Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 612:afa80fa86d22
Merge
| author | dcubed |
|---|---|
| date | Mon, 02 Mar 2009 14:43:36 -0700 |
| parents | dc3ad84615cf 70998f2e05ef |
| children | 2f2f54ed12ce |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 337 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_interp_masm_x86_32.cpp.incl" | |
| 27 | |
| 28 | |
| 29 // Implementation of InterpreterMacroAssembler | |
| 30 #ifdef CC_INTERP | |
| 31 void InterpreterMacroAssembler::get_method(Register reg) { | |
| 304 | 32 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize))); |
| 33 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); | |
| 0 | 34 } |
| 35 #endif // CC_INTERP | |
| 36 | |
| 37 | |
| 38 #ifndef CC_INTERP | |
| 39 void InterpreterMacroAssembler::call_VM_leaf_base( | |
| 40 address entry_point, | |
| 41 int number_of_arguments | |
| 42 ) { | |
| 43 // interpreter specific | |
| 44 // | |
| 45 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer | |
| 46 // since these are callee saved registers and no blocking/ | |
| 47 // GC can happen in leaf calls. | |
| 48 // Further Note: DO NOT save/restore bcp/locals. If a caller has | |
| 49 // already saved them so that it can use rsi/rdi as temporaries | |
| 50 // then a save/restore here will DESTROY the copy the caller | |
| 51 // saved! There used to be a save_bcp() that only happened in | |
| 52 // the ASSERT path (no restore_bcp). Which caused bizarre failures | |
| 53 // when jvm built with ASSERTs. | |
| 54 #ifdef ASSERT | |
| 55 { Label L; | |
| 304 | 56 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 57 jcc(Assembler::equal, L); |
| 58 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL"); | |
| 59 bind(L); | |
| 60 } | |
| 61 #endif | |
| 62 // super call | |
| 63 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
| 64 // interpreter specific | |
| 65 | |
| 66 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals | |
| 67 // but since they may not have been saved (and we don't want to | |
| 68 // save them here (see note above) the assert is invalid. | |
| 69 } | |
| 70 | |
| 71 | |
| 72 void InterpreterMacroAssembler::call_VM_base( | |
| 73 Register oop_result, | |
| 74 Register java_thread, | |
| 75 Register last_java_sp, | |
| 76 address entry_point, | |
| 77 int number_of_arguments, | |
| 78 bool check_exceptions | |
| 79 ) { | |
| 80 #ifdef ASSERT | |
| 81 { Label L; | |
| 304 | 82 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 83 jcc(Assembler::equal, L); |
| 84 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL"); | |
| 85 bind(L); | |
| 86 } | |
| 87 #endif /* ASSERT */ | |
| 88 // interpreter specific | |
| 89 // | |
| 90 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
| 91 // really make a difference for these runtime calls, since they are | |
| 92 // slow anyway. Btw., bcp must be saved/restored since it may change | |
| 93 // due to GC. | |
| 94 assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
| 95 save_bcp(); | |
| 96 // super call | |
| 97 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); | |
| 98 // interpreter specific | |
| 99 restore_bcp(); | |
| 100 restore_locals(); | |
| 101 } | |
| 102 | |
| 103 | |
| 104 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
| 105 if (JvmtiExport::can_pop_frame()) { | |
| 106 Label L; | |
| 107 // Initiate popframe handling only if it is not already being processed. If the flag | |
| 108 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
| 109 // handling - we don't want to reenter. | |
| 110 Register pop_cond = java_thread; // Not clear if any other register is available... | |
| 111 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset())); | |
| 112 testl(pop_cond, JavaThread::popframe_pending_bit); | |
| 113 jcc(Assembler::zero, L); | |
| 114 testl(pop_cond, JavaThread::popframe_processing_bit); | |
| 115 jcc(Assembler::notZero, L); | |
| 116 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
| 117 // address of the same-named entrypoint in the generated interpreter code. | |
| 118 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
| 119 jmp(rax); | |
| 120 bind(L); | |
| 121 get_thread(java_thread); | |
| 122 } | |
| 123 } | |
| 124 | |
| 125 | |
| 126 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
| 127 get_thread(rcx); | |
| 128 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); | |
| 129 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset()); | |
| 130 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset()); | |
| 131 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset()); | |
| 132 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset() | |
| 133 + in_ByteSize(wordSize)); | |
| 134 switch (state) { | |
| 304 | 135 case atos: movptr(rax, oop_addr); |
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136 movptr(oop_addr, NULL_WORD); |
| 0 | 137 verify_oop(rax, state); break; |
| 304 | 138 case ltos: |
| 139 movl(rdx, val_addr1); // fall through | |
| 0 | 140 case btos: // fall through |
| 141 case ctos: // fall through | |
| 142 case stos: // fall through | |
| 143 case itos: movl(rax, val_addr); break; | |
| 144 case ftos: fld_s(val_addr); break; | |
| 145 case dtos: fld_d(val_addr); break; | |
| 146 case vtos: /* nothing to do */ break; | |
| 147 default : ShouldNotReachHere(); | |
| 148 } | |
| 149 // Clean up tos value in the thread object | |
| 304 | 150 movl(tos_addr, (int32_t) ilgl); |
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151 movptr(val_addr, NULL_WORD); |
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152 NOT_LP64(movptr(val_addr1, NULL_WORD)); |
| 0 | 153 } |
| 154 | |
| 155 | |
| 156 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
| 157 if (JvmtiExport::can_force_early_return()) { | |
| 158 Label L; | |
| 159 Register tmp = java_thread; | |
| 304 | 160 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset())); |
| 161 testptr(tmp, tmp); | |
| 0 | 162 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
| 163 | |
| 164 // Initiate earlyret handling only if it is not already being processed. | |
| 165 // If the flag has the earlyret_processing bit set, it means that this code | |
| 166 // is called *during* earlyret handling - we don't want to reenter. | |
| 167 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset())); | |
| 168 cmpl(tmp, JvmtiThreadState::earlyret_pending); | |
| 169 jcc(Assembler::notEqual, L); | |
| 170 | |
| 171 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
| 172 // same-named entrypoint in the generated interpreter code. | |
| 173 get_thread(java_thread); | |
| 304 | 174 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 175 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset())); |
| 176 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1); | |
| 177 jmp(rax); | |
| 178 bind(L); | |
| 179 get_thread(java_thread); | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 | |
| 184 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) { | |
| 185 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
| 186 movl(reg, Address(rsi, bcp_offset)); | |
| 304 | 187 bswapl(reg); |
| 0 | 188 shrl(reg, 16); |
| 189 } | |
| 190 | |
| 191 | |
| 192 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset) { | |
| 193 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
| 194 assert(cache != index, "must use different registers"); | |
| 195 load_unsigned_word(index, Address(rsi, bcp_offset)); | |
| 304 | 196 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 197 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
| 304 | 198 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index |
| 0 | 199 } |
| 200 | |
| 201 | |
| 202 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset) { | |
| 203 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
| 204 assert(cache != tmp, "must use different register"); | |
| 205 load_unsigned_word(tmp, Address(rsi, bcp_offset)); | |
| 206 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); | |
| 207 // convert from field index to ConstantPoolCacheEntry index | |
| 208 // and from word offset to byte offset | |
| 209 shll(tmp, 2 + LogBytesPerWord); | |
| 304 | 210 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 211 // skip past the header |
| 304 | 212 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
| 213 addptr(cache, tmp); // construct pointer to cache entry | |
| 0 | 214 } |
| 215 | |
| 216 | |
| 217 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
| 218 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
| 219 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
| 220 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
| 221 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
| 222 assert( Rsub_klass != rcx, "rcx holds 2ndary super array length" ); | |
| 223 assert( Rsub_klass != rdi, "rdi holds 2ndary super array scan ptr" ); | |
| 224 Label not_subtype, loop; | |
| 225 | |
| 226 // Profile the not-null value's klass. | |
| 227 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, rdi | |
| 228 | |
| 229 // Load the super-klass's check offset into ECX | |
| 230 movl( rcx, Address(rax, sizeof(oopDesc) + Klass::super_check_offset_offset_in_bytes() ) ); | |
| 231 // Load from the sub-klass's super-class display list, or a 1-word cache of | |
| 232 // the secondary superclass list, or a failing value with a sentinel offset | |
| 233 // if the super-klass is an interface or exceptionally deep in the Java | |
| 234 // hierarchy and we have to scan the secondary superclass list the hard way. | |
| 235 // See if we get an immediate positive hit | |
| 304 | 236 cmpptr( rax, Address(Rsub_klass,rcx,Address::times_1) ); |
| 0 | 237 jcc( Assembler::equal,ok_is_subtype ); |
| 238 | |
| 239 // Check for immediate negative hit | |
| 240 cmpl( rcx, sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() ); | |
| 241 jcc( Assembler::notEqual, not_subtype ); | |
| 242 // Check for self | |
| 304 | 243 cmpptr( Rsub_klass, rax ); |
| 0 | 244 jcc( Assembler::equal, ok_is_subtype ); |
| 245 | |
| 246 // Now do a linear scan of the secondary super-klass chain. | |
| 304 | 247 movptr( rdi, Address(Rsub_klass, sizeof(oopDesc) + Klass::secondary_supers_offset_in_bytes()) ); |
| 0 | 248 // EDI holds the objArrayOop of secondary supers. |
| 249 movl( rcx, Address(rdi, arrayOopDesc::length_offset_in_bytes()));// Load the array length | |
| 250 // Skip to start of data; also clear Z flag incase ECX is zero | |
| 304 | 251 addptr( rdi, arrayOopDesc::base_offset_in_bytes(T_OBJECT) ); |
| 0 | 252 // Scan ECX words at [EDI] for occurance of EAX |
| 253 // Set NZ/Z based on last compare | |
| 254 repne_scan(); | |
| 255 restore_locals(); // Restore EDI; Must not blow flags | |
| 256 // Not equal? | |
| 257 jcc( Assembler::notEqual, not_subtype ); | |
| 258 // Must be equal but missed in cache. Update cache. | |
| 304 | 259 movptr( Address(Rsub_klass, sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes()), rax ); |
| 0 | 260 jmp( ok_is_subtype ); |
| 261 | |
| 262 bind(not_subtype); | |
| 263 profile_typecheck_failed(rcx); // blows rcx | |
| 264 } | |
| 265 | |
| 266 void InterpreterMacroAssembler::f2ieee() { | |
| 267 if (IEEEPrecision) { | |
| 268 fstp_s(Address(rsp, 0)); | |
| 269 fld_s(Address(rsp, 0)); | |
| 270 } | |
| 271 } | |
| 272 | |
| 273 | |
| 274 void InterpreterMacroAssembler::d2ieee() { | |
| 275 if (IEEEPrecision) { | |
| 276 fstp_d(Address(rsp, 0)); | |
| 277 fld_d(Address(rsp, 0)); | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 // Java Expression Stack | |
| 282 | |
| 283 #ifdef ASSERT | |
| 284 void InterpreterMacroAssembler::verify_stack_tag(frame::Tag t) { | |
| 285 if (TaggedStackInterpreter) { | |
| 286 Label okay; | |
| 304 | 287 cmpptr(Address(rsp, wordSize), (int32_t)t); |
| 0 | 288 jcc(Assembler::equal, okay); |
| 289 // Also compare if the stack value is zero, then the tag might | |
| 290 // not have been set coming from deopt. | |
| 304 | 291 cmpptr(Address(rsp, 0), 0); |
| 0 | 292 jcc(Assembler::equal, okay); |
| 293 stop("Java Expression stack tag value is bad"); | |
| 294 bind(okay); | |
| 295 } | |
| 296 } | |
| 297 #endif // ASSERT | |
| 298 | |
| 299 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 300 debug_only(verify_stack_tag(frame::TagReference)); | |
| 304 | 301 pop(r); |
| 302 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 303 } |
| 304 | |
| 305 void InterpreterMacroAssembler::pop_ptr(Register r, Register tag) { | |
| 304 | 306 pop(r); |
| 0 | 307 // Tag may not be reference for jsr, can be returnAddress |
| 304 | 308 if (TaggedStackInterpreter) pop(tag); |
| 0 | 309 } |
| 310 | |
| 311 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 312 debug_only(verify_stack_tag(frame::TagValue)); | |
| 304 | 313 pop(r); |
| 314 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 315 } |
| 316 | |
| 317 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
| 318 debug_only(verify_stack_tag(frame::TagValue)); | |
| 304 | 319 pop(lo); |
| 320 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 321 debug_only(verify_stack_tag(frame::TagValue)); |
| 304 | 322 pop(hi); |
| 323 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 324 } |
| 325 | |
| 326 void InterpreterMacroAssembler::pop_f() { | |
| 327 debug_only(verify_stack_tag(frame::TagValue)); | |
| 328 fld_s(Address(rsp, 0)); | |
| 304 | 329 addptr(rsp, 1 * wordSize); |
| 330 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 331 } |
| 332 | |
| 333 void InterpreterMacroAssembler::pop_d() { | |
| 334 // Write double to stack contiguously and load into ST0 | |
| 335 pop_dtos_to_rsp(); | |
| 336 fld_d(Address(rsp, 0)); | |
| 304 | 337 addptr(rsp, 2 * wordSize); |
| 0 | 338 } |
| 339 | |
| 340 | |
| 341 // Pop the top of the java expression stack to execution stack (which | |
| 342 // happens to be the same place). | |
| 343 void InterpreterMacroAssembler::pop_dtos_to_rsp() { | |
| 344 if (TaggedStackInterpreter) { | |
| 345 // Pop double value into scratch registers | |
| 346 debug_only(verify_stack_tag(frame::TagValue)); | |
| 304 | 347 pop(rax); |
| 348 addptr(rsp, 1* wordSize); | |
| 0 | 349 debug_only(verify_stack_tag(frame::TagValue)); |
| 304 | 350 pop(rdx); |
| 351 addptr(rsp, 1* wordSize); | |
| 352 push(rdx); | |
| 353 push(rax); | |
| 0 | 354 } |
| 355 } | |
| 356 | |
| 357 void InterpreterMacroAssembler::pop_ftos_to_rsp() { | |
| 358 if (TaggedStackInterpreter) { | |
| 359 debug_only(verify_stack_tag(frame::TagValue)); | |
| 304 | 360 pop(rax); |
| 361 addptr(rsp, 1 * wordSize); | |
| 362 push(rax); // ftos is at rsp | |
| 0 | 363 } |
| 364 } | |
| 365 | |
| 366 void InterpreterMacroAssembler::pop(TosState state) { | |
| 367 switch (state) { | |
| 368 case atos: pop_ptr(rax); break; | |
| 369 case btos: // fall through | |
| 370 case ctos: // fall through | |
| 371 case stos: // fall through | |
| 372 case itos: pop_i(rax); break; | |
| 373 case ltos: pop_l(rax, rdx); break; | |
| 374 case ftos: pop_f(); break; | |
| 375 case dtos: pop_d(); break; | |
| 376 case vtos: /* nothing to do */ break; | |
| 377 default : ShouldNotReachHere(); | |
| 378 } | |
| 379 verify_oop(rax, state); | |
| 380 } | |
| 381 | |
| 382 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 304 | 383 if (TaggedStackInterpreter) push(frame::TagReference); |
| 384 push(r); | |
| 0 | 385 } |
| 386 | |
| 387 void InterpreterMacroAssembler::push_ptr(Register r, Register tag) { | |
| 304 | 388 if (TaggedStackInterpreter) push(tag); // tag first |
| 389 push(r); | |
| 0 | 390 } |
| 391 | |
| 392 void InterpreterMacroAssembler::push_i(Register r) { | |
| 304 | 393 if (TaggedStackInterpreter) push(frame::TagValue); |
| 394 push(r); | |
| 0 | 395 } |
| 396 | |
| 397 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
| 304 | 398 if (TaggedStackInterpreter) push(frame::TagValue); |
| 399 push(hi); | |
| 400 if (TaggedStackInterpreter) push(frame::TagValue); | |
| 401 push(lo); | |
| 0 | 402 } |
| 403 | |
| 404 void InterpreterMacroAssembler::push_f() { | |
| 304 | 405 if (TaggedStackInterpreter) push(frame::TagValue); |
| 0 | 406 // Do not schedule for no AGI! Never write beyond rsp! |
| 304 | 407 subptr(rsp, 1 * wordSize); |
| 0 | 408 fstp_s(Address(rsp, 0)); |
| 409 } | |
| 410 | |
| 411 void InterpreterMacroAssembler::push_d(Register r) { | |
| 412 if (TaggedStackInterpreter) { | |
| 413 // Double values are stored as: | |
| 414 // tag | |
| 415 // high | |
| 416 // tag | |
| 417 // low | |
| 304 | 418 push(frame::TagValue); |
| 419 subptr(rsp, 3 * wordSize); | |
| 0 | 420 fstp_d(Address(rsp, 0)); |
| 421 // move high word up to slot n-1 | |
| 422 movl(r, Address(rsp, 1*wordSize)); | |
| 423 movl(Address(rsp, 2*wordSize), r); | |
| 424 // move tag | |
| 425 movl(Address(rsp, 1*wordSize), frame::TagValue); | |
| 426 } else { | |
| 427 // Do not schedule for no AGI! Never write beyond rsp! | |
| 304 | 428 subptr(rsp, 2 * wordSize); |
| 0 | 429 fstp_d(Address(rsp, 0)); |
| 430 } | |
| 431 } | |
| 432 | |
| 433 | |
| 434 void InterpreterMacroAssembler::push(TosState state) { | |
| 435 verify_oop(rax, state); | |
| 436 switch (state) { | |
| 437 case atos: push_ptr(rax); break; | |
| 438 case btos: // fall through | |
| 439 case ctos: // fall through | |
| 440 case stos: // fall through | |
| 441 case itos: push_i(rax); break; | |
| 442 case ltos: push_l(rax, rdx); break; | |
| 443 case ftos: push_f(); break; | |
| 444 case dtos: push_d(rax); break; | |
| 445 case vtos: /* nothing to do */ break; | |
| 446 default : ShouldNotReachHere(); | |
| 447 } | |
| 448 } | |
| 449 | |
| 450 | |
| 451 // Tagged stack helpers for swap and dup | |
| 452 void InterpreterMacroAssembler::load_ptr_and_tag(int n, Register val, | |
| 453 Register tag) { | |
| 304 | 454 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
| 0 | 455 if (TaggedStackInterpreter) { |
| 304 | 456 movptr(tag, Address(rsp, Interpreter::expr_tag_offset_in_bytes(n))); |
| 0 | 457 } |
| 458 } | |
| 459 | |
| 460 void InterpreterMacroAssembler::store_ptr_and_tag(int n, Register val, | |
| 461 Register tag) { | |
| 304 | 462 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); |
| 0 | 463 if (TaggedStackInterpreter) { |
| 304 | 464 movptr(Address(rsp, Interpreter::expr_tag_offset_in_bytes(n)), tag); |
| 0 | 465 } |
| 466 } | |
| 467 | |
| 468 | |
| 469 // Tagged local support | |
| 470 void InterpreterMacroAssembler::tag_local(frame::Tag tag, int n) { | |
| 471 if (TaggedStackInterpreter) { | |
| 472 if (tag == frame::TagCategory2) { | |
| 304 | 473 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)frame::TagValue); |
| 474 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)frame::TagValue); | |
| 0 | 475 } else { |
| 304 | 476 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)tag); |
| 0 | 477 } |
| 478 } | |
| 479 } | |
| 480 | |
| 481 void InterpreterMacroAssembler::tag_local(frame::Tag tag, Register idx) { | |
| 482 if (TaggedStackInterpreter) { | |
| 483 if (tag == frame::TagCategory2) { | |
| 304 | 484 movptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 485 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)frame::TagValue); | |
| 486 movptr(Address(rdi, idx, Interpreter::stackElementScale(), | |
| 487 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)frame::TagValue); | |
| 0 | 488 } else { |
| 304 | 489 movptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 490 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)tag); | |
| 0 | 491 } |
| 492 } | |
| 493 } | |
| 494 | |
| 495 void InterpreterMacroAssembler::tag_local(Register tag, Register idx) { | |
| 496 if (TaggedStackInterpreter) { | |
| 497 // can only be TagValue or TagReference | |
| 304 | 498 movptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 0 | 499 Interpreter::local_tag_offset_in_bytes(0)), tag); |
| 500 } | |
| 501 } | |
| 502 | |
| 503 | |
| 504 void InterpreterMacroAssembler::tag_local(Register tag, int n) { | |
| 505 if (TaggedStackInterpreter) { | |
| 506 // can only be TagValue or TagReference | |
| 304 | 507 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), tag); |
| 0 | 508 } |
| 509 } | |
| 510 | |
| 511 #ifdef ASSERT | |
| 512 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, int n) { | |
| 513 if (TaggedStackInterpreter) { | |
| 514 frame::Tag t = tag; | |
| 515 if (tag == frame::TagCategory2) { | |
| 516 Label nbl; | |
| 517 t = frame::TagValue; // change to what is stored in locals | |
| 304 | 518 cmpptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)t); |
| 0 | 519 jcc(Assembler::equal, nbl); |
| 520 stop("Local tag is bad for long/double"); | |
| 521 bind(nbl); | |
| 522 } | |
| 523 Label notBad; | |
| 304 | 524 cmpptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)t); |
| 0 | 525 jcc(Assembler::equal, notBad); |
| 526 // Also compare if the local value is zero, then the tag might | |
| 527 // not have been set coming from deopt. | |
| 304 | 528 cmpptr(Address(rdi, Interpreter::local_offset_in_bytes(n)), 0); |
| 0 | 529 jcc(Assembler::equal, notBad); |
| 530 stop("Local tag is bad"); | |
| 531 bind(notBad); | |
| 532 } | |
| 533 } | |
| 534 | |
| 535 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, Register idx) { | |
| 536 if (TaggedStackInterpreter) { | |
| 537 frame::Tag t = tag; | |
| 538 if (tag == frame::TagCategory2) { | |
| 539 Label nbl; | |
| 540 t = frame::TagValue; // change to what is stored in locals | |
| 304 | 541 cmpptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 542 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)t); | |
| 0 | 543 jcc(Assembler::equal, nbl); |
| 544 stop("Local tag is bad for long/double"); | |
| 545 bind(nbl); | |
| 546 } | |
| 547 Label notBad; | |
| 548 cmpl(Address(rdi, idx, Interpreter::stackElementScale(), | |
| 304 | 549 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)t); |
| 0 | 550 jcc(Assembler::equal, notBad); |
| 551 // Also compare if the local value is zero, then the tag might | |
| 552 // not have been set coming from deopt. | |
| 304 | 553 cmpptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 0 | 554 Interpreter::local_offset_in_bytes(0)), 0); |
| 555 jcc(Assembler::equal, notBad); | |
| 556 stop("Local tag is bad"); | |
| 557 bind(notBad); | |
| 558 | |
| 559 } | |
| 560 } | |
| 561 #endif // ASSERT | |
| 562 | |
| 563 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) { | |
| 564 MacroAssembler::call_VM_leaf_base(entry_point, 0); | |
| 565 } | |
| 566 | |
| 567 | |
| 568 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) { | |
| 304 | 569 push(arg_1); |
| 0 | 570 MacroAssembler::call_VM_leaf_base(entry_point, 1); |
| 571 } | |
| 572 | |
| 573 | |
| 574 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) { | |
| 304 | 575 push(arg_2); |
| 576 push(arg_1); | |
| 0 | 577 MacroAssembler::call_VM_leaf_base(entry_point, 2); |
| 578 } | |
| 579 | |
| 580 | |
| 581 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) { | |
| 304 | 582 push(arg_3); |
| 583 push(arg_2); | |
| 584 push(arg_1); | |
| 0 | 585 MacroAssembler::call_VM_leaf_base(entry_point, 3); |
| 586 } | |
| 587 | |
| 588 | |
| 589 // Jump to from_interpreted entry of a call unless single stepping is possible | |
| 590 // in this thread in which case we must call the i2i entry | |
| 591 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
| 592 // set sender sp | |
| 304 | 593 lea(rsi, Address(rsp, wordSize)); |
| 0 | 594 // record last_sp |
| 304 | 595 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
| 0 | 596 |
| 597 if (JvmtiExport::can_post_interpreter_events()) { | |
| 598 Label run_compiled_code; | |
| 599 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 600 // compiled code in threads for which the event is enabled. Check here for | |
| 601 // interp_only_mode if these events CAN be enabled. | |
| 602 get_thread(temp); | |
| 603 // interp_only is an int, on little endian it is sufficient to test the byte only | |
| 604 // Is a cmpl faster (ce | |
| 605 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); | |
| 606 jcc(Assembler::zero, run_compiled_code); | |
| 607 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); | |
| 608 bind(run_compiled_code); | |
| 609 } | |
| 610 | |
| 611 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
| 612 | |
| 613 } | |
| 614 | |
| 615 | |
| 616 // The following two routines provide a hook so that an implementation | |
| 617 // can schedule the dispatch in two parts. Intel does not do this. | |
| 618 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
| 619 // Nothing Intel-specific to be done here. | |
| 620 } | |
| 621 | |
| 622 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
| 623 dispatch_next(state, step); | |
| 624 } | |
| 625 | |
| 626 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
| 627 bool verifyoop) { | |
| 628 verify_FPU(1, state); | |
| 629 if (VerifyActivationFrameSize) { | |
| 630 Label L; | |
| 304 | 631 mov(rcx, rbp); |
| 632 subptr(rcx, rsp); | |
| 0 | 633 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
| 304 | 634 cmpptr(rcx, min_frame_size); |
| 0 | 635 jcc(Assembler::greaterEqual, L); |
| 636 stop("broken stack frame"); | |
| 637 bind(L); | |
| 638 } | |
| 639 if (verifyoop) verify_oop(rax, state); | |
| 304 | 640 Address index(noreg, rbx, Address::times_ptr); |
| 0 | 641 ExternalAddress tbl((address)table); |
| 642 ArrayAddress dispatch(tbl, index); | |
| 643 jump(dispatch); | |
| 644 } | |
| 645 | |
| 646 | |
| 647 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
| 648 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 649 } | |
| 650 | |
| 651 | |
| 652 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
| 653 dispatch_base(state, Interpreter::normal_table(state)); | |
| 654 } | |
| 655 | |
| 656 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
| 657 dispatch_base(state, Interpreter::normal_table(state), false); | |
| 658 } | |
| 659 | |
| 660 | |
| 661 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
| 662 // load next bytecode (load before advancing rsi to prevent AGI) | |
| 663 load_unsigned_byte(rbx, Address(rsi, step)); | |
| 664 // advance rsi | |
| 665 increment(rsi, step); | |
| 666 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 667 } | |
| 668 | |
| 669 | |
| 670 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 671 // load current bytecode | |
| 672 load_unsigned_byte(rbx, Address(rsi, 0)); | |
| 673 dispatch_base(state, table); | |
| 674 } | |
| 675 | |
| 676 // remove activation | |
| 677 // | |
| 678 // Unlock the receiver if this is a synchronized method. | |
| 679 // Unlock any Java monitors from syncronized blocks. | |
| 680 // Remove the activation from the stack. | |
| 681 // | |
| 682 // If there are locked Java monitors | |
| 683 // If throw_monitor_exception | |
| 684 // throws IllegalMonitorStateException | |
| 685 // Else if install_monitor_exception | |
| 686 // installs IllegalMonitorStateException | |
| 687 // Else | |
| 688 // no error processing | |
| 689 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
| 690 bool throw_monitor_exception, | |
| 691 bool install_monitor_exception, | |
| 692 bool notify_jvmdi) { | |
| 693 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
| 694 // check if synchronized method | |
| 695 Label unlocked, unlock, no_unlock; | |
| 696 | |
| 697 get_thread(rcx); | |
| 698 const Address do_not_unlock_if_synchronized(rcx, | |
| 699 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 700 | |
| 701 movbool(rbx, do_not_unlock_if_synchronized); | |
| 304 | 702 mov(rdi,rbx); |
| 0 | 703 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
| 704 | |
| 304 | 705 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
| 0 | 706 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
| 707 | |
| 708 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
| 709 jcc(Assembler::zero, unlocked); | |
| 710 | |
| 711 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
| 712 // is set. | |
| 304 | 713 mov(rcx,rdi); |
| 0 | 714 testbool(rcx); |
| 715 jcc(Assembler::notZero, no_unlock); | |
| 716 | |
| 717 // unlock monitor | |
| 718 push(state); // save result | |
| 719 | |
| 720 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 721 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 722 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
| 304 | 723 lea (rdx, monitor); // address of first monitor |
| 0 | 724 |
| 304 | 725 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
| 726 testptr(rax, rax); | |
| 727 jcc (Assembler::notZero, unlock); | |
| 0 | 728 |
| 729 pop(state); | |
| 730 if (throw_monitor_exception) { | |
| 731 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 732 | |
| 733 // Entry already unlocked, need to throw exception | |
| 734 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 735 should_not_reach_here(); | |
| 736 } else { | |
| 737 // Monitor already unlocked during a stack unroll. | |
| 738 // If requested, install an illegal_monitor_state_exception. | |
| 739 // Continue with stack unrolling. | |
| 740 if (install_monitor_exception) { | |
| 741 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 742 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 743 } | |
| 744 jmp(unlocked); | |
| 745 } | |
| 746 | |
| 747 bind(unlock); | |
| 748 unlock_object(rdx); | |
| 749 pop(state); | |
| 750 | |
| 751 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
| 752 bind(unlocked); | |
| 753 | |
| 754 // rax, rdx: Might contain return value | |
| 755 | |
| 756 // Check that all monitors are unlocked | |
| 757 { | |
| 758 Label loop, exception, entry, restart; | |
| 759 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 760 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 761 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 762 | |
| 763 bind(restart); | |
| 304 | 764 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
| 765 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
| 0 | 766 jmp(entry); |
| 767 | |
| 768 // Entry already locked, need to throw exception | |
| 769 bind(exception); | |
| 770 | |
| 771 if (throw_monitor_exception) { | |
| 772 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 773 | |
| 774 // Throw exception | |
| 775 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 776 should_not_reach_here(); | |
| 777 } else { | |
| 778 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
| 779 // Unlock does not block, so don't have to worry about the frame | |
| 780 | |
| 781 push(state); | |
| 304 | 782 mov(rdx, rcx); |
| 0 | 783 unlock_object(rdx); |
| 784 pop(state); | |
| 785 | |
| 786 if (install_monitor_exception) { | |
| 787 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 788 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 789 } | |
| 790 | |
| 791 jmp(restart); | |
| 792 } | |
| 793 | |
| 794 bind(loop); | |
| 304 | 795 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
| 0 | 796 jcc(Assembler::notEqual, exception); |
| 797 | |
| 304 | 798 addptr(rcx, entry_size); // otherwise advance to next entry |
| 0 | 799 bind(entry); |
| 304 | 800 cmpptr(rcx, rbx); // check if bottom reached |
| 0 | 801 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 802 } | |
| 803 | |
| 804 bind(no_unlock); | |
| 805 | |
| 806 // jvmti support | |
| 807 if (notify_jvmdi) { | |
| 808 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
| 809 } else { | |
| 810 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
| 811 } | |
| 812 | |
| 813 // remove activation | |
| 304 | 814 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 815 leave(); // remove frame anchor |
| 304 | 816 pop(ret_addr); // get return address |
| 817 mov(rsp, rbx); // set sp to sender sp | |
| 0 | 818 if (UseSSE) { |
| 819 // float and double are returned in xmm register in SSE-mode | |
| 820 if (state == ftos && UseSSE >= 1) { | |
| 304 | 821 subptr(rsp, wordSize); |
| 0 | 822 fstp_s(Address(rsp, 0)); |
| 823 movflt(xmm0, Address(rsp, 0)); | |
| 304 | 824 addptr(rsp, wordSize); |
| 0 | 825 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 826 subptr(rsp, 2*wordSize); |
| 0 | 827 fstp_d(Address(rsp, 0)); |
| 828 movdbl(xmm0, Address(rsp, 0)); | |
| 304 | 829 addptr(rsp, 2*wordSize); |
| 0 | 830 } |
| 831 } | |
| 832 } | |
| 833 | |
| 834 #endif /* !CC_INTERP */ | |
| 835 | |
| 836 | |
| 837 // Lock object | |
| 838 // | |
| 839 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
| 840 // be initialized with object to lock | |
| 841 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
| 842 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 843 | |
| 844 if (UseHeavyMonitors) { | |
| 845 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 846 } else { | |
| 847 | |
| 848 Label done; | |
| 849 | |
| 850 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 851 const Register obj_reg = rcx; // Will contain the oop | |
| 852 | |
| 853 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
| 854 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
| 855 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
| 856 | |
| 857 Label slow_case; | |
| 858 | |
| 859 // Load object pointer into obj_reg %rcx | |
| 304 | 860 movptr(obj_reg, Address(lock_reg, obj_offset)); |
| 0 | 861 |
| 862 if (UseBiasedLocking) { | |
| 863 // Note: we use noreg for the temporary register since it's hard | |
| 864 // to come up with a free register on all incoming code paths | |
| 865 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
| 866 } | |
| 867 | |
| 868 // Load immediate 1 into swap_reg %rax, | |
| 304 | 869 movptr(swap_reg, (int32_t)1); |
| 0 | 870 |
| 871 // Load (object->mark() | 1) into swap_reg %rax, | |
| 304 | 872 orptr(swap_reg, Address(obj_reg, 0)); |
| 0 | 873 |
| 874 // Save (object->mark() | 1) into BasicLock's displaced header | |
| 304 | 875 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 876 |
| 877 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
| 878 if (os::is_MP()) { | |
| 879 lock(); | |
| 880 } | |
| 304 | 881 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
| 0 | 882 if (PrintBiasedLockingStatistics) { |
| 883 cond_inc32(Assembler::zero, | |
| 884 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 885 } | |
| 886 jcc(Assembler::zero, done); | |
| 887 | |
| 888 // Test if the oopMark is an obvious stack pointer, i.e., | |
| 889 // 1) (mark & 3) == 0, and | |
| 890 // 2) rsp <= mark < mark + os::pagesize() | |
| 891 // | |
| 892 // These 3 tests can be done by evaluating the following | |
| 893 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
| 894 // assuming both stack pointer and pagesize have their | |
| 895 // least significant 2 bits clear. | |
| 896 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
| 304 | 897 subptr(swap_reg, rsp); |
| 898 andptr(swap_reg, 3 - os::vm_page_size()); | |
| 0 | 899 |
| 900 // Save the test result, for recursive case, the result is zero | |
| 304 | 901 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 902 |
| 903 if (PrintBiasedLockingStatistics) { | |
| 904 cond_inc32(Assembler::zero, | |
| 905 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 906 } | |
| 907 jcc(Assembler::zero, done); | |
| 908 | |
| 909 bind(slow_case); | |
| 910 | |
| 911 // Call the runtime routine for slow case | |
| 912 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 913 | |
| 914 bind(done); | |
| 915 } | |
| 916 } | |
| 917 | |
| 918 | |
| 919 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
| 920 // | |
| 921 // Argument: rdx : Points to BasicObjectLock structure for lock | |
| 922 // Throw an IllegalMonitorException if object is not locked by current thread | |
| 923 // | |
| 924 // Uses: rax, rbx, rcx, rdx | |
| 925 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
| 926 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 927 | |
| 928 if (UseHeavyMonitors) { | |
| 929 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
| 930 } else { | |
| 931 Label done; | |
| 932 | |
| 933 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 934 const Register header_reg = rbx; // Will contain the old oopMark | |
| 935 const Register obj_reg = rcx; // Will contain the oop | |
| 936 | |
| 937 save_bcp(); // Save in case of exception | |
| 938 | |
| 939 // Convert from BasicObjectLock structure to object and BasicLock structure | |
| 940 // Store the BasicLock address into %rax, | |
| 304 | 941 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
| 0 | 942 |
| 943 // Load oop into obj_reg(%rcx) | |
| 304 | 944 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
| 0 | 945 |
| 946 // Free entry | |
|
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|
947 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
| 0 | 948 |
| 949 if (UseBiasedLocking) { | |
| 950 biased_locking_exit(obj_reg, header_reg, done); | |
| 951 } | |
| 952 | |
| 953 // Load the old header from BasicLock structure | |
| 304 | 954 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
| 0 | 955 |
| 956 // Test for recursion | |
| 304 | 957 testptr(header_reg, header_reg); |
| 0 | 958 |
| 959 // zero for recursive case | |
| 960 jcc(Assembler::zero, done); | |
| 961 | |
| 962 // Atomic swap back the old header | |
| 963 if (os::is_MP()) lock(); | |
| 304 | 964 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
| 0 | 965 |
| 966 // zero for recursive case | |
| 967 jcc(Assembler::zero, done); | |
| 968 | |
| 969 // Call the runtime routine for slow case. | |
| 304 | 970 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
| 0 | 971 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
| 972 | |
| 973 bind(done); | |
| 974 | |
| 975 restore_bcp(); | |
| 976 } | |
| 977 } | |
| 978 | |
| 979 | |
| 980 #ifndef CC_INTERP | |
| 981 | |
| 982 // Test ImethodDataPtr. If it is null, continue at the specified label | |
| 983 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
| 984 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 985 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
| 986 testptr(mdp, mdp); | |
| 0 | 987 jcc(Assembler::zero, zero_continue); |
| 988 } | |
| 989 | |
| 990 | |
| 991 // Set the method data pointer for the current bcp. | |
| 992 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 993 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 994 Label zero_continue; | |
| 304 | 995 push(rax); |
| 996 push(rbx); | |
| 0 | 997 |
| 998 get_method(rbx); | |
| 999 // Test MDO to avoid the call if it is NULL. | |
| 304 | 1000 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 1001 testptr(rax, rax); | |
| 0 | 1002 jcc(Assembler::zero, zero_continue); |
| 1003 | |
| 1004 // rbx,: method | |
| 1005 // rsi: bcp | |
| 1006 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
| 1007 // rax,: mdi | |
| 1008 | |
| 304 | 1009 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 1010 testptr(rbx, rbx); | |
| 0 | 1011 jcc(Assembler::zero, zero_continue); |
| 304 | 1012 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); |
| 1013 addptr(rbx, rax); | |
| 1014 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx); | |
| 0 | 1015 |
| 1016 bind(zero_continue); | |
| 304 | 1017 pop(rbx); |
| 1018 pop(rax); | |
| 0 | 1019 } |
| 1020 | |
| 1021 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 1022 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1023 #ifdef ASSERT | |
| 1024 Label verify_continue; | |
| 304 | 1025 push(rax); |
| 1026 push(rbx); | |
| 1027 push(rcx); | |
| 1028 push(rdx); | |
| 0 | 1029 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
| 1030 get_method(rbx); | |
| 1031 | |
| 1032 // If the mdp is valid, it will point to a DataLayout header which is | |
| 1033 // consistent with the bcp. The converse is highly probable also. | |
| 1034 load_unsigned_word(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); | |
| 304 | 1035 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
| 1036 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
| 1037 cmpptr(rdx, rsi); | |
| 0 | 1038 jcc(Assembler::equal, verify_continue); |
| 1039 // rbx,: method | |
| 1040 // rsi: bcp | |
| 1041 // rcx: mdp | |
| 1042 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
| 1043 bind(verify_continue); | |
| 304 | 1044 pop(rdx); |
| 1045 pop(rcx); | |
| 1046 pop(rbx); | |
| 1047 pop(rax); | |
| 0 | 1048 #endif // ASSERT |
| 1049 } | |
| 1050 | |
| 1051 | |
| 1052 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
| 304 | 1053 // %%% this seems to be used to store counter data which is surely 32bits |
| 1054 // however 64bit side stores 64 bits which seems wrong | |
| 0 | 1055 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1056 Address data(mdp_in, constant); | |
| 304 | 1057 movptr(data, value); |
| 0 | 1058 } |
| 1059 | |
| 1060 | |
| 1061 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 1062 int constant, | |
| 1063 bool decrement) { | |
| 1064 // Counter address | |
| 1065 Address data(mdp_in, constant); | |
| 1066 | |
| 1067 increment_mdp_data_at(data, decrement); | |
| 1068 } | |
| 1069 | |
| 1070 | |
| 1071 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
| 1072 bool decrement) { | |
| 1073 | |
| 1074 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 1075 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1076 | |
| 304 | 1077 // %%% 64bit treats this as 64 bit which seems unlikely |
| 0 | 1078 if (decrement) { |
| 1079 // Decrement the register. Set condition codes. | |
| 1080 addl(data, -DataLayout::counter_increment); | |
| 1081 // If the decrement causes the counter to overflow, stay negative | |
| 1082 Label L; | |
| 1083 jcc(Assembler::negative, L); | |
| 1084 addl(data, DataLayout::counter_increment); | |
| 1085 bind(L); | |
| 1086 } else { | |
| 1087 assert(DataLayout::counter_increment == 1, | |
| 1088 "flow-free idiom only works with 1"); | |
| 1089 // Increment the register. Set carry flag. | |
| 1090 addl(data, DataLayout::counter_increment); | |
| 1091 // If the increment causes the counter to overflow, pull back by 1. | |
| 1092 sbbl(data, 0); | |
| 1093 } | |
| 1094 } | |
| 1095 | |
| 1096 | |
| 1097 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 1098 Register reg, | |
| 1099 int constant, | |
| 1100 bool decrement) { | |
| 1101 Address data(mdp_in, reg, Address::times_1, constant); | |
| 1102 | |
| 1103 increment_mdp_data_at(data, decrement); | |
| 1104 } | |
| 1105 | |
| 1106 | |
| 1107 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
| 1108 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1109 int header_offset = in_bytes(DataLayout::header_offset()); | |
| 1110 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
| 1111 // Set the flag | |
| 1112 orl(Address(mdp_in, header_offset), header_bits); | |
| 1113 } | |
| 1114 | |
| 1115 | |
| 1116 | |
| 1117 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
| 1118 int offset, | |
| 1119 Register value, | |
| 1120 Register test_value_out, | |
| 1121 Label& not_equal_continue) { | |
| 1122 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1123 if (test_value_out == noreg) { | |
| 304 | 1124 cmpptr(value, Address(mdp_in, offset)); |
| 0 | 1125 } else { |
| 1126 // Put the test value into a register, so caller can use it: | |
| 304 | 1127 movptr(test_value_out, Address(mdp_in, offset)); |
| 1128 cmpptr(test_value_out, value); | |
| 0 | 1129 } |
| 1130 jcc(Assembler::notEqual, not_equal_continue); | |
| 1131 } | |
| 1132 | |
| 1133 | |
| 1134 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
| 1135 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1136 Address disp_address(mdp_in, offset_of_disp); | |
| 304 | 1137 addptr(mdp_in,disp_address); |
| 1138 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1139 } |
| 1140 | |
| 1141 | |
| 1142 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
| 1143 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1144 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
| 304 | 1145 addptr(mdp_in, disp_address); |
| 1146 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1147 } |
| 1148 | |
| 1149 | |
| 1150 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
| 1151 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1152 addptr(mdp_in, constant); |
| 1153 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1154 } |
| 1155 | |
| 1156 | |
| 1157 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
| 1158 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1159 push(return_bci); // save/restore across call_VM |
| 0 | 1160 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
| 304 | 1161 pop(return_bci); |
| 0 | 1162 } |
| 1163 | |
| 1164 | |
| 1165 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
| 1166 if (ProfileInterpreter) { | |
| 1167 Label profile_continue; | |
| 1168 | |
| 1169 // If no method data exists, go to profile_continue. | |
| 1170 // Otherwise, assign to mdp | |
| 1171 test_method_data_pointer(mdp, profile_continue); | |
| 1172 | |
| 1173 // We are taking a branch. Increment the taken count. | |
| 1174 // We inline increment_mdp_data_at to return bumped_count in a register | |
| 1175 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
| 1176 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
| 304 | 1177 |
| 1178 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
| 0 | 1179 movl(bumped_count,data); |
| 1180 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 1181 addl(bumped_count, DataLayout::counter_increment); | |
| 1182 sbbl(bumped_count, 0); | |
| 1183 movl(data,bumped_count); // Store back out | |
| 1184 | |
| 1185 // The method data pointer needs to be updated to reflect the new target. | |
| 1186 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
| 1187 bind (profile_continue); | |
| 1188 } | |
| 1189 } | |
| 1190 | |
| 1191 | |
| 1192 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
| 1193 if (ProfileInterpreter) { | |
| 1194 Label profile_continue; | |
| 1195 | |
| 1196 // If no method data exists, go to profile_continue. | |
| 1197 test_method_data_pointer(mdp, profile_continue); | |
| 1198 | |
| 1199 // We are taking a branch. Increment the not taken count. | |
| 1200 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
| 1201 | |
| 1202 // The method data pointer needs to be updated to correspond to the next bytecode | |
| 1203 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
| 1204 bind (profile_continue); | |
| 1205 } | |
| 1206 } | |
| 1207 | |
| 1208 | |
| 1209 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
| 1210 if (ProfileInterpreter) { | |
| 1211 Label profile_continue; | |
| 1212 | |
| 1213 // If no method data exists, go to profile_continue. | |
| 1214 test_method_data_pointer(mdp, profile_continue); | |
| 1215 | |
| 1216 // We are making a call. Increment the count. | |
| 1217 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1218 | |
| 1219 // The method data pointer needs to be updated to reflect the new target. | |
| 1220 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
| 1221 bind (profile_continue); | |
| 1222 } | |
| 1223 } | |
| 1224 | |
| 1225 | |
| 1226 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
| 1227 if (ProfileInterpreter) { | |
| 1228 Label profile_continue; | |
| 1229 | |
| 1230 // If no method data exists, go to profile_continue. | |
| 1231 test_method_data_pointer(mdp, profile_continue); | |
| 1232 | |
| 1233 // We are making a call. Increment the count. | |
| 1234 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1235 | |
| 1236 // The method data pointer needs to be updated to reflect the new target. | |
| 1237 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1238 bind (profile_continue); | |
| 1239 } | |
| 1240 } | |
| 1241 | |
| 1242 | |
| 1243 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, Register reg2) { | |
| 1244 if (ProfileInterpreter) { | |
| 1245 Label profile_continue; | |
| 1246 | |
| 1247 // If no method data exists, go to profile_continue. | |
| 1248 test_method_data_pointer(mdp, profile_continue); | |
| 1249 | |
| 1250 // We are making a call. Increment the count. | |
| 1251 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1252 | |
| 1253 // Record the receiver type. | |
| 1254 record_klass_in_profile(receiver, mdp, reg2); | |
| 1255 | |
| 1256 // The method data pointer needs to be updated to reflect the new target. | |
| 1257 update_mdp_by_constant(mdp, | |
| 1258 in_bytes(VirtualCallData:: | |
| 1259 virtual_call_data_size())); | |
| 1260 bind(profile_continue); | |
| 1261 } | |
| 1262 } | |
| 1263 | |
| 1264 | |
| 1265 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1266 Register receiver, Register mdp, | |
| 1267 Register reg2, | |
| 1268 int start_row, Label& done) { | |
| 1269 int last_row = VirtualCallData::row_limit() - 1; | |
| 1270 assert(start_row <= last_row, "must be work left to do"); | |
| 1271 // Test this row for both the receiver and for null. | |
| 1272 // Take any of three different outcomes: | |
| 1273 // 1. found receiver => increment count and goto done | |
| 1274 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1275 // 3. found something else => keep looking for cases 1 and 2 | |
| 1276 // Case 3 is handled by a recursive call. | |
| 1277 for (int row = start_row; row <= last_row; row++) { | |
| 1278 Label next_test; | |
| 1279 bool test_for_null_also = (row == start_row); | |
| 1280 | |
| 1281 // See if the receiver is receiver[n]. | |
| 1282 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1283 test_mdp_data_at(mdp, recvr_offset, receiver, | |
| 1284 (test_for_null_also ? reg2 : noreg), | |
| 1285 next_test); | |
| 1286 // (Reg2 now contains the receiver from the CallData.) | |
| 1287 | |
| 1288 // The receiver is receiver[n]. Increment count[n]. | |
| 1289 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1290 increment_mdp_data_at(mdp, count_offset); | |
| 1291 jmp(done); | |
| 1292 bind(next_test); | |
| 1293 | |
| 1294 if (row == start_row) { | |
| 1295 // Failed the equality check on receiver[n]... Test for null. | |
| 304 | 1296 testptr(reg2, reg2); |
| 0 | 1297 if (start_row == last_row) { |
| 1298 // The only thing left to do is handle the null case. | |
| 1299 jcc(Assembler::notZero, done); | |
| 1300 break; | |
| 1301 } | |
| 1302 // Since null is rare, make it be the branch-taken case. | |
| 1303 Label found_null; | |
| 1304 jcc(Assembler::zero, found_null); | |
| 1305 | |
| 1306 // Put all the "Case 3" tests here. | |
| 1307 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done); | |
| 1308 | |
| 1309 // Found a null. Keep searching for a matching receiver, | |
| 1310 // but remember that this is an empty (unused) slot. | |
| 1311 bind(found_null); | |
| 1312 } | |
| 1313 } | |
| 1314 | |
| 1315 // In the fall-through case, we found no matching receiver, but we | |
| 1316 // observed the receiver[start_row] is NULL. | |
| 1317 | |
| 1318 // Fill in the receiver field and increment the count. | |
| 1319 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1320 set_mdp_data_at(mdp, recvr_offset, receiver); | |
| 1321 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 304 | 1322 movptr(reg2, (int32_t)DataLayout::counter_increment); |
| 0 | 1323 set_mdp_data_at(mdp, count_offset, reg2); |
| 1324 jmp(done); | |
| 1325 } | |
| 1326 | |
| 1327 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
| 1328 Register mdp, | |
| 1329 Register reg2) { | |
| 1330 assert(ProfileInterpreter, "must be profiling"); | |
| 1331 Label done; | |
| 1332 | |
| 1333 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done); | |
| 1334 | |
| 1335 bind (done); | |
| 1336 } | |
| 1337 | |
| 1338 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
| 1339 if (ProfileInterpreter) { | |
| 1340 Label profile_continue; | |
| 1341 uint row; | |
| 1342 | |
| 1343 // If no method data exists, go to profile_continue. | |
| 1344 test_method_data_pointer(mdp, profile_continue); | |
| 1345 | |
| 1346 // Update the total ret count. | |
| 1347 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1348 | |
| 1349 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1350 Label next_test; | |
| 1351 | |
| 1352 // See if return_bci is equal to bci[n]: | |
| 1353 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
| 1354 noreg, next_test); | |
| 1355 | |
| 1356 // return_bci is equal to bci[n]. Increment the count. | |
| 1357 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
| 1358 | |
| 1359 // The method data pointer needs to be updated to reflect the new target. | |
| 1360 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
| 1361 jmp(profile_continue); | |
| 1362 bind(next_test); | |
| 1363 } | |
| 1364 | |
| 1365 update_mdp_for_ret(return_bci); | |
| 1366 | |
| 1367 bind (profile_continue); | |
| 1368 } | |
| 1369 } | |
| 1370 | |
| 1371 | |
| 1372 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
| 1373 if (ProfileInterpreter) { | |
| 1374 Label profile_continue; | |
| 1375 | |
| 1376 // If no method data exists, go to profile_continue. | |
| 1377 test_method_data_pointer(mdp, profile_continue); | |
| 1378 | |
| 1379 // The method data pointer needs to be updated. | |
| 1380 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1381 if (TypeProfileCasts) { | |
| 1382 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1383 } | |
| 1384 update_mdp_by_constant(mdp, mdp_delta); | |
| 1385 | |
| 1386 bind (profile_continue); | |
| 1387 } | |
| 1388 } | |
| 1389 | |
| 1390 | |
| 1391 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
| 1392 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1393 Label profile_continue; | |
| 1394 | |
| 1395 // If no method data exists, go to profile_continue. | |
| 1396 test_method_data_pointer(mdp, profile_continue); | |
| 1397 | |
| 1398 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1399 // Back up the address, since we have already bumped the mdp. | |
| 1400 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1401 | |
| 1402 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1403 increment_mdp_data_at(mdp, count_offset, true); | |
| 1404 | |
| 1405 bind (profile_continue); | |
| 1406 } | |
| 1407 } | |
| 1408 | |
| 1409 | |
| 1410 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
| 1411 { | |
| 1412 if (ProfileInterpreter) { | |
| 1413 Label profile_continue; | |
| 1414 | |
| 1415 // If no method data exists, go to profile_continue. | |
| 1416 test_method_data_pointer(mdp, profile_continue); | |
| 1417 | |
| 1418 // The method data pointer needs to be updated. | |
| 1419 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1420 if (TypeProfileCasts) { | |
| 1421 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1422 | |
| 1423 // Record the object type. | |
| 1424 record_klass_in_profile(klass, mdp, reg2); | |
| 1425 assert(reg2 == rdi, "we know how to fix this blown reg"); | |
| 1426 restore_locals(); // Restore EDI | |
| 1427 } | |
| 1428 update_mdp_by_constant(mdp, mdp_delta); | |
| 1429 | |
| 1430 bind(profile_continue); | |
| 1431 } | |
| 1432 } | |
| 1433 | |
| 1434 | |
| 1435 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
| 1436 if (ProfileInterpreter) { | |
| 1437 Label profile_continue; | |
| 1438 | |
| 1439 // If no method data exists, go to profile_continue. | |
| 1440 test_method_data_pointer(mdp, profile_continue); | |
| 1441 | |
| 1442 // Update the default case count | |
| 1443 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
| 1444 | |
| 1445 // The method data pointer needs to be updated. | |
| 1446 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
| 1447 | |
| 1448 bind (profile_continue); | |
| 1449 } | |
| 1450 } | |
| 1451 | |
| 1452 | |
| 1453 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
| 1454 if (ProfileInterpreter) { | |
| 1455 Label profile_continue; | |
| 1456 | |
| 1457 // If no method data exists, go to profile_continue. | |
| 1458 test_method_data_pointer(mdp, profile_continue); | |
| 1459 | |
| 1460 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
| 304 | 1461 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size())); |
| 1462 // index is positive and so should have correct value if this code were | |
| 1463 // used on 64bits | |
| 1464 imulptr(index, reg2); | |
| 1465 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
| 0 | 1466 |
| 1467 // Update the case count | |
| 1468 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
| 1469 | |
| 1470 // The method data pointer needs to be updated. | |
| 1471 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
| 1472 | |
| 1473 bind (profile_continue); | |
| 1474 } | |
| 1475 } | |
| 1476 | |
| 1477 #endif // !CC_INTERP | |
| 1478 | |
| 1479 | |
| 1480 | |
| 1481 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
| 1482 if (state == atos) MacroAssembler::verify_oop(reg); | |
| 1483 } | |
| 1484 | |
| 1485 | |
| 1486 #ifndef CC_INTERP | |
| 1487 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 1488 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
| 1489 } | |
| 1490 | |
| 1491 #endif /* CC_INTERP */ | |
| 1492 | |
| 1493 | |
| 1494 void InterpreterMacroAssembler::notify_method_entry() { | |
| 1495 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1496 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1497 // the code to check if the event should be sent. | |
| 1498 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1499 Label L; | |
| 1500 get_thread(rcx); | |
| 1501 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1502 testl(rcx,rcx); | |
| 1503 jcc(Assembler::zero, L); | |
| 1504 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
| 1505 bind(L); | |
| 1506 } | |
| 1507 | |
| 1508 { | |
| 1509 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 1510 get_thread(rcx); | |
| 1511 get_method(rbx); | |
| 1512 call_VM_leaf( | |
| 1513 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
| 1514 } | |
|
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1515 |
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1516 // RedefineClasses() tracing support for obsolete method entry |
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1517 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1518 get_thread(rcx); |
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1519 get_method(rbx); |
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1520 call_VM_leaf( |
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1521 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1522 rcx, rbx); |
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1523 } |
| 0 | 1524 } |
| 1525 | |
| 1526 | |
| 1527 void InterpreterMacroAssembler::notify_method_exit( | |
| 1528 TosState state, NotifyMethodExitMode mode) { | |
| 1529 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1530 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1531 // the code to check if the event should be sent. | |
| 1532 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
| 1533 Label L; | |
| 1534 // Note: frame::interpreter_frame_result has a dependency on how the | |
| 1535 // method result is saved across the call to post_method_exit. If this | |
| 1536 // is changed then the interpreter_frame_result implementation will | |
| 1537 // need to be updated too. | |
| 1538 | |
| 1539 // For c++ interpreter the result is always stored at a known location in the frame | |
| 1540 // template interpreter will leave it on the top of the stack. | |
| 1541 NOT_CC_INTERP(push(state);) | |
| 1542 get_thread(rcx); | |
| 1543 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1544 testl(rcx,rcx); | |
| 1545 jcc(Assembler::zero, L); | |
| 1546 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
| 1547 bind(L); | |
| 1548 NOT_CC_INTERP(pop(state);) | |
| 1549 } | |
| 1550 | |
| 1551 { | |
| 1552 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 304 | 1553 NOT_CC_INTERP(push(state)); |
| 0 | 1554 get_thread(rbx); |
| 1555 get_method(rcx); | |
| 1556 call_VM_leaf( | |
| 1557 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
| 1558 rbx, rcx); | |
| 304 | 1559 NOT_CC_INTERP(pop(state)); |
| 0 | 1560 } |
| 1561 } |