Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 2118:dd031b2226de
4930919: race condition in MDO creation at back branch locations
Summary: Reuse set_method_data_for_bcp() to setup mdp after MDO creation.
Reviewed-by: kvn, never
| author | iveresov |
|---|---|
| date | Mon, 10 Jan 2011 18:46:29 -0800 |
| parents | f95d63e2154a |
| children | 38fea01eb669 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "interp_masm_x86_32.hpp" | |
| 27 #include "interpreter/interpreter.hpp" | |
| 28 #include "interpreter/interpreterRuntime.hpp" | |
| 29 #include "oops/arrayOop.hpp" | |
| 30 #include "oops/markOop.hpp" | |
| 31 #include "oops/methodDataOop.hpp" | |
| 32 #include "oops/methodOop.hpp" | |
| 33 #include "prims/jvmtiExport.hpp" | |
| 34 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
| 35 #include "prims/jvmtiThreadState.hpp" | |
| 36 #include "runtime/basicLock.hpp" | |
| 37 #include "runtime/biasedLocking.hpp" | |
| 38 #include "runtime/sharedRuntime.hpp" | |
| 39 #ifdef TARGET_OS_FAMILY_linux | |
| 40 # include "thread_linux.inline.hpp" | |
| 41 #endif | |
| 42 #ifdef TARGET_OS_FAMILY_solaris | |
| 43 # include "thread_solaris.inline.hpp" | |
| 44 #endif | |
| 45 #ifdef TARGET_OS_FAMILY_windows | |
| 46 # include "thread_windows.inline.hpp" | |
| 47 #endif | |
| 0 | 48 |
| 49 | |
| 50 // Implementation of InterpreterMacroAssembler | |
| 51 #ifdef CC_INTERP | |
| 52 void InterpreterMacroAssembler::get_method(Register reg) { | |
| 304 | 53 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize))); |
| 54 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); | |
| 0 | 55 } |
| 56 #endif // CC_INTERP | |
| 57 | |
| 58 | |
| 59 #ifndef CC_INTERP | |
| 60 void InterpreterMacroAssembler::call_VM_leaf_base( | |
| 61 address entry_point, | |
| 62 int number_of_arguments | |
| 63 ) { | |
| 64 // interpreter specific | |
| 65 // | |
| 66 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer | |
| 67 // since these are callee saved registers and no blocking/ | |
| 68 // GC can happen in leaf calls. | |
| 69 // Further Note: DO NOT save/restore bcp/locals. If a caller has | |
| 70 // already saved them so that it can use rsi/rdi as temporaries | |
| 71 // then a save/restore here will DESTROY the copy the caller | |
| 72 // saved! There used to be a save_bcp() that only happened in | |
| 73 // the ASSERT path (no restore_bcp). Which caused bizarre failures | |
| 74 // when jvm built with ASSERTs. | |
| 75 #ifdef ASSERT | |
| 76 { Label L; | |
| 304 | 77 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 78 jcc(Assembler::equal, L); |
| 79 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL"); | |
| 80 bind(L); | |
| 81 } | |
| 82 #endif | |
| 83 // super call | |
| 84 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
| 85 // interpreter specific | |
| 86 | |
| 87 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals | |
| 88 // but since they may not have been saved (and we don't want to | |
| 89 // save them here (see note above) the assert is invalid. | |
| 90 } | |
| 91 | |
| 92 | |
| 93 void InterpreterMacroAssembler::call_VM_base( | |
| 94 Register oop_result, | |
| 95 Register java_thread, | |
| 96 Register last_java_sp, | |
| 97 address entry_point, | |
| 98 int number_of_arguments, | |
| 99 bool check_exceptions | |
| 100 ) { | |
| 101 #ifdef ASSERT | |
| 102 { Label L; | |
| 304 | 103 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 104 jcc(Assembler::equal, L); |
| 105 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL"); | |
| 106 bind(L); | |
| 107 } | |
| 108 #endif /* ASSERT */ | |
| 109 // interpreter specific | |
| 110 // | |
| 111 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
| 112 // really make a difference for these runtime calls, since they are | |
| 113 // slow anyway. Btw., bcp must be saved/restored since it may change | |
| 114 // due to GC. | |
| 115 assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
| 116 save_bcp(); | |
| 117 // super call | |
| 118 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); | |
| 119 // interpreter specific | |
| 120 restore_bcp(); | |
| 121 restore_locals(); | |
| 122 } | |
| 123 | |
| 124 | |
| 125 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
| 126 if (JvmtiExport::can_pop_frame()) { | |
| 127 Label L; | |
| 128 // Initiate popframe handling only if it is not already being processed. If the flag | |
| 129 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
| 130 // handling - we don't want to reenter. | |
| 131 Register pop_cond = java_thread; // Not clear if any other register is available... | |
| 132 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset())); | |
| 133 testl(pop_cond, JavaThread::popframe_pending_bit); | |
| 134 jcc(Assembler::zero, L); | |
| 135 testl(pop_cond, JavaThread::popframe_processing_bit); | |
| 136 jcc(Assembler::notZero, L); | |
| 137 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
| 138 // address of the same-named entrypoint in the generated interpreter code. | |
| 139 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
| 140 jmp(rax); | |
| 141 bind(L); | |
| 142 get_thread(java_thread); | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 | |
| 147 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
| 148 get_thread(rcx); | |
| 149 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); | |
| 150 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset()); | |
| 151 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset()); | |
| 152 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset()); | |
| 153 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset() | |
| 154 + in_ByteSize(wordSize)); | |
| 155 switch (state) { | |
| 304 | 156 case atos: movptr(rax, oop_addr); |
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157 movptr(oop_addr, NULL_WORD); |
| 0 | 158 verify_oop(rax, state); break; |
| 304 | 159 case ltos: |
| 160 movl(rdx, val_addr1); // fall through | |
| 0 | 161 case btos: // fall through |
| 162 case ctos: // fall through | |
| 163 case stos: // fall through | |
| 164 case itos: movl(rax, val_addr); break; | |
| 165 case ftos: fld_s(val_addr); break; | |
| 166 case dtos: fld_d(val_addr); break; | |
| 167 case vtos: /* nothing to do */ break; | |
| 168 default : ShouldNotReachHere(); | |
| 169 } | |
| 170 // Clean up tos value in the thread object | |
| 304 | 171 movl(tos_addr, (int32_t) ilgl); |
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172 movptr(val_addr, NULL_WORD); |
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173 NOT_LP64(movptr(val_addr1, NULL_WORD)); |
| 0 | 174 } |
| 175 | |
| 176 | |
| 177 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
| 178 if (JvmtiExport::can_force_early_return()) { | |
| 179 Label L; | |
| 180 Register tmp = java_thread; | |
| 304 | 181 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset())); |
| 182 testptr(tmp, tmp); | |
| 0 | 183 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
| 184 | |
| 185 // Initiate earlyret handling only if it is not already being processed. | |
| 186 // If the flag has the earlyret_processing bit set, it means that this code | |
| 187 // is called *during* earlyret handling - we don't want to reenter. | |
| 188 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset())); | |
| 189 cmpl(tmp, JvmtiThreadState::earlyret_pending); | |
| 190 jcc(Assembler::notEqual, L); | |
| 191 | |
| 192 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
| 193 // same-named entrypoint in the generated interpreter code. | |
| 194 get_thread(java_thread); | |
| 304 | 195 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 196 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset())); |
| 197 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1); | |
| 198 jmp(rax); | |
| 199 bind(L); | |
| 200 get_thread(java_thread); | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 | |
| 205 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) { | |
| 206 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
| 207 movl(reg, Address(rsi, bcp_offset)); | |
| 304 | 208 bswapl(reg); |
| 0 | 209 shrl(reg, 16); |
| 210 } | |
| 211 | |
| 212 | |
| 1565 | 213 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) { |
| 0 | 214 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
| 1565 | 215 if (index_size == sizeof(u2)) { |
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216 load_unsigned_short(reg, Address(rsi, bcp_offset)); |
| 1565 | 217 } else if (index_size == sizeof(u4)) { |
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218 assert(EnableInvokeDynamic, "giant index used only for EnableInvokeDynamic"); |
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219 movl(reg, Address(rsi, bcp_offset)); |
| 1108 | 220 // Check if the secondary index definition is still ~x, otherwise |
| 221 // we have to change the following assembler code to calculate the | |
| 222 // plain index. | |
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223 assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line"); |
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224 notl(reg); // convert to plain index |
| 1565 | 225 } else if (index_size == sizeof(u1)) { |
| 226 assert(EnableMethodHandles, "tiny index used only for EnableMethodHandles"); | |
| 227 load_unsigned_byte(reg, Address(rsi, bcp_offset)); | |
| 228 } else { | |
| 229 ShouldNotReachHere(); | |
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230 } |
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231 } |
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232 |
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233 |
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234 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, |
| 1565 | 235 int bcp_offset, size_t index_size) { |
| 0 | 236 assert(cache != index, "must use different registers"); |
| 1565 | 237 get_cache_index_at_bcp(index, bcp_offset, index_size); |
| 304 | 238 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 239 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
| 304 | 240 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index |
| 0 | 241 } |
| 242 | |
| 243 | |
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244 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
| 1565 | 245 int bcp_offset, size_t index_size) { |
| 0 | 246 assert(cache != tmp, "must use different register"); |
| 1565 | 247 get_cache_index_at_bcp(tmp, bcp_offset, index_size); |
| 0 | 248 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
| 249 // convert from field index to ConstantPoolCacheEntry index | |
| 250 // and from word offset to byte offset | |
| 251 shll(tmp, 2 + LogBytesPerWord); | |
| 304 | 252 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 253 // skip past the header |
| 304 | 254 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
| 255 addptr(cache, tmp); // construct pointer to cache entry | |
| 0 | 256 } |
| 257 | |
| 258 | |
| 259 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
| 260 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
| 261 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
| 262 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
| 263 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
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264 assert( Rsub_klass != rcx, "used as a temp" ); |
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265 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
| 0 | 266 |
| 267 // Profile the not-null value's klass. | |
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268 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
| 0 | 269 |
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270 // Do the check. |
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271 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
| 0 | 272 |
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273 // Profile the failure of the check. |
| 0 | 274 profile_typecheck_failed(rcx); // blows rcx |
| 275 } | |
| 276 | |
| 277 void InterpreterMacroAssembler::f2ieee() { | |
| 278 if (IEEEPrecision) { | |
| 279 fstp_s(Address(rsp, 0)); | |
| 280 fld_s(Address(rsp, 0)); | |
| 281 } | |
| 282 } | |
| 283 | |
| 284 | |
| 285 void InterpreterMacroAssembler::d2ieee() { | |
| 286 if (IEEEPrecision) { | |
| 287 fstp_d(Address(rsp, 0)); | |
| 288 fld_d(Address(rsp, 0)); | |
| 289 } | |
| 290 } | |
| 291 | |
| 292 // Java Expression Stack | |
| 293 | |
| 294 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 304 | 295 pop(r); |
| 0 | 296 } |
| 297 | |
| 298 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 304 | 299 pop(r); |
| 0 | 300 } |
| 301 | |
| 302 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
| 304 | 303 pop(lo); |
| 304 pop(hi); | |
| 0 | 305 } |
| 306 | |
| 307 void InterpreterMacroAssembler::pop_f() { | |
| 308 fld_s(Address(rsp, 0)); | |
| 304 | 309 addptr(rsp, 1 * wordSize); |
| 0 | 310 } |
| 311 | |
| 312 void InterpreterMacroAssembler::pop_d() { | |
| 313 fld_d(Address(rsp, 0)); | |
| 304 | 314 addptr(rsp, 2 * wordSize); |
| 0 | 315 } |
| 316 | |
| 317 | |
| 318 void InterpreterMacroAssembler::pop(TosState state) { | |
| 319 switch (state) { | |
| 320 case atos: pop_ptr(rax); break; | |
| 321 case btos: // fall through | |
| 322 case ctos: // fall through | |
| 323 case stos: // fall through | |
| 324 case itos: pop_i(rax); break; | |
| 325 case ltos: pop_l(rax, rdx); break; | |
| 326 case ftos: pop_f(); break; | |
| 327 case dtos: pop_d(); break; | |
| 328 case vtos: /* nothing to do */ break; | |
| 329 default : ShouldNotReachHere(); | |
| 330 } | |
| 331 verify_oop(rax, state); | |
| 332 } | |
| 333 | |
| 334 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 304 | 335 push(r); |
| 0 | 336 } |
| 337 | |
| 338 void InterpreterMacroAssembler::push_i(Register r) { | |
| 304 | 339 push(r); |
| 0 | 340 } |
| 341 | |
| 342 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
| 304 | 343 push(hi); |
| 344 push(lo); | |
| 0 | 345 } |
| 346 | |
| 347 void InterpreterMacroAssembler::push_f() { | |
| 348 // Do not schedule for no AGI! Never write beyond rsp! | |
| 304 | 349 subptr(rsp, 1 * wordSize); |
| 0 | 350 fstp_s(Address(rsp, 0)); |
| 351 } | |
| 352 | |
| 353 void InterpreterMacroAssembler::push_d(Register r) { | |
| 1506 | 354 // Do not schedule for no AGI! Never write beyond rsp! |
| 355 subptr(rsp, 2 * wordSize); | |
| 356 fstp_d(Address(rsp, 0)); | |
| 0 | 357 } |
| 358 | |
| 359 | |
| 360 void InterpreterMacroAssembler::push(TosState state) { | |
| 361 verify_oop(rax, state); | |
| 362 switch (state) { | |
| 363 case atos: push_ptr(rax); break; | |
| 364 case btos: // fall through | |
| 365 case ctos: // fall through | |
| 366 case stos: // fall through | |
| 367 case itos: push_i(rax); break; | |
| 368 case ltos: push_l(rax, rdx); break; | |
| 369 case ftos: push_f(); break; | |
| 370 case dtos: push_d(rax); break; | |
| 371 case vtos: /* nothing to do */ break; | |
| 372 default : ShouldNotReachHere(); | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 | |
| 1506 | 377 // Helpers for swap and dup |
| 378 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
| 304 | 379 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
| 0 | 380 } |
| 381 | |
| 1506 | 382 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
| 383 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
| 0 | 384 } |
| 385 | |
| 386 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) { | |
| 387 MacroAssembler::call_VM_leaf_base(entry_point, 0); | |
| 388 } | |
| 389 | |
| 390 | |
| 391 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) { | |
| 304 | 392 push(arg_1); |
| 0 | 393 MacroAssembler::call_VM_leaf_base(entry_point, 1); |
| 394 } | |
| 395 | |
| 396 | |
| 397 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) { | |
| 304 | 398 push(arg_2); |
| 399 push(arg_1); | |
| 0 | 400 MacroAssembler::call_VM_leaf_base(entry_point, 2); |
| 401 } | |
| 402 | |
| 403 | |
| 404 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) { | |
| 304 | 405 push(arg_3); |
| 406 push(arg_2); | |
| 407 push(arg_1); | |
| 0 | 408 MacroAssembler::call_VM_leaf_base(entry_point, 3); |
| 409 } | |
| 410 | |
| 411 | |
| 710 | 412 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
| 0 | 413 // set sender sp |
| 304 | 414 lea(rsi, Address(rsp, wordSize)); |
| 0 | 415 // record last_sp |
| 304 | 416 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
| 710 | 417 } |
| 418 | |
| 419 | |
| 420 // Jump to from_interpreted entry of a call unless single stepping is possible | |
| 421 // in this thread in which case we must call the i2i entry | |
| 422 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
| 423 prepare_to_jump_from_interpreted(); | |
| 0 | 424 |
| 425 if (JvmtiExport::can_post_interpreter_events()) { | |
| 426 Label run_compiled_code; | |
| 427 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 428 // compiled code in threads for which the event is enabled. Check here for | |
| 429 // interp_only_mode if these events CAN be enabled. | |
| 430 get_thread(temp); | |
| 431 // interp_only is an int, on little endian it is sufficient to test the byte only | |
| 432 // Is a cmpl faster (ce | |
| 433 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); | |
| 434 jcc(Assembler::zero, run_compiled_code); | |
| 435 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); | |
| 436 bind(run_compiled_code); | |
| 437 } | |
| 438 | |
| 439 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
| 440 | |
| 441 } | |
| 442 | |
| 443 | |
| 444 // The following two routines provide a hook so that an implementation | |
| 445 // can schedule the dispatch in two parts. Intel does not do this. | |
| 446 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
| 447 // Nothing Intel-specific to be done here. | |
| 448 } | |
| 449 | |
| 450 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
| 451 dispatch_next(state, step); | |
| 452 } | |
| 453 | |
| 454 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
| 455 bool verifyoop) { | |
| 456 verify_FPU(1, state); | |
| 457 if (VerifyActivationFrameSize) { | |
| 458 Label L; | |
| 304 | 459 mov(rcx, rbp); |
| 460 subptr(rcx, rsp); | |
| 0 | 461 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
| 304 | 462 cmpptr(rcx, min_frame_size); |
| 0 | 463 jcc(Assembler::greaterEqual, L); |
| 464 stop("broken stack frame"); | |
| 465 bind(L); | |
| 466 } | |
| 467 if (verifyoop) verify_oop(rax, state); | |
| 304 | 468 Address index(noreg, rbx, Address::times_ptr); |
| 0 | 469 ExternalAddress tbl((address)table); |
| 470 ArrayAddress dispatch(tbl, index); | |
| 471 jump(dispatch); | |
| 472 } | |
| 473 | |
| 474 | |
| 475 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
| 476 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 477 } | |
| 478 | |
| 479 | |
| 480 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
| 481 dispatch_base(state, Interpreter::normal_table(state)); | |
| 482 } | |
| 483 | |
| 484 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
| 485 dispatch_base(state, Interpreter::normal_table(state), false); | |
| 486 } | |
| 487 | |
| 488 | |
| 489 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
| 490 // load next bytecode (load before advancing rsi to prevent AGI) | |
| 491 load_unsigned_byte(rbx, Address(rsi, step)); | |
| 492 // advance rsi | |
| 493 increment(rsi, step); | |
| 494 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 495 } | |
| 496 | |
| 497 | |
| 498 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 499 // load current bytecode | |
| 500 load_unsigned_byte(rbx, Address(rsi, 0)); | |
| 501 dispatch_base(state, table); | |
| 502 } | |
| 503 | |
| 504 // remove activation | |
| 505 // | |
| 506 // Unlock the receiver if this is a synchronized method. | |
| 507 // Unlock any Java monitors from syncronized blocks. | |
| 508 // Remove the activation from the stack. | |
| 509 // | |
| 510 // If there are locked Java monitors | |
| 511 // If throw_monitor_exception | |
| 512 // throws IllegalMonitorStateException | |
| 513 // Else if install_monitor_exception | |
| 514 // installs IllegalMonitorStateException | |
| 515 // Else | |
| 516 // no error processing | |
| 517 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
| 518 bool throw_monitor_exception, | |
| 519 bool install_monitor_exception, | |
| 520 bool notify_jvmdi) { | |
| 521 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
| 522 // check if synchronized method | |
| 523 Label unlocked, unlock, no_unlock; | |
| 524 | |
| 525 get_thread(rcx); | |
| 526 const Address do_not_unlock_if_synchronized(rcx, | |
| 527 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 528 | |
| 529 movbool(rbx, do_not_unlock_if_synchronized); | |
| 304 | 530 mov(rdi,rbx); |
| 0 | 531 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
| 532 | |
| 304 | 533 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
| 0 | 534 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
| 535 | |
| 536 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
| 537 jcc(Assembler::zero, unlocked); | |
| 538 | |
| 539 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
| 540 // is set. | |
| 304 | 541 mov(rcx,rdi); |
| 0 | 542 testbool(rcx); |
| 543 jcc(Assembler::notZero, no_unlock); | |
| 544 | |
| 545 // unlock monitor | |
| 546 push(state); // save result | |
| 547 | |
| 548 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 549 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 550 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
| 304 | 551 lea (rdx, monitor); // address of first monitor |
| 0 | 552 |
| 304 | 553 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
| 554 testptr(rax, rax); | |
| 555 jcc (Assembler::notZero, unlock); | |
| 0 | 556 |
| 557 pop(state); | |
| 558 if (throw_monitor_exception) { | |
| 559 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 560 | |
| 561 // Entry already unlocked, need to throw exception | |
| 562 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 563 should_not_reach_here(); | |
| 564 } else { | |
| 565 // Monitor already unlocked during a stack unroll. | |
| 566 // If requested, install an illegal_monitor_state_exception. | |
| 567 // Continue with stack unrolling. | |
| 568 if (install_monitor_exception) { | |
| 569 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 570 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 571 } | |
| 572 jmp(unlocked); | |
| 573 } | |
| 574 | |
| 575 bind(unlock); | |
| 576 unlock_object(rdx); | |
| 577 pop(state); | |
| 578 | |
| 579 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
| 580 bind(unlocked); | |
| 581 | |
| 582 // rax, rdx: Might contain return value | |
| 583 | |
| 584 // Check that all monitors are unlocked | |
| 585 { | |
| 586 Label loop, exception, entry, restart; | |
| 587 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 588 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 589 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 590 | |
| 591 bind(restart); | |
| 304 | 592 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
| 593 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
| 0 | 594 jmp(entry); |
| 595 | |
| 596 // Entry already locked, need to throw exception | |
| 597 bind(exception); | |
| 598 | |
| 599 if (throw_monitor_exception) { | |
| 600 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 601 | |
| 602 // Throw exception | |
| 603 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 604 should_not_reach_here(); | |
| 605 } else { | |
| 606 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
| 607 // Unlock does not block, so don't have to worry about the frame | |
| 608 | |
| 609 push(state); | |
| 304 | 610 mov(rdx, rcx); |
| 0 | 611 unlock_object(rdx); |
| 612 pop(state); | |
| 613 | |
| 614 if (install_monitor_exception) { | |
| 615 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 616 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 617 } | |
| 618 | |
| 619 jmp(restart); | |
| 620 } | |
| 621 | |
| 622 bind(loop); | |
| 304 | 623 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
| 0 | 624 jcc(Assembler::notEqual, exception); |
| 625 | |
| 304 | 626 addptr(rcx, entry_size); // otherwise advance to next entry |
| 0 | 627 bind(entry); |
| 304 | 628 cmpptr(rcx, rbx); // check if bottom reached |
| 0 | 629 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 630 } | |
| 631 | |
| 632 bind(no_unlock); | |
| 633 | |
| 634 // jvmti support | |
| 635 if (notify_jvmdi) { | |
| 636 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
| 637 } else { | |
| 638 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
| 639 } | |
| 640 | |
| 641 // remove activation | |
| 304 | 642 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 643 leave(); // remove frame anchor |
| 304 | 644 pop(ret_addr); // get return address |
| 645 mov(rsp, rbx); // set sp to sender sp | |
| 0 | 646 if (UseSSE) { |
| 647 // float and double are returned in xmm register in SSE-mode | |
| 648 if (state == ftos && UseSSE >= 1) { | |
| 304 | 649 subptr(rsp, wordSize); |
| 0 | 650 fstp_s(Address(rsp, 0)); |
| 651 movflt(xmm0, Address(rsp, 0)); | |
| 304 | 652 addptr(rsp, wordSize); |
| 0 | 653 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 654 subptr(rsp, 2*wordSize); |
| 0 | 655 fstp_d(Address(rsp, 0)); |
| 656 movdbl(xmm0, Address(rsp, 0)); | |
| 304 | 657 addptr(rsp, 2*wordSize); |
| 0 | 658 } |
| 659 } | |
| 660 } | |
| 661 | |
| 662 #endif /* !CC_INTERP */ | |
| 663 | |
| 664 | |
| 665 // Lock object | |
| 666 // | |
| 667 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
| 668 // be initialized with object to lock | |
| 669 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
| 670 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 671 | |
| 672 if (UseHeavyMonitors) { | |
| 673 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 674 } else { | |
| 675 | |
| 676 Label done; | |
| 677 | |
| 678 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 679 const Register obj_reg = rcx; // Will contain the oop | |
| 680 | |
| 681 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
| 682 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
| 683 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
| 684 | |
| 685 Label slow_case; | |
| 686 | |
| 687 // Load object pointer into obj_reg %rcx | |
| 304 | 688 movptr(obj_reg, Address(lock_reg, obj_offset)); |
| 0 | 689 |
| 690 if (UseBiasedLocking) { | |
| 691 // Note: we use noreg for the temporary register since it's hard | |
| 692 // to come up with a free register on all incoming code paths | |
| 693 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
| 694 } | |
| 695 | |
| 696 // Load immediate 1 into swap_reg %rax, | |
| 304 | 697 movptr(swap_reg, (int32_t)1); |
| 0 | 698 |
| 699 // Load (object->mark() | 1) into swap_reg %rax, | |
| 304 | 700 orptr(swap_reg, Address(obj_reg, 0)); |
| 0 | 701 |
| 702 // Save (object->mark() | 1) into BasicLock's displaced header | |
| 304 | 703 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 704 |
| 705 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
| 706 if (os::is_MP()) { | |
| 707 lock(); | |
| 708 } | |
| 304 | 709 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
| 0 | 710 if (PrintBiasedLockingStatistics) { |
| 711 cond_inc32(Assembler::zero, | |
| 712 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 713 } | |
| 714 jcc(Assembler::zero, done); | |
| 715 | |
| 716 // Test if the oopMark is an obvious stack pointer, i.e., | |
| 717 // 1) (mark & 3) == 0, and | |
| 718 // 2) rsp <= mark < mark + os::pagesize() | |
| 719 // | |
| 720 // These 3 tests can be done by evaluating the following | |
| 721 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
| 722 // assuming both stack pointer and pagesize have their | |
| 723 // least significant 2 bits clear. | |
| 724 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
| 304 | 725 subptr(swap_reg, rsp); |
| 726 andptr(swap_reg, 3 - os::vm_page_size()); | |
| 0 | 727 |
| 728 // Save the test result, for recursive case, the result is zero | |
| 304 | 729 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 730 |
| 731 if (PrintBiasedLockingStatistics) { | |
| 732 cond_inc32(Assembler::zero, | |
| 733 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 734 } | |
| 735 jcc(Assembler::zero, done); | |
| 736 | |
| 737 bind(slow_case); | |
| 738 | |
| 739 // Call the runtime routine for slow case | |
| 740 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 741 | |
| 742 bind(done); | |
| 743 } | |
| 744 } | |
| 745 | |
| 746 | |
| 747 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
| 748 // | |
| 749 // Argument: rdx : Points to BasicObjectLock structure for lock | |
| 750 // Throw an IllegalMonitorException if object is not locked by current thread | |
| 751 // | |
| 752 // Uses: rax, rbx, rcx, rdx | |
| 753 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
| 754 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 755 | |
| 756 if (UseHeavyMonitors) { | |
| 757 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
| 758 } else { | |
| 759 Label done; | |
| 760 | |
| 761 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 762 const Register header_reg = rbx; // Will contain the old oopMark | |
| 763 const Register obj_reg = rcx; // Will contain the oop | |
| 764 | |
| 765 save_bcp(); // Save in case of exception | |
| 766 | |
| 767 // Convert from BasicObjectLock structure to object and BasicLock structure | |
| 768 // Store the BasicLock address into %rax, | |
| 304 | 769 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
| 0 | 770 |
| 771 // Load oop into obj_reg(%rcx) | |
| 304 | 772 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
| 0 | 773 |
| 774 // Free entry | |
|
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775 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
| 0 | 776 |
| 777 if (UseBiasedLocking) { | |
| 778 biased_locking_exit(obj_reg, header_reg, done); | |
| 779 } | |
| 780 | |
| 781 // Load the old header from BasicLock structure | |
| 304 | 782 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
| 0 | 783 |
| 784 // Test for recursion | |
| 304 | 785 testptr(header_reg, header_reg); |
| 0 | 786 |
| 787 // zero for recursive case | |
| 788 jcc(Assembler::zero, done); | |
| 789 | |
| 790 // Atomic swap back the old header | |
| 791 if (os::is_MP()) lock(); | |
| 304 | 792 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
| 0 | 793 |
| 794 // zero for recursive case | |
| 795 jcc(Assembler::zero, done); | |
| 796 | |
| 797 // Call the runtime routine for slow case. | |
| 304 | 798 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
| 0 | 799 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
| 800 | |
| 801 bind(done); | |
| 802 | |
| 803 restore_bcp(); | |
| 804 } | |
| 805 } | |
| 806 | |
| 807 | |
| 808 #ifndef CC_INTERP | |
| 809 | |
| 810 // Test ImethodDataPtr. If it is null, continue at the specified label | |
| 811 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
| 812 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 813 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
| 814 testptr(mdp, mdp); | |
| 0 | 815 jcc(Assembler::zero, zero_continue); |
| 816 } | |
| 817 | |
| 818 | |
| 819 // Set the method data pointer for the current bcp. | |
| 820 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 821 assert(ProfileInterpreter, "must be profiling interpreter"); | |
|
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822 Label set_mdp; |
| 304 | 823 push(rax); |
| 824 push(rbx); | |
| 0 | 825 |
| 826 get_method(rbx); | |
| 827 // Test MDO to avoid the call if it is NULL. | |
| 304 | 828 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 829 testptr(rax, rax); | |
|
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830 jcc(Assembler::zero, set_mdp); |
| 0 | 831 // rbx,: method |
| 832 // rsi: bcp | |
| 833 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
| 834 // rax,: mdi | |
|
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835 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
| 304 | 836 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 837 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); | |
|
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838 addptr(rax, rbx); |
|
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839 bind(set_mdp); |
|
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840 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
| 304 | 841 pop(rbx); |
| 842 pop(rax); | |
| 0 | 843 } |
| 844 | |
| 845 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 846 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 847 #ifdef ASSERT | |
| 848 Label verify_continue; | |
| 304 | 849 push(rax); |
| 850 push(rbx); | |
| 851 push(rcx); | |
| 852 push(rdx); | |
| 0 | 853 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
| 854 get_method(rbx); | |
| 855 | |
| 856 // If the mdp is valid, it will point to a DataLayout header which is | |
| 857 // consistent with the bcp. The converse is highly probable also. | |
|
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858 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
| 304 | 859 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
| 860 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
| 861 cmpptr(rdx, rsi); | |
| 0 | 862 jcc(Assembler::equal, verify_continue); |
| 863 // rbx,: method | |
| 864 // rsi: bcp | |
| 865 // rcx: mdp | |
| 866 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
| 867 bind(verify_continue); | |
| 304 | 868 pop(rdx); |
| 869 pop(rcx); | |
| 870 pop(rbx); | |
| 871 pop(rax); | |
| 0 | 872 #endif // ASSERT |
| 873 } | |
| 874 | |
| 875 | |
| 876 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
| 304 | 877 // %%% this seems to be used to store counter data which is surely 32bits |
| 878 // however 64bit side stores 64 bits which seems wrong | |
| 0 | 879 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 880 Address data(mdp_in, constant); | |
| 304 | 881 movptr(data, value); |
| 0 | 882 } |
| 883 | |
| 884 | |
| 885 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 886 int constant, | |
| 887 bool decrement) { | |
| 888 // Counter address | |
| 889 Address data(mdp_in, constant); | |
| 890 | |
| 891 increment_mdp_data_at(data, decrement); | |
| 892 } | |
| 893 | |
| 894 | |
| 895 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
| 896 bool decrement) { | |
| 897 | |
| 898 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 899 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 900 | |
| 304 | 901 // %%% 64bit treats this as 64 bit which seems unlikely |
| 0 | 902 if (decrement) { |
| 903 // Decrement the register. Set condition codes. | |
| 904 addl(data, -DataLayout::counter_increment); | |
| 905 // If the decrement causes the counter to overflow, stay negative | |
| 906 Label L; | |
| 907 jcc(Assembler::negative, L); | |
| 908 addl(data, DataLayout::counter_increment); | |
| 909 bind(L); | |
| 910 } else { | |
| 911 assert(DataLayout::counter_increment == 1, | |
| 912 "flow-free idiom only works with 1"); | |
| 913 // Increment the register. Set carry flag. | |
| 914 addl(data, DataLayout::counter_increment); | |
| 915 // If the increment causes the counter to overflow, pull back by 1. | |
| 916 sbbl(data, 0); | |
| 917 } | |
| 918 } | |
| 919 | |
| 920 | |
| 921 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 922 Register reg, | |
| 923 int constant, | |
| 924 bool decrement) { | |
| 925 Address data(mdp_in, reg, Address::times_1, constant); | |
| 926 | |
| 927 increment_mdp_data_at(data, decrement); | |
| 928 } | |
| 929 | |
| 930 | |
| 931 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
| 932 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 933 int header_offset = in_bytes(DataLayout::header_offset()); | |
| 934 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
| 935 // Set the flag | |
| 936 orl(Address(mdp_in, header_offset), header_bits); | |
| 937 } | |
| 938 | |
| 939 | |
| 940 | |
| 941 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
| 942 int offset, | |
| 943 Register value, | |
| 944 Register test_value_out, | |
| 945 Label& not_equal_continue) { | |
| 946 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 947 if (test_value_out == noreg) { | |
| 304 | 948 cmpptr(value, Address(mdp_in, offset)); |
| 0 | 949 } else { |
| 950 // Put the test value into a register, so caller can use it: | |
| 304 | 951 movptr(test_value_out, Address(mdp_in, offset)); |
| 952 cmpptr(test_value_out, value); | |
| 0 | 953 } |
| 954 jcc(Assembler::notEqual, not_equal_continue); | |
| 955 } | |
| 956 | |
| 957 | |
| 958 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
| 959 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 960 Address disp_address(mdp_in, offset_of_disp); | |
| 304 | 961 addptr(mdp_in,disp_address); |
| 962 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 963 } |
| 964 | |
| 965 | |
| 966 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
| 967 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 968 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
| 304 | 969 addptr(mdp_in, disp_address); |
| 970 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 971 } |
| 972 | |
| 973 | |
| 974 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
| 975 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 976 addptr(mdp_in, constant); |
| 977 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 978 } |
| 979 | |
| 980 | |
| 981 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
| 982 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 983 push(return_bci); // save/restore across call_VM |
| 0 | 984 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
| 304 | 985 pop(return_bci); |
| 0 | 986 } |
| 987 | |
| 988 | |
| 989 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
| 990 if (ProfileInterpreter) { | |
| 991 Label profile_continue; | |
| 992 | |
| 993 // If no method data exists, go to profile_continue. | |
| 994 // Otherwise, assign to mdp | |
| 995 test_method_data_pointer(mdp, profile_continue); | |
| 996 | |
| 997 // We are taking a branch. Increment the taken count. | |
| 998 // We inline increment_mdp_data_at to return bumped_count in a register | |
| 999 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
| 1000 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
| 304 | 1001 |
| 1002 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
| 0 | 1003 movl(bumped_count,data); |
| 1004 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 1005 addl(bumped_count, DataLayout::counter_increment); | |
| 1006 sbbl(bumped_count, 0); | |
| 1007 movl(data,bumped_count); // Store back out | |
| 1008 | |
| 1009 // The method data pointer needs to be updated to reflect the new target. | |
| 1010 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
| 1011 bind (profile_continue); | |
| 1012 } | |
| 1013 } | |
| 1014 | |
| 1015 | |
| 1016 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
| 1017 if (ProfileInterpreter) { | |
| 1018 Label profile_continue; | |
| 1019 | |
| 1020 // If no method data exists, go to profile_continue. | |
| 1021 test_method_data_pointer(mdp, profile_continue); | |
| 1022 | |
| 1023 // We are taking a branch. Increment the not taken count. | |
| 1024 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
| 1025 | |
| 1026 // The method data pointer needs to be updated to correspond to the next bytecode | |
| 1027 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
| 1028 bind (profile_continue); | |
| 1029 } | |
| 1030 } | |
| 1031 | |
| 1032 | |
| 1033 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
| 1034 if (ProfileInterpreter) { | |
| 1035 Label profile_continue; | |
| 1036 | |
| 1037 // If no method data exists, go to profile_continue. | |
| 1038 test_method_data_pointer(mdp, profile_continue); | |
| 1039 | |
| 1040 // We are making a call. Increment the count. | |
| 1041 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1042 | |
| 1043 // The method data pointer needs to be updated to reflect the new target. | |
| 1044 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
| 1045 bind (profile_continue); | |
| 1046 } | |
| 1047 } | |
| 1048 | |
| 1049 | |
| 1050 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
| 1051 if (ProfileInterpreter) { | |
| 1052 Label profile_continue; | |
| 1053 | |
| 1054 // If no method data exists, go to profile_continue. | |
| 1055 test_method_data_pointer(mdp, profile_continue); | |
| 1056 | |
| 1057 // We are making a call. Increment the count. | |
| 1058 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1059 | |
| 1060 // The method data pointer needs to be updated to reflect the new target. | |
| 1061 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1062 bind (profile_continue); | |
| 1063 } | |
| 1064 } | |
| 1065 | |
| 1066 | |
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1067 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, |
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1068 Register reg2, |
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1069 bool receiver_can_be_null) { |
| 0 | 1070 if (ProfileInterpreter) { |
| 1071 Label profile_continue; | |
| 1072 | |
| 1073 // If no method data exists, go to profile_continue. | |
| 1074 test_method_data_pointer(mdp, profile_continue); | |
| 1075 | |
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1076 Label skip_receiver_profile; |
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1077 if (receiver_can_be_null) { |
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1078 Label not_null; |
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1079 testptr(receiver, receiver); |
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1080 jccb(Assembler::notZero, not_null); |
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1081 // We are making a call. Increment the count for null receiver. |
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1082 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1083 jmp(skip_receiver_profile); |
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1084 bind(not_null); |
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1085 } |
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1086 |
| 0 | 1087 // Record the receiver type. |
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1088 record_klass_in_profile(receiver, mdp, reg2, true); |
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1089 bind(skip_receiver_profile); |
| 0 | 1090 |
| 1091 // The method data pointer needs to be updated to reflect the new target. | |
| 1092 update_mdp_by_constant(mdp, | |
| 1093 in_bytes(VirtualCallData:: | |
| 1094 virtual_call_data_size())); | |
| 1095 bind(profile_continue); | |
| 1096 } | |
| 1097 } | |
| 1098 | |
| 1099 | |
| 1100 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1101 Register receiver, Register mdp, | |
|
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1102 Register reg2, int start_row, |
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1103 Label& done, bool is_virtual_call) { |
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1104 if (TypeProfileWidth == 0) { |
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1105 if (is_virtual_call) { |
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1106 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1107 } |
|
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1108 return; |
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1109 } |
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1110 |
| 0 | 1111 int last_row = VirtualCallData::row_limit() - 1; |
| 1112 assert(start_row <= last_row, "must be work left to do"); | |
| 1113 // Test this row for both the receiver and for null. | |
| 1114 // Take any of three different outcomes: | |
| 1115 // 1. found receiver => increment count and goto done | |
| 1116 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1117 // 3. found something else => keep looking for cases 1 and 2 | |
| 1118 // Case 3 is handled by a recursive call. | |
| 1119 for (int row = start_row; row <= last_row; row++) { | |
| 1120 Label next_test; | |
| 1121 bool test_for_null_also = (row == start_row); | |
| 1122 | |
| 1123 // See if the receiver is receiver[n]. | |
| 1124 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1125 test_mdp_data_at(mdp, recvr_offset, receiver, | |
| 1126 (test_for_null_also ? reg2 : noreg), | |
| 1127 next_test); | |
| 1128 // (Reg2 now contains the receiver from the CallData.) | |
| 1129 | |
| 1130 // The receiver is receiver[n]. Increment count[n]. | |
| 1131 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1132 increment_mdp_data_at(mdp, count_offset); | |
| 1133 jmp(done); | |
| 1134 bind(next_test); | |
| 1135 | |
| 1136 if (row == start_row) { | |
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1137 Label found_null; |
| 0 | 1138 // Failed the equality check on receiver[n]... Test for null. |
| 304 | 1139 testptr(reg2, reg2); |
| 0 | 1140 if (start_row == last_row) { |
| 1141 // The only thing left to do is handle the null case. | |
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1142 if (is_virtual_call) { |
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1143 jccb(Assembler::zero, found_null); |
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1144 // Receiver did not match any saved receiver and there is no empty row for it. |
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1145 // Increment total counter to indicate polymorphic case. |
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1146 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1147 jmp(done); |
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1148 bind(found_null); |
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1149 } else { |
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1150 jcc(Assembler::notZero, done); |
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1151 } |
| 0 | 1152 break; |
| 1153 } | |
| 1154 // Since null is rare, make it be the branch-taken case. | |
| 1155 jcc(Assembler::zero, found_null); | |
| 1156 | |
| 1157 // Put all the "Case 3" tests here. | |
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1158 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
| 0 | 1159 |
| 1160 // Found a null. Keep searching for a matching receiver, | |
| 1161 // but remember that this is an empty (unused) slot. | |
| 1162 bind(found_null); | |
| 1163 } | |
| 1164 } | |
| 1165 | |
| 1166 // In the fall-through case, we found no matching receiver, but we | |
| 1167 // observed the receiver[start_row] is NULL. | |
| 1168 | |
| 1169 // Fill in the receiver field and increment the count. | |
| 1170 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1171 set_mdp_data_at(mdp, recvr_offset, receiver); | |
| 1172 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 304 | 1173 movptr(reg2, (int32_t)DataLayout::counter_increment); |
| 0 | 1174 set_mdp_data_at(mdp, count_offset, reg2); |
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1175 if (start_row > 0) { |
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1176 jmp(done); |
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1177 } |
| 0 | 1178 } |
| 1179 | |
| 1180 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
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1181 Register mdp, Register reg2, |
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1182 bool is_virtual_call) { |
| 0 | 1183 assert(ProfileInterpreter, "must be profiling"); |
| 1184 Label done; | |
| 1185 | |
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1186 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
| 0 | 1187 |
| 1188 bind (done); | |
| 1189 } | |
| 1190 | |
| 1191 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
| 1192 if (ProfileInterpreter) { | |
| 1193 Label profile_continue; | |
| 1194 uint row; | |
| 1195 | |
| 1196 // If no method data exists, go to profile_continue. | |
| 1197 test_method_data_pointer(mdp, profile_continue); | |
| 1198 | |
| 1199 // Update the total ret count. | |
| 1200 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1201 | |
| 1202 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1203 Label next_test; | |
| 1204 | |
| 1205 // See if return_bci is equal to bci[n]: | |
| 1206 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
| 1207 noreg, next_test); | |
| 1208 | |
| 1209 // return_bci is equal to bci[n]. Increment the count. | |
| 1210 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
| 1211 | |
| 1212 // The method data pointer needs to be updated to reflect the new target. | |
| 1213 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
| 1214 jmp(profile_continue); | |
| 1215 bind(next_test); | |
| 1216 } | |
| 1217 | |
| 1218 update_mdp_for_ret(return_bci); | |
| 1219 | |
| 1220 bind (profile_continue); | |
| 1221 } | |
| 1222 } | |
| 1223 | |
| 1224 | |
| 1225 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
| 1226 if (ProfileInterpreter) { | |
| 1227 Label profile_continue; | |
| 1228 | |
| 1229 // If no method data exists, go to profile_continue. | |
| 1230 test_method_data_pointer(mdp, profile_continue); | |
| 1231 | |
|
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1232 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1233 |
| 0 | 1234 // The method data pointer needs to be updated. |
| 1235 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1236 if (TypeProfileCasts) { | |
| 1237 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1238 } | |
| 1239 update_mdp_by_constant(mdp, mdp_delta); | |
| 1240 | |
| 1241 bind (profile_continue); | |
| 1242 } | |
| 1243 } | |
| 1244 | |
| 1245 | |
| 1246 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
| 1247 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1248 Label profile_continue; | |
| 1249 | |
| 1250 // If no method data exists, go to profile_continue. | |
| 1251 test_method_data_pointer(mdp, profile_continue); | |
| 1252 | |
| 1253 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1254 // Back up the address, since we have already bumped the mdp. | |
| 1255 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1256 | |
| 1257 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1258 increment_mdp_data_at(mdp, count_offset, true); | |
| 1259 | |
| 1260 bind (profile_continue); | |
| 1261 } | |
| 1262 } | |
| 1263 | |
| 1264 | |
| 1265 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
| 1266 { | |
| 1267 if (ProfileInterpreter) { | |
| 1268 Label profile_continue; | |
| 1269 | |
| 1270 // If no method data exists, go to profile_continue. | |
| 1271 test_method_data_pointer(mdp, profile_continue); | |
| 1272 | |
| 1273 // The method data pointer needs to be updated. | |
| 1274 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1275 if (TypeProfileCasts) { | |
| 1276 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1277 | |
| 1278 // Record the object type. | |
|
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1279 record_klass_in_profile(klass, mdp, reg2, false); |
| 0 | 1280 assert(reg2 == rdi, "we know how to fix this blown reg"); |
| 1281 restore_locals(); // Restore EDI | |
| 1282 } | |
| 1283 update_mdp_by_constant(mdp, mdp_delta); | |
| 1284 | |
| 1285 bind(profile_continue); | |
| 1286 } | |
| 1287 } | |
| 1288 | |
| 1289 | |
| 1290 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
| 1291 if (ProfileInterpreter) { | |
| 1292 Label profile_continue; | |
| 1293 | |
| 1294 // If no method data exists, go to profile_continue. | |
| 1295 test_method_data_pointer(mdp, profile_continue); | |
| 1296 | |
| 1297 // Update the default case count | |
| 1298 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
| 1299 | |
| 1300 // The method data pointer needs to be updated. | |
| 1301 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
| 1302 | |
| 1303 bind (profile_continue); | |
| 1304 } | |
| 1305 } | |
| 1306 | |
| 1307 | |
| 1308 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
| 1309 if (ProfileInterpreter) { | |
| 1310 Label profile_continue; | |
| 1311 | |
| 1312 // If no method data exists, go to profile_continue. | |
| 1313 test_method_data_pointer(mdp, profile_continue); | |
| 1314 | |
| 1315 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
| 304 | 1316 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size())); |
| 1317 // index is positive and so should have correct value if this code were | |
| 1318 // used on 64bits | |
| 1319 imulptr(index, reg2); | |
| 1320 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
| 0 | 1321 |
| 1322 // Update the case count | |
| 1323 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
| 1324 | |
| 1325 // The method data pointer needs to be updated. | |
| 1326 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
| 1327 | |
| 1328 bind (profile_continue); | |
| 1329 } | |
| 1330 } | |
| 1331 | |
| 1332 #endif // !CC_INTERP | |
| 1333 | |
| 1334 | |
| 1335 | |
| 1336 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
| 1337 if (state == atos) MacroAssembler::verify_oop(reg); | |
| 1338 } | |
| 1339 | |
| 1340 | |
| 1341 #ifndef CC_INTERP | |
| 1342 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 1343 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
| 1344 } | |
| 1345 | |
| 1346 #endif /* CC_INTERP */ | |
| 1347 | |
| 1348 | |
| 1349 void InterpreterMacroAssembler::notify_method_entry() { | |
| 1350 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1351 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1352 // the code to check if the event should be sent. | |
| 1353 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1354 Label L; | |
| 1355 get_thread(rcx); | |
| 1356 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1357 testl(rcx,rcx); | |
| 1358 jcc(Assembler::zero, L); | |
| 1359 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
| 1360 bind(L); | |
| 1361 } | |
| 1362 | |
| 1363 { | |
| 1364 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 1365 get_thread(rcx); | |
| 1366 get_method(rbx); | |
| 1367 call_VM_leaf( | |
| 1368 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
| 1369 } | |
|
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1370 |
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1371 // RedefineClasses() tracing support for obsolete method entry |
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1372 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1373 get_thread(rcx); |
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1374 get_method(rbx); |
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1375 call_VM_leaf( |
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1376 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1377 rcx, rbx); |
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1378 } |
| 0 | 1379 } |
| 1380 | |
| 1381 | |
| 1382 void InterpreterMacroAssembler::notify_method_exit( | |
| 1383 TosState state, NotifyMethodExitMode mode) { | |
| 1384 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1385 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1386 // the code to check if the event should be sent. | |
| 1387 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
| 1388 Label L; | |
| 1389 // Note: frame::interpreter_frame_result has a dependency on how the | |
| 1390 // method result is saved across the call to post_method_exit. If this | |
| 1391 // is changed then the interpreter_frame_result implementation will | |
| 1392 // need to be updated too. | |
| 1393 | |
| 1394 // For c++ interpreter the result is always stored at a known location in the frame | |
| 1395 // template interpreter will leave it on the top of the stack. | |
| 1396 NOT_CC_INTERP(push(state);) | |
| 1397 get_thread(rcx); | |
| 1398 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1399 testl(rcx,rcx); | |
| 1400 jcc(Assembler::zero, L); | |
| 1401 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
| 1402 bind(L); | |
| 1403 NOT_CC_INTERP(pop(state);) | |
| 1404 } | |
| 1405 | |
| 1406 { | |
| 1407 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 304 | 1408 NOT_CC_INTERP(push(state)); |
| 0 | 1409 get_thread(rbx); |
| 1410 get_method(rcx); | |
| 1411 call_VM_leaf( | |
| 1412 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
| 1413 rbx, rcx); | |
| 304 | 1414 NOT_CC_INTERP(pop(state)); |
| 0 | 1415 } |
| 1416 } | |
| 1783 | 1417 |
| 1418 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
| 1419 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
| 1420 int increment, int mask, | |
| 1421 Register scratch, bool preloaded, | |
| 1422 Condition cond, Label* where) { | |
| 1423 if (!preloaded) { | |
| 1424 movl(scratch, counter_addr); | |
| 1425 } | |
| 1426 incrementl(scratch, increment); | |
| 1427 movl(counter_addr, scratch); | |
| 1428 andl(scratch, mask); | |
| 1429 jcc(cond, *where); | |
| 1430 } |