1490 // [ Method* ] |
| 0 | 1491 // [ saved rbp, ] <--- rbp, |
| 1492 // [ return address ] | |
| 1493 // [ local variable m ] | |
| 1494 // ... | |
| 1495 // [ local variable 1 ] | |
| 1496 // [ parameter n ] | |
| 1497 // ... | |
| 1498 // [ parameter 1 ] <--- rdi | |
| 1499 | |
| 1500 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) { | |
| 1501 // determine code generation flags | |
| 1502 bool synchronized = false; | |
| 1503 address entry_point = NULL; | |
| 1504 | |
| 1505 switch (kind) { | |
| 1506 case Interpreter::zerolocals : break; | |
| 1507 case Interpreter::zerolocals_synchronized: synchronized = true; break; | |
| 1508 case Interpreter::native : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false); break; | |
| 1509 case Interpreter::native_synchronized : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true); break; | |
| 1510 case Interpreter::empty : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry(); break; | |
| 1511 case Interpreter::accessor : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry(); break; | |
| 1512 case Interpreter::abstract : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry(); break; | |
| 1513 | |
| 1514 case Interpreter::java_lang_math_sin : // fall thru | |
| 1515 case Interpreter::java_lang_math_cos : // fall thru | |
| 1516 case Interpreter::java_lang_math_tan : // fall thru | |
| 1517 case Interpreter::java_lang_math_abs : // fall thru | |
| 1518 case Interpreter::java_lang_math_log : // fall thru | |
| 1519 case Interpreter::java_lang_math_log10 : // fall thru | |
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1520 case Interpreter::java_lang_math_sqrt : // fall thru |
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1521 case Interpreter::java_lang_math_pow : // fall thru |
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1522 case Interpreter::java_lang_math_exp : entry_point = ((InterpreterGenerator*)this)->generate_math_entry(kind); break; |
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1523 case Interpreter::java_lang_ref_reference_get |
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1524 : entry_point = ((InterpreterGenerator*)this)->generate_Reference_get_entry(); break; |
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1525 default: |
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1526 fatal(err_msg("unexpected method kind: %d", kind)); |
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1527 break; |
| 0 | 1528 } |
| 1529 | |
| 1530 if (entry_point) return entry_point; | |
| 1531 | |
| 1532 return ((InterpreterGenerator*)this)->generate_normal_entry(synchronized); | |
| 1533 | |
| 1534 } | |
| 1535 | |
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1536 // These should never be compiled since the interpreter will prefer |
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1537 // the compiled version to the intrinsic version. |
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1538 bool AbstractInterpreter::can_be_compiled(methodHandle m) { |
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1539 switch (method_kind(m)) { |
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1540 case Interpreter::java_lang_math_sin : // fall thru |
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1541 case Interpreter::java_lang_math_cos : // fall thru |
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1542 case Interpreter::java_lang_math_tan : // fall thru |
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1543 case Interpreter::java_lang_math_abs : // fall thru |
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1544 case Interpreter::java_lang_math_log : // fall thru |
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1545 case Interpreter::java_lang_math_log10 : // fall thru |
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1546 case Interpreter::java_lang_math_sqrt : // fall thru |
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1547 case Interpreter::java_lang_math_pow : // fall thru |
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1548 case Interpreter::java_lang_math_exp : |
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1549 return false; |
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1550 default: |
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1551 return true; |
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1552 } |
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1553 } |
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1554 |
| 0 | 1555 // How much stack a method activation needs in words. |
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1556 int AbstractInterpreter::size_top_interpreter_activation(Method* method) { |
| 0 | 1557 |
| 1558 const int stub_code = 4; // see generate_call_stub | |
| 1559 // Save space for one monitor to get into the interpreted method in case | |
| 1560 // the method is synchronized | |
| 1561 int monitor_size = method->is_synchronized() ? | |
| 1562 1*frame::interpreter_frame_monitor_size() : 0; | |
| 1563 | |
| 1564 // total overhead size: entry_size + (saved rbp, thru expr stack bottom). | |
| 1565 // be sure to change this if you add/subtract anything to/from the overhead area | |
| 1566 const int overhead_size = -frame::interpreter_frame_initial_sp_offset; | |
| 1567 | |
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1568 const int extra_stack = Method::extra_stack_entries(); |
| 710 | 1569 const int method_stack = (method->max_locals() + method->max_stack() + extra_stack) * |
| 1506 | 1570 Interpreter::stackElementWords; |
| 0 | 1571 return overhead_size + method_stack + stub_code; |
| 1572 } | |
| 1573 | |
| 1574 // asm based interpreter deoptimization helpers | |
| 1575 | |
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1576 int AbstractInterpreter::layout_activation(Method* method, |
| 0 | 1577 int tempcount, |
| 1578 int popframe_extra_args, | |
| 1579 int moncount, | |
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1580 int caller_actual_parameters, |
| 0 | 1581 int callee_param_count, |
| 1582 int callee_locals, | |
| 1583 frame* caller, | |
| 1584 frame* interpreter_frame, | |
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1585 bool is_top_frame, |
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1586 bool is_bottom_frame) { |
| 0 | 1587 // Note: This calculation must exactly parallel the frame setup |
| 1588 // in AbstractInterpreterGenerator::generate_method_entry. | |
| 1589 // If interpreter_frame!=NULL, set up the method, locals, and monitors. | |
| 1590 // The frame interpreter_frame, if not NULL, is guaranteed to be the right size, | |
| 1591 // as determined by a previous call to this method. | |
| 1592 // It is also guaranteed to be walkable even though it is in a skeletal state | |
| 1593 // NOTE: return size is in words not bytes | |
| 1594 | |
| 1595 // fixed size of an interpreter frame: | |
| 1506 | 1596 int max_locals = method->max_locals() * Interpreter::stackElementWords; |
| 0 | 1597 int extra_locals = (method->max_locals() - method->size_of_parameters()) * |
| 1506 | 1598 Interpreter::stackElementWords; |
| 0 | 1599 |
| 1600 int overhead = frame::sender_sp_offset - frame::interpreter_frame_initial_sp_offset; | |
| 1601 | |
| 1602 // Our locals were accounted for by the caller (or last_frame_adjust on the transistion) | |
| 1603 // Since the callee parameters already account for the callee's params we only need to account for | |
| 1604 // the extra locals. | |
| 1605 | |
| 1606 | |
| 1607 int size = overhead + | |
| 1506 | 1608 ((callee_locals - callee_param_count)*Interpreter::stackElementWords) + |
| 0 | 1609 (moncount*frame::interpreter_frame_monitor_size()) + |
| 1506 | 1610 tempcount*Interpreter::stackElementWords + popframe_extra_args; |
| 0 | 1611 |
| 1612 if (interpreter_frame != NULL) { | |
| 1613 #ifdef ASSERT | |
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1614 if (!EnableInvokeDynamic) |
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1615 // @@@ FIXME: Should we correct interpreter_frame_sender_sp in the calling sequences? |
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1616 // Probably, since deoptimization doesn't work yet. |
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1617 assert(caller->unextended_sp() == interpreter_frame->interpreter_frame_sender_sp(), "Frame not properly walkable"); |
| 0 | 1618 assert(caller->sp() == interpreter_frame->sender_sp(), "Frame not properly walkable(2)"); |
| 1619 #endif | |
| 1620 | |
| 1621 interpreter_frame->interpreter_frame_set_method(method); | |
| 1622 // NOTE the difference in using sender_sp and interpreter_frame_sender_sp | |
| 1623 // interpreter_frame_sender_sp is the original sp of the caller (the unextended_sp) | |
| 1624 // and sender_sp is fp+8 | |
| 1625 intptr_t* locals = interpreter_frame->sender_sp() + max_locals - 1; | |
| 1626 | |
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1627 #ifdef ASSERT |
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1628 if (caller->is_interpreted_frame()) { |
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1629 assert(locals < caller->fp() + frame::interpreter_frame_initial_sp_offset, "bad placement"); |
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1630 } |
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1631 #endif |
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1632 |
| 0 | 1633 interpreter_frame->interpreter_frame_set_locals(locals); |
| 1634 BasicObjectLock* montop = interpreter_frame->interpreter_frame_monitor_begin(); | |
| 1635 BasicObjectLock* monbot = montop - moncount; | |
| 1636 interpreter_frame->interpreter_frame_set_monitor_end(monbot); | |
| 1637 | |
| 1638 // Set last_sp | |
| 1639 intptr_t* rsp = (intptr_t*) monbot - | |
| 1506 | 1640 tempcount*Interpreter::stackElementWords - |
| 0 | 1641 popframe_extra_args; |
| 1642 interpreter_frame->interpreter_frame_set_last_sp(rsp); | |
| 1643 | |
| 1644 // All frames but the initial (oldest) interpreter frame we fill in have a | |
| 1645 // value for sender_sp that allows walking the stack but isn't | |
| 1646 // truly correct. Correct the value here. | |
| 1647 | |
| 1648 if (extra_locals != 0 && | |
| 1649 interpreter_frame->sender_sp() == interpreter_frame->interpreter_frame_sender_sp() ) { | |
| 1650 interpreter_frame->set_interpreter_frame_sender_sp(caller->sp() + extra_locals); | |
| 1651 } | |
| 1652 *interpreter_frame->interpreter_frame_cache_addr() = | |
| 1653 method->constants()->cache(); | |
| 1654 } | |
| 1655 return size; | |
| 1656 } | |
| 1657 | |
| 1658 | |
| 1659 //------------------------------------------------------------------------------------------------------------------------ | |
| 1660 // Exceptions | |
| 1661 | |
| 1662 void TemplateInterpreterGenerator::generate_throw_exception() { | |
| 1663 // Entry point in previous activation (i.e., if the caller was interpreted) | |
| 1664 Interpreter::_rethrow_exception_entry = __ pc(); | |
| 1295 | 1665 const Register thread = rcx; |
| 0 | 1666 |
| 1667 // Restore sp to interpreter_frame_last_sp even though we are going | |
| 1668 // to empty the expression stack for the exception processing. | |
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1669 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 1670 // rax,: exception |
| 1671 // rdx: return address/pc that threw exception | |
| 1672 __ restore_bcp(); // rsi points to call/send | |
| 1673 __ restore_locals(); | |
| 1674 | |
| 1675 // Entry point for exceptions thrown within interpreter code | |
| 1676 Interpreter::_throw_exception_entry = __ pc(); | |
| 1677 // expression stack is undefined here | |
| 1678 // rax,: exception | |
| 1679 // rsi: exception bcp | |
| 1680 __ verify_oop(rax); | |
| 1681 | |
| 1682 // expression stack must be empty before entering the VM in case of an exception | |
| 1683 __ empty_expression_stack(); | |
| 1684 __ empty_FPU_stack(); | |
| 1685 // find exception handler address and preserve exception oop | |
| 1686 __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax); | |
| 1687 // rax,: exception handler entry point | |
| 1688 // rdx: preserved exception oop | |
| 1689 // rsi: bcp for exception handler | |
| 1690 __ push_ptr(rdx); // push exception which is now the only value on the stack | |
| 1691 __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!) | |
| 1692 | |
| 1693 // If the exception is not handled in the current frame the frame is removed and | |
| 1694 // the exception is rethrown (i.e. exception continuation is _rethrow_exception). | |
| 1695 // | |
| 1696 // Note: At this point the bci is still the bxi for the instruction which caused | |
| 1697 // the exception and the expression stack is empty. Thus, for any VM calls | |
| 1698 // at this point, GC will find a legal oop map (with empty expression stack). | |
| 1699 | |
| 1700 // In current activation | |
| 1701 // tos: exception | |
| 1702 // rsi: exception bcp | |
| 1703 | |
| 1704 // | |
| 1705 // JVMTI PopFrame support | |
| 1706 // | |
| 1707 | |
| 1708 Interpreter::_remove_activation_preserving_args_entry = __ pc(); | |
| 1709 __ empty_expression_stack(); | |
| 1710 __ empty_FPU_stack(); | |
| 1711 // Set the popframe_processing bit in pending_popframe_condition indicating that we are | |
| 1712 // currently handling popframe, so that call_VMs that may happen later do not trigger new | |
| 1713 // popframe handling cycles. | |
| 1295 | 1714 __ get_thread(thread); |
| 1715 __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset())); | |
| 0 | 1716 __ orl(rdx, JavaThread::popframe_processing_bit); |
| 1295 | 1717 __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx); |
| 0 | 1718 |
| 1719 { | |
| 1720 // Check to see whether we are returning to a deoptimized frame. | |
| 1721 // (The PopFrame call ensures that the caller of the popped frame is | |
| 1722 // either interpreted or compiled and deoptimizes it if compiled.) | |
| 1723 // In this case, we can't call dispatch_next() after the frame is | |
| 1724 // popped, but instead must save the incoming arguments and restore | |
| 1725 // them after deoptimization has occurred. | |
| 1726 // | |
| 1727 // Note that we don't compare the return PC against the | |
| 1728 // deoptimization blob's unpack entry because of the presence of | |
| 1729 // adapter frames in C2. | |
| 1730 Label caller_not_deoptimized; | |
| 304 | 1731 __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize)); |
| 0 | 1732 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx); |
| 1733 __ testl(rax, rax); | |
| 1734 __ jcc(Assembler::notZero, caller_not_deoptimized); | |
| 1735 | |
| 1736 // Compute size of arguments for saving when returning to deoptimized caller | |
| 1737 __ get_method(rax); | |
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1738 __ movptr(rax, Address(rax, Method::const_offset())); |
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1739 __ load_unsigned_short(rax, Address(rax, ConstMethod::size_of_parameters_offset())); |
| 1506 | 1740 __ shlptr(rax, Interpreter::logStackElementSize); |
| 0 | 1741 __ restore_locals(); |
| 304 | 1742 __ subptr(rdi, rax); |
| 1743 __ addptr(rdi, wordSize); | |
| 0 | 1744 // Save these arguments |
| 1295 | 1745 __ get_thread(thread); |
| 1746 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), thread, rax, rdi); | |
| 0 | 1747 |
| 1748 __ remove_activation(vtos, rdx, | |
| 1749 /* throw_monitor_exception */ false, | |
| 1750 /* install_monitor_exception */ false, | |
| 1751 /* notify_jvmdi */ false); | |
| 1752 | |
| 1753 // Inform deoptimization that it is responsible for restoring these arguments | |
| 1295 | 1754 __ get_thread(thread); |
| 1755 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit); | |
| 0 | 1756 |
| 1757 // Continue in deoptimization handler | |
| 1758 __ jmp(rdx); | |
| 1759 | |
| 1760 __ bind(caller_not_deoptimized); | |
| 1761 } | |
| 1762 | |
| 1763 __ remove_activation(vtos, rdx, | |
| 1764 /* throw_monitor_exception */ false, | |
| 1765 /* install_monitor_exception */ false, | |
| 1766 /* notify_jvmdi */ false); | |
| 1767 | |
| 1768 // Finish with popframe handling | |
| 1769 // A previous I2C followed by a deoptimization might have moved the | |
| 1770 // outgoing arguments further up the stack. PopFrame expects the | |
| 1771 // mutations to those outgoing arguments to be preserved and other | |
| 1772 // constraints basically require this frame to look exactly as | |
| 1773 // though it had previously invoked an interpreted activation with | |
| 1774 // no space between the top of the expression stack (current | |
| 1775 // last_sp) and the top of stack. Rather than force deopt to | |
| 1776 // maintain this kind of invariant all the time we call a small | |
| 1777 // fixup routine to move the mutated arguments onto the top of our | |
| 1778 // expression stack if necessary. | |
| 304 | 1779 __ mov(rax, rsp); |
| 1780 __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); | |
| 1295 | 1781 __ get_thread(thread); |
| 0 | 1782 // PC must point into interpreter here |
| 1295 | 1783 __ set_last_Java_frame(thread, noreg, rbp, __ pc()); |
| 1784 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx); | |
| 1785 __ get_thread(thread); | |
| 1786 __ reset_last_Java_frame(thread, true, true); | |
| 0 | 1787 // Restore the last_sp and null it out |
| 304 | 1788 __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize)); |
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1789 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
| 0 | 1790 |
| 1791 __ restore_bcp(); | |
| 1792 __ restore_locals(); | |
| 1793 // The method data pointer was incremented already during | |
| 1794 // call profiling. We have to restore the mdp for the current bcp. | |
| 1795 if (ProfileInterpreter) { | |
| 1796 __ set_method_data_pointer_for_bcp(); | |
| 1797 } | |
| 1798 | |
| 1799 // Clear the popframe condition flag | |
| 1295 | 1800 __ get_thread(thread); |
| 1801 __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive); | |
| 0 | 1802 |
| 1803 __ dispatch_next(vtos); | |
| 1804 // end of PopFrame support | |
| 1805 | |
| 1806 Interpreter::_remove_activation_entry = __ pc(); | |
| 1807 | |
| 1808 // preserve exception over this code sequence | |
| 1809 __ pop_ptr(rax); | |
| 1295 | 1810 __ get_thread(thread); |
| 1811 __ movptr(Address(thread, JavaThread::vm_result_offset()), rax); | |
| 0 | 1812 // remove the activation (without doing throws on illegalMonitorExceptions) |
| 1813 __ remove_activation(vtos, rdx, false, true, false); | |
| 1814 // restore exception | |
| 1295 | 1815 __ get_thread(thread); |
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1816 __ get_vm_result(rax, thread); |
| 0 | 1817 |
| 1818 // Inbetween activations - previous activation type unknown yet | |
| 1819 // compute continuation point - the continuation point expects | |
| 1820 // the following registers set up: | |
| 1821 // | |
| 1295 | 1822 // rax: exception |
| 0 | 1823 // rdx: return address/pc that threw exception |
| 1824 // rsp: expression stack of caller | |
| 1295 | 1825 // rbp: rbp, of caller |
| 304 | 1826 __ push(rax); // save exception |
| 1827 __ push(rdx); // save return address | |
| 1295 | 1828 __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, rdx); |
| 304 | 1829 __ mov(rbx, rax); // save exception handler |
| 1830 __ pop(rdx); // restore return address | |
| 1831 __ pop(rax); // restore exception | |
| 0 | 1832 // Note that an "issuing PC" is actually the next PC after the call |
| 1833 __ jmp(rbx); // jump to exception handler of caller | |
| 1834 } | |
| 1835 | |
| 1836 | |
| 1837 // | |
| 1838 // JVMTI ForceEarlyReturn support | |
| 1839 // | |
| 1840 address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) { | |
| 1841 address entry = __ pc(); | |
| 1295 | 1842 const Register thread = rcx; |
| 0 | 1843 |
| 1844 __ restore_bcp(); | |
| 1845 __ restore_locals(); | |
| 1846 __ empty_expression_stack(); | |
| 1847 __ empty_FPU_stack(); | |
| 1848 __ load_earlyret_value(state); | |
| 1849 | |
| 1295 | 1850 __ get_thread(thread); |
| 1851 __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset())); | |
| 0 | 1852 const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset()); |
| 1853 | |
| 1854 // Clear the earlyret state | |
| 1855 __ movl(cond_addr, JvmtiThreadState::earlyret_inactive); | |
| 1856 | |
| 1857 __ remove_activation(state, rsi, | |
| 1858 false, /* throw_monitor_exception */ | |
| 1859 false, /* install_monitor_exception */ | |
| 1860 true); /* notify_jvmdi */ | |
| 1861 __ jmp(rsi); | |
| 1862 return entry; | |
| 1863 } // end of ForceEarlyReturn support | |
| 1864 | |
| 1865 | |
| 1866 //------------------------------------------------------------------------------------------------------------------------ | |
| 1867 // Helper for vtos entry point generation | |
| 1868 | |
| 1869 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) { | |
| 1870 assert(t->is_valid() && t->tos_in() == vtos, "illegal template"); | |
| 1871 Label L; | |
| 1872 fep = __ pc(); __ push(ftos); __ jmp(L); | |
| 1873 dep = __ pc(); __ push(dtos); __ jmp(L); | |
| 1874 lep = __ pc(); __ push(ltos); __ jmp(L); | |
| 1875 aep = __ pc(); __ push(atos); __ jmp(L); | |
| 1876 bep = cep = sep = // fall through | |
| 1877 iep = __ pc(); __ push(itos); // fall through | |
| 1878 vep = __ pc(); __ bind(L); // fall through | |
| 1879 generate_and_dispatch(t); | |
| 1880 } | |
| 1881 | |
| 1882 //------------------------------------------------------------------------------------------------------------------------ | |
| 1883 // Generation of individual instructions | |
| 1884 | |
| 1885 // helpers for generate_and_dispatch | |
| 1886 | |
| 1887 | |
| 1888 | |
| 1889 InterpreterGenerator::InterpreterGenerator(StubQueue* code) | |
| 1890 : TemplateInterpreterGenerator(code) { | |
| 1891 generate_all(); // down here so it can be "virtual" | |
| 1892 } | |
| 1893 | |
| 1894 //------------------------------------------------------------------------------------------------------------------------ | |
| 1895 | |
| 1896 // Non-product code | |
| 1897 #ifndef PRODUCT | |
| 1898 address TemplateInterpreterGenerator::generate_trace_code(TosState state) { | |
| 1899 address entry = __ pc(); | |
| 1900 | |
| 1901 // prepare expression stack | |
| 304 | 1902 __ pop(rcx); // pop return address so expression stack is 'pure' |
| 0 | 1903 __ push(state); // save tosca |
| 1904 | |
| 1905 // pass tosca registers as arguments & call tracer | |
| 1906 __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx); | |
| 304 | 1907 __ mov(rcx, rax); // make sure return address is not destroyed by pop(state) |
| 0 | 1908 __ pop(state); // restore tosca |
| 1909 | |
| 1910 // return | |
| 1911 __ jmp(rcx); | |
| 1912 | |
| 1913 return entry; | |
| 1914 } | |
| 1915 | |
| 1916 | |
| 1917 void TemplateInterpreterGenerator::count_bytecode() { | |
| 304 | 1918 __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value)); |
| 0 | 1919 } |
| 1920 | |
| 1921 | |
| 1922 void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { | |
| 304 | 1923 __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()])); |
| 0 | 1924 } |
| 1925 | |
| 1926 | |
| 1927 void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { | |
| 1928 __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx); | |
| 1929 __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes); | |
| 1930 __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes); | |
| 1931 ExternalAddress table((address) BytecodePairHistogram::_counters); | |
| 1932 Address index(noreg, rbx, Address::times_4); | |
| 304 | 1933 __ incrementl(ArrayAddress(table, index)); |
| 0 | 1934 } |
| 1935 | |
| 1936 | |
| 1937 void TemplateInterpreterGenerator::trace_bytecode(Template* t) { | |
| 1938 // Call a little run-time stub to avoid blow-up for each bytecode. | |
| 1939 // The run-time runtime saves the right registers, depending on | |
| 1940 // the tosca in-state for the given template. | |
| 1941 assert(Interpreter::trace_code(t->tos_in()) != NULL, | |
| 1942 "entry must have been generated"); | |
| 1943 __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in()))); | |
| 1944 } | |
| 1945 | |
| 1946 | |
| 1947 void TemplateInterpreterGenerator::stop_interpreter_at() { | |
| 1948 Label L; | |
| 1949 __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value), | |
| 1950 StopInterpreterAt); | |
| 1951 __ jcc(Assembler::notEqual, L); | |
| 1952 __ int3(); | |
| 1953 __ bind(L); | |
| 1954 } | |
| 1955 #endif // !PRODUCT | |
| 1956 #endif // CC_INTERP |