Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 647:bd441136a5ce
Merge
| author | kvn |
|---|---|
| date | Thu, 19 Mar 2009 09:13:24 -0700 |
| parents | 7bb995fbd3c0 c517646eef23 |
| children | e5b0439ef4ae |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 579 | 2 * Copyright 1997-2009 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"); | |
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195 load_unsigned_short(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"); | |
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205 load_unsigned_short(tmp, Address(rsi, bcp_offset)); |
| 0 | 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" ); | |
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222 assert( Rsub_klass != rcx, "used as a temp" ); |
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223 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
| 0 | 224 |
| 225 // Profile the not-null value's klass. | |
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226 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
| 0 | 227 |
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228 // Do the check. |
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229 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
| 0 | 230 |
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231 // Profile the failure of the check. |
| 0 | 232 profile_typecheck_failed(rcx); // blows rcx |
| 233 } | |
| 234 | |
| 235 void InterpreterMacroAssembler::f2ieee() { | |
| 236 if (IEEEPrecision) { | |
| 237 fstp_s(Address(rsp, 0)); | |
| 238 fld_s(Address(rsp, 0)); | |
| 239 } | |
| 240 } | |
| 241 | |
| 242 | |
| 243 void InterpreterMacroAssembler::d2ieee() { | |
| 244 if (IEEEPrecision) { | |
| 245 fstp_d(Address(rsp, 0)); | |
| 246 fld_d(Address(rsp, 0)); | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 // Java Expression Stack | |
| 251 | |
| 252 #ifdef ASSERT | |
| 253 void InterpreterMacroAssembler::verify_stack_tag(frame::Tag t) { | |
| 254 if (TaggedStackInterpreter) { | |
| 255 Label okay; | |
| 304 | 256 cmpptr(Address(rsp, wordSize), (int32_t)t); |
| 0 | 257 jcc(Assembler::equal, okay); |
| 258 // Also compare if the stack value is zero, then the tag might | |
| 259 // not have been set coming from deopt. | |
| 304 | 260 cmpptr(Address(rsp, 0), 0); |
| 0 | 261 jcc(Assembler::equal, okay); |
| 262 stop("Java Expression stack tag value is bad"); | |
| 263 bind(okay); | |
| 264 } | |
| 265 } | |
| 266 #endif // ASSERT | |
| 267 | |
| 268 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 269 debug_only(verify_stack_tag(frame::TagReference)); | |
| 304 | 270 pop(r); |
| 271 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 272 } |
| 273 | |
| 274 void InterpreterMacroAssembler::pop_ptr(Register r, Register tag) { | |
| 304 | 275 pop(r); |
| 0 | 276 // Tag may not be reference for jsr, can be returnAddress |
| 304 | 277 if (TaggedStackInterpreter) pop(tag); |
| 0 | 278 } |
| 279 | |
| 280 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 281 debug_only(verify_stack_tag(frame::TagValue)); | |
| 304 | 282 pop(r); |
| 283 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 284 } |
| 285 | |
| 286 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
| 287 debug_only(verify_stack_tag(frame::TagValue)); | |
| 304 | 288 pop(lo); |
| 289 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 290 debug_only(verify_stack_tag(frame::TagValue)); |
| 304 | 291 pop(hi); |
| 292 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 293 } |
| 294 | |
| 295 void InterpreterMacroAssembler::pop_f() { | |
| 296 debug_only(verify_stack_tag(frame::TagValue)); | |
| 297 fld_s(Address(rsp, 0)); | |
| 304 | 298 addptr(rsp, 1 * wordSize); |
| 299 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 300 } |
| 301 | |
| 302 void InterpreterMacroAssembler::pop_d() { | |
| 303 // Write double to stack contiguously and load into ST0 | |
| 304 pop_dtos_to_rsp(); | |
| 305 fld_d(Address(rsp, 0)); | |
| 304 | 306 addptr(rsp, 2 * wordSize); |
| 0 | 307 } |
| 308 | |
| 309 | |
| 310 // Pop the top of the java expression stack to execution stack (which | |
| 311 // happens to be the same place). | |
| 312 void InterpreterMacroAssembler::pop_dtos_to_rsp() { | |
| 313 if (TaggedStackInterpreter) { | |
| 314 // Pop double value into scratch registers | |
| 315 debug_only(verify_stack_tag(frame::TagValue)); | |
| 304 | 316 pop(rax); |
| 317 addptr(rsp, 1* wordSize); | |
| 0 | 318 debug_only(verify_stack_tag(frame::TagValue)); |
| 304 | 319 pop(rdx); |
| 320 addptr(rsp, 1* wordSize); | |
| 321 push(rdx); | |
| 322 push(rax); | |
| 0 | 323 } |
| 324 } | |
| 325 | |
| 326 void InterpreterMacroAssembler::pop_ftos_to_rsp() { | |
| 327 if (TaggedStackInterpreter) { | |
| 328 debug_only(verify_stack_tag(frame::TagValue)); | |
| 304 | 329 pop(rax); |
| 330 addptr(rsp, 1 * wordSize); | |
| 331 push(rax); // ftos is at rsp | |
| 0 | 332 } |
| 333 } | |
| 334 | |
| 335 void InterpreterMacroAssembler::pop(TosState state) { | |
| 336 switch (state) { | |
| 337 case atos: pop_ptr(rax); break; | |
| 338 case btos: // fall through | |
| 339 case ctos: // fall through | |
| 340 case stos: // fall through | |
| 341 case itos: pop_i(rax); break; | |
| 342 case ltos: pop_l(rax, rdx); break; | |
| 343 case ftos: pop_f(); break; | |
| 344 case dtos: pop_d(); break; | |
| 345 case vtos: /* nothing to do */ break; | |
| 346 default : ShouldNotReachHere(); | |
| 347 } | |
| 348 verify_oop(rax, state); | |
| 349 } | |
| 350 | |
| 351 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 304 | 352 if (TaggedStackInterpreter) push(frame::TagReference); |
| 353 push(r); | |
| 0 | 354 } |
| 355 | |
| 356 void InterpreterMacroAssembler::push_ptr(Register r, Register tag) { | |
| 304 | 357 if (TaggedStackInterpreter) push(tag); // tag first |
| 358 push(r); | |
| 0 | 359 } |
| 360 | |
| 361 void InterpreterMacroAssembler::push_i(Register r) { | |
| 304 | 362 if (TaggedStackInterpreter) push(frame::TagValue); |
| 363 push(r); | |
| 0 | 364 } |
| 365 | |
| 366 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
| 304 | 367 if (TaggedStackInterpreter) push(frame::TagValue); |
| 368 push(hi); | |
| 369 if (TaggedStackInterpreter) push(frame::TagValue); | |
| 370 push(lo); | |
| 0 | 371 } |
| 372 | |
| 373 void InterpreterMacroAssembler::push_f() { | |
| 304 | 374 if (TaggedStackInterpreter) push(frame::TagValue); |
| 0 | 375 // Do not schedule for no AGI! Never write beyond rsp! |
| 304 | 376 subptr(rsp, 1 * wordSize); |
| 0 | 377 fstp_s(Address(rsp, 0)); |
| 378 } | |
| 379 | |
| 380 void InterpreterMacroAssembler::push_d(Register r) { | |
| 381 if (TaggedStackInterpreter) { | |
| 382 // Double values are stored as: | |
| 383 // tag | |
| 384 // high | |
| 385 // tag | |
| 386 // low | |
| 304 | 387 push(frame::TagValue); |
| 388 subptr(rsp, 3 * wordSize); | |
| 0 | 389 fstp_d(Address(rsp, 0)); |
| 390 // move high word up to slot n-1 | |
| 391 movl(r, Address(rsp, 1*wordSize)); | |
| 392 movl(Address(rsp, 2*wordSize), r); | |
| 393 // move tag | |
| 394 movl(Address(rsp, 1*wordSize), frame::TagValue); | |
| 395 } else { | |
| 396 // Do not schedule for no AGI! Never write beyond rsp! | |
| 304 | 397 subptr(rsp, 2 * wordSize); |
| 0 | 398 fstp_d(Address(rsp, 0)); |
| 399 } | |
| 400 } | |
| 401 | |
| 402 | |
| 403 void InterpreterMacroAssembler::push(TosState state) { | |
| 404 verify_oop(rax, state); | |
| 405 switch (state) { | |
| 406 case atos: push_ptr(rax); break; | |
| 407 case btos: // fall through | |
| 408 case ctos: // fall through | |
| 409 case stos: // fall through | |
| 410 case itos: push_i(rax); break; | |
| 411 case ltos: push_l(rax, rdx); break; | |
| 412 case ftos: push_f(); break; | |
| 413 case dtos: push_d(rax); break; | |
| 414 case vtos: /* nothing to do */ break; | |
| 415 default : ShouldNotReachHere(); | |
| 416 } | |
| 417 } | |
| 418 | |
| 419 | |
| 420 // Tagged stack helpers for swap and dup | |
| 421 void InterpreterMacroAssembler::load_ptr_and_tag(int n, Register val, | |
| 422 Register tag) { | |
| 304 | 423 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
| 0 | 424 if (TaggedStackInterpreter) { |
| 304 | 425 movptr(tag, Address(rsp, Interpreter::expr_tag_offset_in_bytes(n))); |
| 0 | 426 } |
| 427 } | |
| 428 | |
| 429 void InterpreterMacroAssembler::store_ptr_and_tag(int n, Register val, | |
| 430 Register tag) { | |
| 304 | 431 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); |
| 0 | 432 if (TaggedStackInterpreter) { |
| 304 | 433 movptr(Address(rsp, Interpreter::expr_tag_offset_in_bytes(n)), tag); |
| 0 | 434 } |
| 435 } | |
| 436 | |
| 437 | |
| 438 // Tagged local support | |
| 439 void InterpreterMacroAssembler::tag_local(frame::Tag tag, int n) { | |
| 440 if (TaggedStackInterpreter) { | |
| 441 if (tag == frame::TagCategory2) { | |
| 304 | 442 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)frame::TagValue); |
| 443 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)frame::TagValue); | |
| 0 | 444 } else { |
| 304 | 445 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)tag); |
| 0 | 446 } |
| 447 } | |
| 448 } | |
| 449 | |
| 450 void InterpreterMacroAssembler::tag_local(frame::Tag tag, Register idx) { | |
| 451 if (TaggedStackInterpreter) { | |
| 452 if (tag == frame::TagCategory2) { | |
| 304 | 453 movptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 454 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)frame::TagValue); | |
| 455 movptr(Address(rdi, idx, Interpreter::stackElementScale(), | |
| 456 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)frame::TagValue); | |
| 0 | 457 } else { |
| 304 | 458 movptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 459 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)tag); | |
| 0 | 460 } |
| 461 } | |
| 462 } | |
| 463 | |
| 464 void InterpreterMacroAssembler::tag_local(Register tag, Register idx) { | |
| 465 if (TaggedStackInterpreter) { | |
| 466 // can only be TagValue or TagReference | |
| 304 | 467 movptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 0 | 468 Interpreter::local_tag_offset_in_bytes(0)), tag); |
| 469 } | |
| 470 } | |
| 471 | |
| 472 | |
| 473 void InterpreterMacroAssembler::tag_local(Register tag, int n) { | |
| 474 if (TaggedStackInterpreter) { | |
| 475 // can only be TagValue or TagReference | |
| 304 | 476 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), tag); |
| 0 | 477 } |
| 478 } | |
| 479 | |
| 480 #ifdef ASSERT | |
| 481 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, int n) { | |
| 482 if (TaggedStackInterpreter) { | |
| 483 frame::Tag t = tag; | |
| 484 if (tag == frame::TagCategory2) { | |
| 485 Label nbl; | |
| 486 t = frame::TagValue; // change to what is stored in locals | |
| 304 | 487 cmpptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)t); |
| 0 | 488 jcc(Assembler::equal, nbl); |
| 489 stop("Local tag is bad for long/double"); | |
| 490 bind(nbl); | |
| 491 } | |
| 492 Label notBad; | |
| 304 | 493 cmpptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)t); |
| 0 | 494 jcc(Assembler::equal, notBad); |
| 495 // Also compare if the local value is zero, then the tag might | |
| 496 // not have been set coming from deopt. | |
| 304 | 497 cmpptr(Address(rdi, Interpreter::local_offset_in_bytes(n)), 0); |
| 0 | 498 jcc(Assembler::equal, notBad); |
| 499 stop("Local tag is bad"); | |
| 500 bind(notBad); | |
| 501 } | |
| 502 } | |
| 503 | |
| 504 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, Register idx) { | |
| 505 if (TaggedStackInterpreter) { | |
| 506 frame::Tag t = tag; | |
| 507 if (tag == frame::TagCategory2) { | |
| 508 Label nbl; | |
| 509 t = frame::TagValue; // change to what is stored in locals | |
| 304 | 510 cmpptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 511 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)t); | |
| 0 | 512 jcc(Assembler::equal, nbl); |
| 513 stop("Local tag is bad for long/double"); | |
| 514 bind(nbl); | |
| 515 } | |
| 516 Label notBad; | |
| 517 cmpl(Address(rdi, idx, Interpreter::stackElementScale(), | |
| 304 | 518 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)t); |
| 0 | 519 jcc(Assembler::equal, notBad); |
| 520 // Also compare if the local value is zero, then the tag might | |
| 521 // not have been set coming from deopt. | |
| 304 | 522 cmpptr(Address(rdi, idx, Interpreter::stackElementScale(), |
| 0 | 523 Interpreter::local_offset_in_bytes(0)), 0); |
| 524 jcc(Assembler::equal, notBad); | |
| 525 stop("Local tag is bad"); | |
| 526 bind(notBad); | |
| 527 | |
| 528 } | |
| 529 } | |
| 530 #endif // ASSERT | |
| 531 | |
| 532 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) { | |
| 533 MacroAssembler::call_VM_leaf_base(entry_point, 0); | |
| 534 } | |
| 535 | |
| 536 | |
| 537 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) { | |
| 304 | 538 push(arg_1); |
| 0 | 539 MacroAssembler::call_VM_leaf_base(entry_point, 1); |
| 540 } | |
| 541 | |
| 542 | |
| 543 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) { | |
| 304 | 544 push(arg_2); |
| 545 push(arg_1); | |
| 0 | 546 MacroAssembler::call_VM_leaf_base(entry_point, 2); |
| 547 } | |
| 548 | |
| 549 | |
| 550 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) { | |
| 304 | 551 push(arg_3); |
| 552 push(arg_2); | |
| 553 push(arg_1); | |
| 0 | 554 MacroAssembler::call_VM_leaf_base(entry_point, 3); |
| 555 } | |
| 556 | |
| 557 | |
| 558 // Jump to from_interpreted entry of a call unless single stepping is possible | |
| 559 // in this thread in which case we must call the i2i entry | |
| 560 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
| 561 // set sender sp | |
| 304 | 562 lea(rsi, Address(rsp, wordSize)); |
| 0 | 563 // record last_sp |
| 304 | 564 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
| 0 | 565 |
| 566 if (JvmtiExport::can_post_interpreter_events()) { | |
| 567 Label run_compiled_code; | |
| 568 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 569 // compiled code in threads for which the event is enabled. Check here for | |
| 570 // interp_only_mode if these events CAN be enabled. | |
| 571 get_thread(temp); | |
| 572 // interp_only is an int, on little endian it is sufficient to test the byte only | |
| 573 // Is a cmpl faster (ce | |
| 574 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); | |
| 575 jcc(Assembler::zero, run_compiled_code); | |
| 576 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); | |
| 577 bind(run_compiled_code); | |
| 578 } | |
| 579 | |
| 580 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
| 581 | |
| 582 } | |
| 583 | |
| 584 | |
| 585 // The following two routines provide a hook so that an implementation | |
| 586 // can schedule the dispatch in two parts. Intel does not do this. | |
| 587 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
| 588 // Nothing Intel-specific to be done here. | |
| 589 } | |
| 590 | |
| 591 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
| 592 dispatch_next(state, step); | |
| 593 } | |
| 594 | |
| 595 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
| 596 bool verifyoop) { | |
| 597 verify_FPU(1, state); | |
| 598 if (VerifyActivationFrameSize) { | |
| 599 Label L; | |
| 304 | 600 mov(rcx, rbp); |
| 601 subptr(rcx, rsp); | |
| 0 | 602 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
| 304 | 603 cmpptr(rcx, min_frame_size); |
| 0 | 604 jcc(Assembler::greaterEqual, L); |
| 605 stop("broken stack frame"); | |
| 606 bind(L); | |
| 607 } | |
| 608 if (verifyoop) verify_oop(rax, state); | |
| 304 | 609 Address index(noreg, rbx, Address::times_ptr); |
| 0 | 610 ExternalAddress tbl((address)table); |
| 611 ArrayAddress dispatch(tbl, index); | |
| 612 jump(dispatch); | |
| 613 } | |
| 614 | |
| 615 | |
| 616 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
| 617 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 618 } | |
| 619 | |
| 620 | |
| 621 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
| 622 dispatch_base(state, Interpreter::normal_table(state)); | |
| 623 } | |
| 624 | |
| 625 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
| 626 dispatch_base(state, Interpreter::normal_table(state), false); | |
| 627 } | |
| 628 | |
| 629 | |
| 630 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
| 631 // load next bytecode (load before advancing rsi to prevent AGI) | |
| 632 load_unsigned_byte(rbx, Address(rsi, step)); | |
| 633 // advance rsi | |
| 634 increment(rsi, step); | |
| 635 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 636 } | |
| 637 | |
| 638 | |
| 639 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 640 // load current bytecode | |
| 641 load_unsigned_byte(rbx, Address(rsi, 0)); | |
| 642 dispatch_base(state, table); | |
| 643 } | |
| 644 | |
| 645 // remove activation | |
| 646 // | |
| 647 // Unlock the receiver if this is a synchronized method. | |
| 648 // Unlock any Java monitors from syncronized blocks. | |
| 649 // Remove the activation from the stack. | |
| 650 // | |
| 651 // If there are locked Java monitors | |
| 652 // If throw_monitor_exception | |
| 653 // throws IllegalMonitorStateException | |
| 654 // Else if install_monitor_exception | |
| 655 // installs IllegalMonitorStateException | |
| 656 // Else | |
| 657 // no error processing | |
| 658 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
| 659 bool throw_monitor_exception, | |
| 660 bool install_monitor_exception, | |
| 661 bool notify_jvmdi) { | |
| 662 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
| 663 // check if synchronized method | |
| 664 Label unlocked, unlock, no_unlock; | |
| 665 | |
| 666 get_thread(rcx); | |
| 667 const Address do_not_unlock_if_synchronized(rcx, | |
| 668 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 669 | |
| 670 movbool(rbx, do_not_unlock_if_synchronized); | |
| 304 | 671 mov(rdi,rbx); |
| 0 | 672 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
| 673 | |
| 304 | 674 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
| 0 | 675 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
| 676 | |
| 677 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
| 678 jcc(Assembler::zero, unlocked); | |
| 679 | |
| 680 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
| 681 // is set. | |
| 304 | 682 mov(rcx,rdi); |
| 0 | 683 testbool(rcx); |
| 684 jcc(Assembler::notZero, no_unlock); | |
| 685 | |
| 686 // unlock monitor | |
| 687 push(state); // save result | |
| 688 | |
| 689 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 690 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 691 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
| 304 | 692 lea (rdx, monitor); // address of first monitor |
| 0 | 693 |
| 304 | 694 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
| 695 testptr(rax, rax); | |
| 696 jcc (Assembler::notZero, unlock); | |
| 0 | 697 |
| 698 pop(state); | |
| 699 if (throw_monitor_exception) { | |
| 700 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 701 | |
| 702 // Entry already unlocked, need to throw exception | |
| 703 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 704 should_not_reach_here(); | |
| 705 } else { | |
| 706 // Monitor already unlocked during a stack unroll. | |
| 707 // If requested, install an illegal_monitor_state_exception. | |
| 708 // Continue with stack unrolling. | |
| 709 if (install_monitor_exception) { | |
| 710 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 711 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 712 } | |
| 713 jmp(unlocked); | |
| 714 } | |
| 715 | |
| 716 bind(unlock); | |
| 717 unlock_object(rdx); | |
| 718 pop(state); | |
| 719 | |
| 720 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
| 721 bind(unlocked); | |
| 722 | |
| 723 // rax, rdx: Might contain return value | |
| 724 | |
| 725 // Check that all monitors are unlocked | |
| 726 { | |
| 727 Label loop, exception, entry, restart; | |
| 728 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 729 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 730 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 731 | |
| 732 bind(restart); | |
| 304 | 733 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
| 734 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
| 0 | 735 jmp(entry); |
| 736 | |
| 737 // Entry already locked, need to throw exception | |
| 738 bind(exception); | |
| 739 | |
| 740 if (throw_monitor_exception) { | |
| 741 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 742 | |
| 743 // Throw exception | |
| 744 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 745 should_not_reach_here(); | |
| 746 } else { | |
| 747 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
| 748 // Unlock does not block, so don't have to worry about the frame | |
| 749 | |
| 750 push(state); | |
| 304 | 751 mov(rdx, rcx); |
| 0 | 752 unlock_object(rdx); |
| 753 pop(state); | |
| 754 | |
| 755 if (install_monitor_exception) { | |
| 756 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 757 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 758 } | |
| 759 | |
| 760 jmp(restart); | |
| 761 } | |
| 762 | |
| 763 bind(loop); | |
| 304 | 764 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
| 0 | 765 jcc(Assembler::notEqual, exception); |
| 766 | |
| 304 | 767 addptr(rcx, entry_size); // otherwise advance to next entry |
| 0 | 768 bind(entry); |
| 304 | 769 cmpptr(rcx, rbx); // check if bottom reached |
| 0 | 770 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 771 } | |
| 772 | |
| 773 bind(no_unlock); | |
| 774 | |
| 775 // jvmti support | |
| 776 if (notify_jvmdi) { | |
| 777 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
| 778 } else { | |
| 779 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
| 780 } | |
| 781 | |
| 782 // remove activation | |
| 304 | 783 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 784 leave(); // remove frame anchor |
| 304 | 785 pop(ret_addr); // get return address |
| 786 mov(rsp, rbx); // set sp to sender sp | |
| 0 | 787 if (UseSSE) { |
| 788 // float and double are returned in xmm register in SSE-mode | |
| 789 if (state == ftos && UseSSE >= 1) { | |
| 304 | 790 subptr(rsp, wordSize); |
| 0 | 791 fstp_s(Address(rsp, 0)); |
| 792 movflt(xmm0, Address(rsp, 0)); | |
| 304 | 793 addptr(rsp, wordSize); |
| 0 | 794 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 795 subptr(rsp, 2*wordSize); |
| 0 | 796 fstp_d(Address(rsp, 0)); |
| 797 movdbl(xmm0, Address(rsp, 0)); | |
| 304 | 798 addptr(rsp, 2*wordSize); |
| 0 | 799 } |
| 800 } | |
| 801 } | |
| 802 | |
| 803 #endif /* !CC_INTERP */ | |
| 804 | |
| 805 | |
| 806 // Lock object | |
| 807 // | |
| 808 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
| 809 // be initialized with object to lock | |
| 810 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
| 811 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 812 | |
| 813 if (UseHeavyMonitors) { | |
| 814 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 815 } else { | |
| 816 | |
| 817 Label done; | |
| 818 | |
| 819 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 820 const Register obj_reg = rcx; // Will contain the oop | |
| 821 | |
| 822 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
| 823 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
| 824 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
| 825 | |
| 826 Label slow_case; | |
| 827 | |
| 828 // Load object pointer into obj_reg %rcx | |
| 304 | 829 movptr(obj_reg, Address(lock_reg, obj_offset)); |
| 0 | 830 |
| 831 if (UseBiasedLocking) { | |
| 832 // Note: we use noreg for the temporary register since it's hard | |
| 833 // to come up with a free register on all incoming code paths | |
| 834 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
| 835 } | |
| 836 | |
| 837 // Load immediate 1 into swap_reg %rax, | |
| 304 | 838 movptr(swap_reg, (int32_t)1); |
| 0 | 839 |
| 840 // Load (object->mark() | 1) into swap_reg %rax, | |
| 304 | 841 orptr(swap_reg, Address(obj_reg, 0)); |
| 0 | 842 |
| 843 // Save (object->mark() | 1) into BasicLock's displaced header | |
| 304 | 844 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 845 |
| 846 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
| 847 if (os::is_MP()) { | |
| 848 lock(); | |
| 849 } | |
| 304 | 850 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
| 0 | 851 if (PrintBiasedLockingStatistics) { |
| 852 cond_inc32(Assembler::zero, | |
| 853 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 854 } | |
| 855 jcc(Assembler::zero, done); | |
| 856 | |
| 857 // Test if the oopMark is an obvious stack pointer, i.e., | |
| 858 // 1) (mark & 3) == 0, and | |
| 859 // 2) rsp <= mark < mark + os::pagesize() | |
| 860 // | |
| 861 // These 3 tests can be done by evaluating the following | |
| 862 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
| 863 // assuming both stack pointer and pagesize have their | |
| 864 // least significant 2 bits clear. | |
| 865 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
| 304 | 866 subptr(swap_reg, rsp); |
| 867 andptr(swap_reg, 3 - os::vm_page_size()); | |
| 0 | 868 |
| 869 // Save the test result, for recursive case, the result is zero | |
| 304 | 870 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 871 |
| 872 if (PrintBiasedLockingStatistics) { | |
| 873 cond_inc32(Assembler::zero, | |
| 874 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 875 } | |
| 876 jcc(Assembler::zero, done); | |
| 877 | |
| 878 bind(slow_case); | |
| 879 | |
| 880 // Call the runtime routine for slow case | |
| 881 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 882 | |
| 883 bind(done); | |
| 884 } | |
| 885 } | |
| 886 | |
| 887 | |
| 888 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
| 889 // | |
| 890 // Argument: rdx : Points to BasicObjectLock structure for lock | |
| 891 // Throw an IllegalMonitorException if object is not locked by current thread | |
| 892 // | |
| 893 // Uses: rax, rbx, rcx, rdx | |
| 894 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
| 895 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 896 | |
| 897 if (UseHeavyMonitors) { | |
| 898 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
| 899 } else { | |
| 900 Label done; | |
| 901 | |
| 902 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 903 const Register header_reg = rbx; // Will contain the old oopMark | |
| 904 const Register obj_reg = rcx; // Will contain the oop | |
| 905 | |
| 906 save_bcp(); // Save in case of exception | |
| 907 | |
| 908 // Convert from BasicObjectLock structure to object and BasicLock structure | |
| 909 // Store the BasicLock address into %rax, | |
| 304 | 910 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
| 0 | 911 |
| 912 // Load oop into obj_reg(%rcx) | |
| 304 | 913 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
| 0 | 914 |
| 915 // Free entry | |
|
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|
916 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
| 0 | 917 |
| 918 if (UseBiasedLocking) { | |
| 919 biased_locking_exit(obj_reg, header_reg, done); | |
| 920 } | |
| 921 | |
| 922 // Load the old header from BasicLock structure | |
| 304 | 923 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
| 0 | 924 |
| 925 // Test for recursion | |
| 304 | 926 testptr(header_reg, header_reg); |
| 0 | 927 |
| 928 // zero for recursive case | |
| 929 jcc(Assembler::zero, done); | |
| 930 | |
| 931 // Atomic swap back the old header | |
| 932 if (os::is_MP()) lock(); | |
| 304 | 933 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
| 0 | 934 |
| 935 // zero for recursive case | |
| 936 jcc(Assembler::zero, done); | |
| 937 | |
| 938 // Call the runtime routine for slow case. | |
| 304 | 939 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
| 0 | 940 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
| 941 | |
| 942 bind(done); | |
| 943 | |
| 944 restore_bcp(); | |
| 945 } | |
| 946 } | |
| 947 | |
| 948 | |
| 949 #ifndef CC_INTERP | |
| 950 | |
| 951 // Test ImethodDataPtr. If it is null, continue at the specified label | |
| 952 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
| 953 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 954 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
| 955 testptr(mdp, mdp); | |
| 0 | 956 jcc(Assembler::zero, zero_continue); |
| 957 } | |
| 958 | |
| 959 | |
| 960 // Set the method data pointer for the current bcp. | |
| 961 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 962 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 963 Label zero_continue; | |
| 304 | 964 push(rax); |
| 965 push(rbx); | |
| 0 | 966 |
| 967 get_method(rbx); | |
| 968 // Test MDO to avoid the call if it is NULL. | |
| 304 | 969 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 970 testptr(rax, rax); | |
| 0 | 971 jcc(Assembler::zero, zero_continue); |
| 972 | |
| 973 // rbx,: method | |
| 974 // rsi: bcp | |
| 975 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
| 976 // rax,: mdi | |
| 977 | |
| 304 | 978 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 979 testptr(rbx, rbx); | |
| 0 | 980 jcc(Assembler::zero, zero_continue); |
| 304 | 981 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); |
| 982 addptr(rbx, rax); | |
| 983 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx); | |
| 0 | 984 |
| 985 bind(zero_continue); | |
| 304 | 986 pop(rbx); |
| 987 pop(rax); | |
| 0 | 988 } |
| 989 | |
| 990 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 991 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 992 #ifdef ASSERT | |
| 993 Label verify_continue; | |
| 304 | 994 push(rax); |
| 995 push(rbx); | |
| 996 push(rcx); | |
| 997 push(rdx); | |
| 0 | 998 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
| 999 get_method(rbx); | |
| 1000 | |
| 1001 // If the mdp is valid, it will point to a DataLayout header which is | |
| 1002 // consistent with the bcp. The converse is highly probable also. | |
|
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|
1003 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
| 304 | 1004 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
| 1005 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
| 1006 cmpptr(rdx, rsi); | |
| 0 | 1007 jcc(Assembler::equal, verify_continue); |
| 1008 // rbx,: method | |
| 1009 // rsi: bcp | |
| 1010 // rcx: mdp | |
| 1011 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
| 1012 bind(verify_continue); | |
| 304 | 1013 pop(rdx); |
| 1014 pop(rcx); | |
| 1015 pop(rbx); | |
| 1016 pop(rax); | |
| 0 | 1017 #endif // ASSERT |
| 1018 } | |
| 1019 | |
| 1020 | |
| 1021 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
| 304 | 1022 // %%% this seems to be used to store counter data which is surely 32bits |
| 1023 // however 64bit side stores 64 bits which seems wrong | |
| 0 | 1024 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1025 Address data(mdp_in, constant); | |
| 304 | 1026 movptr(data, value); |
| 0 | 1027 } |
| 1028 | |
| 1029 | |
| 1030 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 1031 int constant, | |
| 1032 bool decrement) { | |
| 1033 // Counter address | |
| 1034 Address data(mdp_in, constant); | |
| 1035 | |
| 1036 increment_mdp_data_at(data, decrement); | |
| 1037 } | |
| 1038 | |
| 1039 | |
| 1040 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
| 1041 bool decrement) { | |
| 1042 | |
| 1043 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 1044 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1045 | |
| 304 | 1046 // %%% 64bit treats this as 64 bit which seems unlikely |
| 0 | 1047 if (decrement) { |
| 1048 // Decrement the register. Set condition codes. | |
| 1049 addl(data, -DataLayout::counter_increment); | |
| 1050 // If the decrement causes the counter to overflow, stay negative | |
| 1051 Label L; | |
| 1052 jcc(Assembler::negative, L); | |
| 1053 addl(data, DataLayout::counter_increment); | |
| 1054 bind(L); | |
| 1055 } else { | |
| 1056 assert(DataLayout::counter_increment == 1, | |
| 1057 "flow-free idiom only works with 1"); | |
| 1058 // Increment the register. Set carry flag. | |
| 1059 addl(data, DataLayout::counter_increment); | |
| 1060 // If the increment causes the counter to overflow, pull back by 1. | |
| 1061 sbbl(data, 0); | |
| 1062 } | |
| 1063 } | |
| 1064 | |
| 1065 | |
| 1066 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 1067 Register reg, | |
| 1068 int constant, | |
| 1069 bool decrement) { | |
| 1070 Address data(mdp_in, reg, Address::times_1, constant); | |
| 1071 | |
| 1072 increment_mdp_data_at(data, decrement); | |
| 1073 } | |
| 1074 | |
| 1075 | |
| 1076 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
| 1077 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1078 int header_offset = in_bytes(DataLayout::header_offset()); | |
| 1079 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
| 1080 // Set the flag | |
| 1081 orl(Address(mdp_in, header_offset), header_bits); | |
| 1082 } | |
| 1083 | |
| 1084 | |
| 1085 | |
| 1086 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
| 1087 int offset, | |
| 1088 Register value, | |
| 1089 Register test_value_out, | |
| 1090 Label& not_equal_continue) { | |
| 1091 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1092 if (test_value_out == noreg) { | |
| 304 | 1093 cmpptr(value, Address(mdp_in, offset)); |
| 0 | 1094 } else { |
| 1095 // Put the test value into a register, so caller can use it: | |
| 304 | 1096 movptr(test_value_out, Address(mdp_in, offset)); |
| 1097 cmpptr(test_value_out, value); | |
| 0 | 1098 } |
| 1099 jcc(Assembler::notEqual, not_equal_continue); | |
| 1100 } | |
| 1101 | |
| 1102 | |
| 1103 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
| 1104 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1105 Address disp_address(mdp_in, offset_of_disp); | |
| 304 | 1106 addptr(mdp_in,disp_address); |
| 1107 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1108 } |
| 1109 | |
| 1110 | |
| 1111 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
| 1112 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1113 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
| 304 | 1114 addptr(mdp_in, disp_address); |
| 1115 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1116 } |
| 1117 | |
| 1118 | |
| 1119 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
| 1120 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1121 addptr(mdp_in, constant); |
| 1122 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1123 } |
| 1124 | |
| 1125 | |
| 1126 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
| 1127 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1128 push(return_bci); // save/restore across call_VM |
| 0 | 1129 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
| 304 | 1130 pop(return_bci); |
| 0 | 1131 } |
| 1132 | |
| 1133 | |
| 1134 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
| 1135 if (ProfileInterpreter) { | |
| 1136 Label profile_continue; | |
| 1137 | |
| 1138 // If no method data exists, go to profile_continue. | |
| 1139 // Otherwise, assign to mdp | |
| 1140 test_method_data_pointer(mdp, profile_continue); | |
| 1141 | |
| 1142 // We are taking a branch. Increment the taken count. | |
| 1143 // We inline increment_mdp_data_at to return bumped_count in a register | |
| 1144 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
| 1145 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
| 304 | 1146 |
| 1147 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
| 0 | 1148 movl(bumped_count,data); |
| 1149 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 1150 addl(bumped_count, DataLayout::counter_increment); | |
| 1151 sbbl(bumped_count, 0); | |
| 1152 movl(data,bumped_count); // Store back out | |
| 1153 | |
| 1154 // The method data pointer needs to be updated to reflect the new target. | |
| 1155 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
| 1156 bind (profile_continue); | |
| 1157 } | |
| 1158 } | |
| 1159 | |
| 1160 | |
| 1161 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
| 1162 if (ProfileInterpreter) { | |
| 1163 Label profile_continue; | |
| 1164 | |
| 1165 // If no method data exists, go to profile_continue. | |
| 1166 test_method_data_pointer(mdp, profile_continue); | |
| 1167 | |
| 1168 // We are taking a branch. Increment the not taken count. | |
| 1169 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
| 1170 | |
| 1171 // The method data pointer needs to be updated to correspond to the next bytecode | |
| 1172 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
| 1173 bind (profile_continue); | |
| 1174 } | |
| 1175 } | |
| 1176 | |
| 1177 | |
| 1178 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
| 1179 if (ProfileInterpreter) { | |
| 1180 Label profile_continue; | |
| 1181 | |
| 1182 // If no method data exists, go to profile_continue. | |
| 1183 test_method_data_pointer(mdp, profile_continue); | |
| 1184 | |
| 1185 // We are making a call. Increment the count. | |
| 1186 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1187 | |
| 1188 // The method data pointer needs to be updated to reflect the new target. | |
| 1189 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
| 1190 bind (profile_continue); | |
| 1191 } | |
| 1192 } | |
| 1193 | |
| 1194 | |
| 1195 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
| 1196 if (ProfileInterpreter) { | |
| 1197 Label profile_continue; | |
| 1198 | |
| 1199 // If no method data exists, go to profile_continue. | |
| 1200 test_method_data_pointer(mdp, profile_continue); | |
| 1201 | |
| 1202 // We are making a call. Increment the count. | |
| 1203 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1204 | |
| 1205 // The method data pointer needs to be updated to reflect the new target. | |
| 1206 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1207 bind (profile_continue); | |
| 1208 } | |
| 1209 } | |
| 1210 | |
| 1211 | |
| 1212 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, Register reg2) { | |
| 1213 if (ProfileInterpreter) { | |
| 1214 Label profile_continue; | |
| 1215 | |
| 1216 // If no method data exists, go to profile_continue. | |
| 1217 test_method_data_pointer(mdp, profile_continue); | |
| 1218 | |
| 1219 // We are making a call. Increment the count. | |
| 1220 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1221 | |
| 1222 // Record the receiver type. | |
| 1223 record_klass_in_profile(receiver, mdp, reg2); | |
| 1224 | |
| 1225 // The method data pointer needs to be updated to reflect the new target. | |
| 1226 update_mdp_by_constant(mdp, | |
| 1227 in_bytes(VirtualCallData:: | |
| 1228 virtual_call_data_size())); | |
| 1229 bind(profile_continue); | |
| 1230 } | |
| 1231 } | |
| 1232 | |
| 1233 | |
| 1234 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1235 Register receiver, Register mdp, | |
| 1236 Register reg2, | |
| 1237 int start_row, Label& done) { | |
| 1238 int last_row = VirtualCallData::row_limit() - 1; | |
| 1239 assert(start_row <= last_row, "must be work left to do"); | |
| 1240 // Test this row for both the receiver and for null. | |
| 1241 // Take any of three different outcomes: | |
| 1242 // 1. found receiver => increment count and goto done | |
| 1243 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1244 // 3. found something else => keep looking for cases 1 and 2 | |
| 1245 // Case 3 is handled by a recursive call. | |
| 1246 for (int row = start_row; row <= last_row; row++) { | |
| 1247 Label next_test; | |
| 1248 bool test_for_null_also = (row == start_row); | |
| 1249 | |
| 1250 // See if the receiver is receiver[n]. | |
| 1251 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1252 test_mdp_data_at(mdp, recvr_offset, receiver, | |
| 1253 (test_for_null_also ? reg2 : noreg), | |
| 1254 next_test); | |
| 1255 // (Reg2 now contains the receiver from the CallData.) | |
| 1256 | |
| 1257 // The receiver is receiver[n]. Increment count[n]. | |
| 1258 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1259 increment_mdp_data_at(mdp, count_offset); | |
| 1260 jmp(done); | |
| 1261 bind(next_test); | |
| 1262 | |
| 1263 if (row == start_row) { | |
| 1264 // Failed the equality check on receiver[n]... Test for null. | |
| 304 | 1265 testptr(reg2, reg2); |
| 0 | 1266 if (start_row == last_row) { |
| 1267 // The only thing left to do is handle the null case. | |
| 1268 jcc(Assembler::notZero, done); | |
| 1269 break; | |
| 1270 } | |
| 1271 // Since null is rare, make it be the branch-taken case. | |
| 1272 Label found_null; | |
| 1273 jcc(Assembler::zero, found_null); | |
| 1274 | |
| 1275 // Put all the "Case 3" tests here. | |
| 1276 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done); | |
| 1277 | |
| 1278 // Found a null. Keep searching for a matching receiver, | |
| 1279 // but remember that this is an empty (unused) slot. | |
| 1280 bind(found_null); | |
| 1281 } | |
| 1282 } | |
| 1283 | |
| 1284 // In the fall-through case, we found no matching receiver, but we | |
| 1285 // observed the receiver[start_row] is NULL. | |
| 1286 | |
| 1287 // Fill in the receiver field and increment the count. | |
| 1288 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1289 set_mdp_data_at(mdp, recvr_offset, receiver); | |
| 1290 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 304 | 1291 movptr(reg2, (int32_t)DataLayout::counter_increment); |
| 0 | 1292 set_mdp_data_at(mdp, count_offset, reg2); |
| 1293 jmp(done); | |
| 1294 } | |
| 1295 | |
| 1296 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
| 1297 Register mdp, | |
| 1298 Register reg2) { | |
| 1299 assert(ProfileInterpreter, "must be profiling"); | |
| 1300 Label done; | |
| 1301 | |
| 1302 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done); | |
| 1303 | |
| 1304 bind (done); | |
| 1305 } | |
| 1306 | |
| 1307 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
| 1308 if (ProfileInterpreter) { | |
| 1309 Label profile_continue; | |
| 1310 uint row; | |
| 1311 | |
| 1312 // If no method data exists, go to profile_continue. | |
| 1313 test_method_data_pointer(mdp, profile_continue); | |
| 1314 | |
| 1315 // Update the total ret count. | |
| 1316 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1317 | |
| 1318 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1319 Label next_test; | |
| 1320 | |
| 1321 // See if return_bci is equal to bci[n]: | |
| 1322 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
| 1323 noreg, next_test); | |
| 1324 | |
| 1325 // return_bci is equal to bci[n]. Increment the count. | |
| 1326 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
| 1327 | |
| 1328 // The method data pointer needs to be updated to reflect the new target. | |
| 1329 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
| 1330 jmp(profile_continue); | |
| 1331 bind(next_test); | |
| 1332 } | |
| 1333 | |
| 1334 update_mdp_for_ret(return_bci); | |
| 1335 | |
| 1336 bind (profile_continue); | |
| 1337 } | |
| 1338 } | |
| 1339 | |
| 1340 | |
| 1341 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
| 1342 if (ProfileInterpreter) { | |
| 1343 Label profile_continue; | |
| 1344 | |
| 1345 // If no method data exists, go to profile_continue. | |
| 1346 test_method_data_pointer(mdp, profile_continue); | |
| 1347 | |
| 1348 // The method data pointer needs to be updated. | |
| 1349 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1350 if (TypeProfileCasts) { | |
| 1351 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1352 } | |
| 1353 update_mdp_by_constant(mdp, mdp_delta); | |
| 1354 | |
| 1355 bind (profile_continue); | |
| 1356 } | |
| 1357 } | |
| 1358 | |
| 1359 | |
| 1360 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
| 1361 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1362 Label profile_continue; | |
| 1363 | |
| 1364 // If no method data exists, go to profile_continue. | |
| 1365 test_method_data_pointer(mdp, profile_continue); | |
| 1366 | |
| 1367 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1368 // Back up the address, since we have already bumped the mdp. | |
| 1369 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1370 | |
| 1371 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1372 increment_mdp_data_at(mdp, count_offset, true); | |
| 1373 | |
| 1374 bind (profile_continue); | |
| 1375 } | |
| 1376 } | |
| 1377 | |
| 1378 | |
| 1379 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
| 1380 { | |
| 1381 if (ProfileInterpreter) { | |
| 1382 Label profile_continue; | |
| 1383 | |
| 1384 // If no method data exists, go to profile_continue. | |
| 1385 test_method_data_pointer(mdp, profile_continue); | |
| 1386 | |
| 1387 // The method data pointer needs to be updated. | |
| 1388 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1389 if (TypeProfileCasts) { | |
| 1390 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1391 | |
| 1392 // Record the object type. | |
| 1393 record_klass_in_profile(klass, mdp, reg2); | |
| 1394 assert(reg2 == rdi, "we know how to fix this blown reg"); | |
| 1395 restore_locals(); // Restore EDI | |
| 1396 } | |
| 1397 update_mdp_by_constant(mdp, mdp_delta); | |
| 1398 | |
| 1399 bind(profile_continue); | |
| 1400 } | |
| 1401 } | |
| 1402 | |
| 1403 | |
| 1404 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
| 1405 if (ProfileInterpreter) { | |
| 1406 Label profile_continue; | |
| 1407 | |
| 1408 // If no method data exists, go to profile_continue. | |
| 1409 test_method_data_pointer(mdp, profile_continue); | |
| 1410 | |
| 1411 // Update the default case count | |
| 1412 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
| 1413 | |
| 1414 // The method data pointer needs to be updated. | |
| 1415 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
| 1416 | |
| 1417 bind (profile_continue); | |
| 1418 } | |
| 1419 } | |
| 1420 | |
| 1421 | |
| 1422 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
| 1423 if (ProfileInterpreter) { | |
| 1424 Label profile_continue; | |
| 1425 | |
| 1426 // If no method data exists, go to profile_continue. | |
| 1427 test_method_data_pointer(mdp, profile_continue); | |
| 1428 | |
| 1429 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
| 304 | 1430 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size())); |
| 1431 // index is positive and so should have correct value if this code were | |
| 1432 // used on 64bits | |
| 1433 imulptr(index, reg2); | |
| 1434 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
| 0 | 1435 |
| 1436 // Update the case count | |
| 1437 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
| 1438 | |
| 1439 // The method data pointer needs to be updated. | |
| 1440 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
| 1441 | |
| 1442 bind (profile_continue); | |
| 1443 } | |
| 1444 } | |
| 1445 | |
| 1446 #endif // !CC_INTERP | |
| 1447 | |
| 1448 | |
| 1449 | |
| 1450 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
| 1451 if (state == atos) MacroAssembler::verify_oop(reg); | |
| 1452 } | |
| 1453 | |
| 1454 | |
| 1455 #ifndef CC_INTERP | |
| 1456 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 1457 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
| 1458 } | |
| 1459 | |
| 1460 #endif /* CC_INTERP */ | |
| 1461 | |
| 1462 | |
| 1463 void InterpreterMacroAssembler::notify_method_entry() { | |
| 1464 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1465 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1466 // the code to check if the event should be sent. | |
| 1467 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1468 Label L; | |
| 1469 get_thread(rcx); | |
| 1470 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1471 testl(rcx,rcx); | |
| 1472 jcc(Assembler::zero, L); | |
| 1473 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
| 1474 bind(L); | |
| 1475 } | |
| 1476 | |
| 1477 { | |
| 1478 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 1479 get_thread(rcx); | |
| 1480 get_method(rbx); | |
| 1481 call_VM_leaf( | |
| 1482 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
| 1483 } | |
|
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1484 |
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1485 // RedefineClasses() tracing support for obsolete method entry |
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1486 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1487 get_thread(rcx); |
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1488 get_method(rbx); |
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1489 call_VM_leaf( |
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1490 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1491 rcx, rbx); |
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1492 } |
| 0 | 1493 } |
| 1494 | |
| 1495 | |
| 1496 void InterpreterMacroAssembler::notify_method_exit( | |
| 1497 TosState state, NotifyMethodExitMode mode) { | |
| 1498 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1499 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1500 // the code to check if the event should be sent. | |
| 1501 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
| 1502 Label L; | |
| 1503 // Note: frame::interpreter_frame_result has a dependency on how the | |
| 1504 // method result is saved across the call to post_method_exit. If this | |
| 1505 // is changed then the interpreter_frame_result implementation will | |
| 1506 // need to be updated too. | |
| 1507 | |
| 1508 // For c++ interpreter the result is always stored at a known location in the frame | |
| 1509 // template interpreter will leave it on the top of the stack. | |
| 1510 NOT_CC_INTERP(push(state);) | |
| 1511 get_thread(rcx); | |
| 1512 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1513 testl(rcx,rcx); | |
| 1514 jcc(Assembler::zero, L); | |
| 1515 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
| 1516 bind(L); | |
| 1517 NOT_CC_INTERP(pop(state);) | |
| 1518 } | |
| 1519 | |
| 1520 { | |
| 1521 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 304 | 1522 NOT_CC_INTERP(push(state)); |
| 0 | 1523 get_thread(rbx); |
| 1524 get_method(rcx); | |
| 1525 call_VM_leaf( | |
| 1526 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
| 1527 rbx, rcx); | |
| 304 | 1528 NOT_CC_INTERP(pop(state)); |
| 0 | 1529 } |
| 1530 } |