Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_64.cpp @ 710:e5b0439ef4ae
6655638: dynamic languages need method handles
Summary: initial implementation, with known omissions (x86/64, sparc, compiler optim., c-oops, C++ interp.)
Reviewed-by: kvn, twisti, never
| author | jrose |
|---|---|
| date | Wed, 08 Apr 2009 10:56:49 -0700 |
| parents | bd441136a5ce |
| children | 3f06f139ef53 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 579 | 2 * Copyright 2003-2009 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_64.cpp.incl" | |
| 27 | |
| 28 | |
| 29 // Implementation of InterpreterMacroAssembler | |
| 30 | |
| 304 | 31 #ifdef CC_INTERP |
| 32 void InterpreterMacroAssembler::get_method(Register reg) { | |
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33 movptr(reg, Address(rbp, -((int)sizeof(BytecodeInterpreter) + 2 * wordSize))); |
| 304 | 34 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); |
| 35 } | |
| 36 #endif // CC_INTERP | |
| 37 | |
| 38 #ifndef CC_INTERP | |
| 39 | |
| 0 | 40 void InterpreterMacroAssembler::call_VM_leaf_base(address entry_point, |
| 41 int number_of_arguments) { | |
| 42 // interpreter specific | |
| 43 // | |
| 44 // Note: No need to save/restore bcp & locals (r13 & r14) pointer | |
| 45 // since these are callee saved registers and no blocking/ | |
| 46 // GC can happen in leaf calls. | |
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47 // Further Note: DO NOT save/restore bcp/locals. If a caller has |
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48 // already saved them so that it can use esi/edi as temporaries |
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49 // then a save/restore here will DESTROY the copy the caller |
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50 // saved! There used to be a save_bcp() that only happened in |
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51 // the ASSERT path (no restore_bcp). Which caused bizarre failures |
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52 // when jvm built with ASSERTs. |
| 0 | 53 #ifdef ASSERT |
| 54 { | |
| 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:" | |
| 59 " last_sp != NULL"); | |
| 60 bind(L); | |
| 61 } | |
| 62 #endif | |
| 63 // super call | |
| 64 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
| 65 // interpreter specific | |
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66 // Used to ASSERT that r13/r14 were equal to frame's bcp/locals |
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67 // but since they may not have been saved (and we don't want to |
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68 // save thme here (see note above) the assert is invalid. |
| 0 | 69 } |
| 70 | |
| 71 void InterpreterMacroAssembler::call_VM_base(Register oop_result, | |
| 72 Register java_thread, | |
| 73 Register last_java_sp, | |
| 74 address entry_point, | |
| 75 int number_of_arguments, | |
| 76 bool check_exceptions) { | |
| 77 // interpreter specific | |
| 78 // | |
| 79 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
| 80 // really make a difference for these runtime calls, since they are | |
| 81 // slow anyway. Btw., bcp must be saved/restored since it may change | |
| 82 // due to GC. | |
| 83 // assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
| 84 save_bcp(); | |
| 85 #ifdef ASSERT | |
| 86 { | |
| 87 Label L; | |
| 304 | 88 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 89 jcc(Assembler::equal, L); |
| 90 stop("InterpreterMacroAssembler::call_VM_leaf_base:" | |
| 91 " last_sp != NULL"); | |
| 92 bind(L); | |
| 93 } | |
| 94 #endif /* ASSERT */ | |
| 95 // super call | |
| 96 MacroAssembler::call_VM_base(oop_result, noreg, last_java_sp, | |
| 97 entry_point, number_of_arguments, | |
| 98 check_exceptions); | |
| 99 // interpreter specific | |
| 100 restore_bcp(); | |
| 101 restore_locals(); | |
| 102 } | |
| 103 | |
| 104 | |
| 105 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
| 106 if (JvmtiExport::can_pop_frame()) { | |
| 107 Label L; | |
| 108 // Initiate popframe handling only if it is not already being | |
| 109 // processed. If the flag has the popframe_processing bit set, it | |
| 110 // means that this code is called *during* popframe handling - we | |
| 111 // don't want to reenter. | |
| 112 // This method is only called just after the call into the vm in | |
| 113 // call_VM_base, so the arg registers are available. | |
| 114 movl(c_rarg0, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
| 115 testl(c_rarg0, JavaThread::popframe_pending_bit); | |
| 116 jcc(Assembler::zero, L); | |
| 117 testl(c_rarg0, JavaThread::popframe_processing_bit); | |
| 118 jcc(Assembler::notZero, L); | |
| 119 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
| 120 // address of the same-named entrypoint in the generated interpreter code. | |
| 121 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
| 122 jmp(rax); | |
| 123 bind(L); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 | |
| 128 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
| 304 | 129 movptr(rcx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 130 const Address tos_addr(rcx, JvmtiThreadState::earlyret_tos_offset()); |
| 131 const Address oop_addr(rcx, JvmtiThreadState::earlyret_oop_offset()); | |
| 132 const Address val_addr(rcx, JvmtiThreadState::earlyret_value_offset()); | |
| 133 switch (state) { | |
| 304 | 134 case atos: movptr(rax, oop_addr); |
| 135 movptr(oop_addr, (int32_t)NULL_WORD); | |
| 0 | 136 verify_oop(rax, state); break; |
| 304 | 137 case ltos: movptr(rax, val_addr); break; |
| 0 | 138 case btos: // fall through |
| 139 case ctos: // fall through | |
| 140 case stos: // fall through | |
| 141 case itos: movl(rax, val_addr); break; | |
| 142 case ftos: movflt(xmm0, val_addr); break; | |
| 143 case dtos: movdbl(xmm0, val_addr); break; | |
| 144 case vtos: /* nothing to do */ break; | |
| 145 default : ShouldNotReachHere(); | |
| 146 } | |
| 147 // Clean up tos value in the thread object | |
| 148 movl(tos_addr, (int) ilgl); | |
| 304 | 149 movl(val_addr, (int32_t) NULL_WORD); |
| 0 | 150 } |
| 151 | |
| 152 | |
| 153 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
| 154 if (JvmtiExport::can_force_early_return()) { | |
| 155 Label L; | |
| 304 | 156 movptr(c_rarg0, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
| 157 testptr(c_rarg0, c_rarg0); | |
| 0 | 158 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
| 159 | |
| 160 // Initiate earlyret handling only if it is not already being processed. | |
| 161 // If the flag has the earlyret_processing bit set, it means that this code | |
| 162 // is called *during* earlyret handling - we don't want to reenter. | |
| 163 movl(c_rarg0, Address(c_rarg0, JvmtiThreadState::earlyret_state_offset())); | |
| 164 cmpl(c_rarg0, JvmtiThreadState::earlyret_pending); | |
| 165 jcc(Assembler::notEqual, L); | |
| 166 | |
| 167 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
| 168 // same-named entrypoint in the generated interpreter code. | |
| 304 | 169 movptr(c_rarg0, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 170 movl(c_rarg0, Address(c_rarg0, JvmtiThreadState::earlyret_tos_offset())); |
| 171 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), c_rarg0); | |
| 172 jmp(rax); | |
| 173 bind(L); | |
| 174 } | |
| 175 } | |
| 176 | |
| 177 | |
| 178 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp( | |
| 179 Register reg, | |
| 180 int bcp_offset) { | |
| 181 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
| 182 movl(reg, Address(r13, bcp_offset)); | |
| 183 bswapl(reg); | |
| 184 shrl(reg, 16); | |
| 185 } | |
| 186 | |
| 187 | |
| 188 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, | |
| 189 Register index, | |
| 190 int bcp_offset) { | |
| 191 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
| 192 assert(cache != index, "must use different registers"); | |
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193 load_unsigned_short(index, Address(r13, bcp_offset)); |
| 304 | 194 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 195 assert(sizeof(ConstantPoolCacheEntry) == 4 * wordSize, "adjust code below"); |
| 196 // convert from field index to ConstantPoolCacheEntry index | |
| 197 shll(index, 2); | |
| 198 } | |
| 199 | |
| 200 | |
| 201 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, | |
| 202 Register tmp, | |
| 203 int bcp_offset) { | |
| 204 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); | |
| 205 assert(cache != tmp, "must use different register"); | |
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206 load_unsigned_short(tmp, Address(r13, bcp_offset)); |
| 0 | 207 assert(sizeof(ConstantPoolCacheEntry) == 4 * wordSize, "adjust code below"); |
| 208 // convert from field index to ConstantPoolCacheEntry index | |
| 209 // and from word offset to byte offset | |
| 210 shll(tmp, 2 + LogBytesPerWord); | |
| 304 | 211 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 212 // skip past the header |
| 304 | 213 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
| 214 addptr(cache, tmp); // construct pointer to cache entry | |
| 0 | 215 } |
| 216 | |
| 217 | |
| 218 // Generate a subtype check: branch to ok_is_subtype if sub_klass is a | |
| 219 // subtype of super_klass. | |
| 220 // | |
| 221 // Args: | |
| 222 // rax: superklass | |
| 223 // Rsub_klass: subklass | |
| 224 // | |
| 225 // Kills: | |
| 226 // rcx, rdi | |
| 227 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, | |
| 228 Label& ok_is_subtype) { | |
| 229 assert(Rsub_klass != rax, "rax holds superklass"); | |
| 230 assert(Rsub_klass != r14, "r14 holds locals"); | |
| 231 assert(Rsub_klass != r13, "r13 holds bcp"); | |
| 232 assert(Rsub_klass != rcx, "rcx holds 2ndary super array length"); | |
| 233 assert(Rsub_klass != rdi, "rdi holds 2ndary super array scan ptr"); | |
| 234 | |
| 235 // Profile the not-null value's klass. | |
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236 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
| 0 | 237 |
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238 // Do the check. |
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239 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
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240 |
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241 // Profile the failure of the check. |
| 0 | 242 profile_typecheck_failed(rcx); // blows rcx |
| 243 } | |
| 244 | |
| 245 | |
| 304 | 246 |
| 0 | 247 // Java Expression Stack |
| 248 | |
| 249 #ifdef ASSERT | |
| 250 // Verifies that the stack tag matches. Must be called before the stack | |
| 251 // value is popped off the stack. | |
| 252 void InterpreterMacroAssembler::verify_stack_tag(frame::Tag t) { | |
| 253 if (TaggedStackInterpreter) { | |
| 254 frame::Tag tag = t; | |
| 255 if (t == frame::TagCategory2) { | |
| 256 tag = frame::TagValue; | |
| 257 Label hokay; | |
| 304 | 258 cmpptr(Address(rsp, 3*wordSize), (int32_t)tag); |
| 0 | 259 jcc(Assembler::equal, hokay); |
| 260 stop("Java Expression stack tag high value is bad"); | |
| 261 bind(hokay); | |
| 262 } | |
| 263 Label okay; | |
| 304 | 264 cmpptr(Address(rsp, wordSize), (int32_t)tag); |
| 0 | 265 jcc(Assembler::equal, okay); |
| 266 // Also compare if the stack value is zero, then the tag might | |
| 267 // not have been set coming from deopt. | |
| 304 | 268 cmpptr(Address(rsp, 0), 0); |
| 0 | 269 jcc(Assembler::equal, okay); |
| 270 stop("Java Expression stack tag value is bad"); | |
| 271 bind(okay); | |
| 272 } | |
| 273 } | |
| 274 #endif // ASSERT | |
| 275 | |
| 276 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 277 debug_only(verify_stack_tag(frame::TagReference)); | |
| 304 | 278 pop(r); |
| 279 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 280 } |
| 281 | |
| 282 void InterpreterMacroAssembler::pop_ptr(Register r, Register tag) { | |
| 304 | 283 pop(r); |
| 284 if (TaggedStackInterpreter) pop(tag); | |
| 0 | 285 } |
| 286 | |
| 287 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 304 | 288 // XXX can't use pop currently, upper half non clean |
| 0 | 289 debug_only(verify_stack_tag(frame::TagValue)); |
| 290 movl(r, Address(rsp, 0)); | |
| 304 | 291 addptr(rsp, wordSize); |
| 292 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 293 } |
| 294 | |
| 295 void InterpreterMacroAssembler::pop_l(Register r) { | |
| 296 debug_only(verify_stack_tag(frame::TagCategory2)); | |
| 297 movq(r, Address(rsp, 0)); | |
| 304 | 298 addptr(rsp, 2 * Interpreter::stackElementSize()); |
| 0 | 299 } |
| 300 | |
| 301 void InterpreterMacroAssembler::pop_f(XMMRegister r) { | |
| 302 debug_only(verify_stack_tag(frame::TagValue)); | |
| 303 movflt(r, Address(rsp, 0)); | |
| 304 | 304 addptr(rsp, wordSize); |
| 305 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize); | |
| 0 | 306 } |
| 307 | |
| 308 void InterpreterMacroAssembler::pop_d(XMMRegister r) { | |
| 309 debug_only(verify_stack_tag(frame::TagCategory2)); | |
| 310 movdbl(r, Address(rsp, 0)); | |
| 304 | 311 addptr(rsp, 2 * Interpreter::stackElementSize()); |
| 0 | 312 } |
| 313 | |
| 314 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 304 | 315 if (TaggedStackInterpreter) push(frame::TagReference); |
| 316 push(r); | |
| 0 | 317 } |
| 318 | |
| 319 void InterpreterMacroAssembler::push_ptr(Register r, Register tag) { | |
| 304 | 320 if (TaggedStackInterpreter) push(tag); |
| 321 push(r); | |
| 0 | 322 } |
| 323 | |
| 324 void InterpreterMacroAssembler::push_i(Register r) { | |
| 304 | 325 if (TaggedStackInterpreter) push(frame::TagValue); |
| 326 push(r); | |
| 0 | 327 } |
| 328 | |
| 329 void InterpreterMacroAssembler::push_l(Register r) { | |
| 330 if (TaggedStackInterpreter) { | |
| 304 | 331 push(frame::TagValue); |
| 332 subptr(rsp, 1 * wordSize); | |
| 333 push(frame::TagValue); | |
| 334 subptr(rsp, 1 * wordSize); | |
| 0 | 335 } else { |
| 304 | 336 subptr(rsp, 2 * wordSize); |
| 0 | 337 } |
| 338 movq(Address(rsp, 0), r); | |
| 339 } | |
| 340 | |
| 341 void InterpreterMacroAssembler::push_f(XMMRegister r) { | |
| 304 | 342 if (TaggedStackInterpreter) push(frame::TagValue); |
| 343 subptr(rsp, wordSize); | |
| 0 | 344 movflt(Address(rsp, 0), r); |
| 345 } | |
| 346 | |
| 347 void InterpreterMacroAssembler::push_d(XMMRegister r) { | |
| 348 if (TaggedStackInterpreter) { | |
| 304 | 349 push(frame::TagValue); |
| 350 subptr(rsp, 1 * wordSize); | |
| 351 push(frame::TagValue); | |
| 352 subptr(rsp, 1 * wordSize); | |
| 0 | 353 } else { |
| 304 | 354 subptr(rsp, 2 * wordSize); |
| 0 | 355 } |
| 356 movdbl(Address(rsp, 0), r); | |
| 357 } | |
| 358 | |
| 359 void InterpreterMacroAssembler::pop(TosState state) { | |
| 360 switch (state) { | |
| 361 case atos: pop_ptr(); break; | |
| 362 case btos: | |
| 363 case ctos: | |
| 364 case stos: | |
| 365 case itos: pop_i(); break; | |
| 366 case ltos: pop_l(); break; | |
| 367 case ftos: pop_f(); break; | |
| 368 case dtos: pop_d(); break; | |
| 369 case vtos: /* nothing to do */ break; | |
| 370 default: ShouldNotReachHere(); | |
| 371 } | |
| 372 verify_oop(rax, state); | |
| 373 } | |
| 374 | |
| 375 void InterpreterMacroAssembler::push(TosState state) { | |
| 376 verify_oop(rax, state); | |
| 377 switch (state) { | |
| 378 case atos: push_ptr(); break; | |
| 379 case btos: | |
| 380 case ctos: | |
| 381 case stos: | |
| 382 case itos: push_i(); break; | |
| 383 case ltos: push_l(); break; | |
| 384 case ftos: push_f(); break; | |
| 385 case dtos: push_d(); break; | |
| 386 case vtos: /* nothing to do */ break; | |
| 387 default : ShouldNotReachHere(); | |
| 388 } | |
| 389 } | |
| 390 | |
| 391 | |
| 304 | 392 |
| 393 | |
| 0 | 394 // Tagged stack helpers for swap and dup |
| 395 void InterpreterMacroAssembler::load_ptr_and_tag(int n, Register val, | |
| 396 Register tag) { | |
| 304 | 397 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
| 0 | 398 if (TaggedStackInterpreter) { |
| 304 | 399 movptr(tag, Address(rsp, Interpreter::expr_tag_offset_in_bytes(n))); |
| 0 | 400 } |
| 401 } | |
| 402 | |
| 403 void InterpreterMacroAssembler::store_ptr_and_tag(int n, Register val, | |
| 404 Register tag) { | |
| 304 | 405 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); |
| 0 | 406 if (TaggedStackInterpreter) { |
| 304 | 407 movptr(Address(rsp, Interpreter::expr_tag_offset_in_bytes(n)), tag); |
| 0 | 408 } |
| 409 } | |
| 410 | |
| 411 | |
| 412 // Tagged local support | |
| 413 void InterpreterMacroAssembler::tag_local(frame::Tag tag, int n) { | |
| 414 if (TaggedStackInterpreter) { | |
| 415 if (tag == frame::TagCategory2) { | |
| 304 | 416 movptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n+1)), |
| 417 (int32_t)frame::TagValue); | |
| 418 movptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n)), | |
| 419 (int32_t)frame::TagValue); | |
| 0 | 420 } else { |
| 304 | 421 movptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)tag); |
| 0 | 422 } |
| 423 } | |
| 424 } | |
| 425 | |
| 426 void InterpreterMacroAssembler::tag_local(frame::Tag tag, Register idx) { | |
| 427 if (TaggedStackInterpreter) { | |
| 428 if (tag == frame::TagCategory2) { | |
| 304 | 429 movptr(Address(r14, idx, Address::times_8, |
| 430 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)frame::TagValue); | |
| 431 movptr(Address(r14, idx, Address::times_8, | |
| 432 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)frame::TagValue); | |
| 0 | 433 } else { |
| 304 | 434 movptr(Address(r14, idx, Address::times_8, Interpreter::local_tag_offset_in_bytes(0)), |
| 435 (int32_t)tag); | |
| 0 | 436 } |
| 437 } | |
| 438 } | |
| 439 | |
| 440 void InterpreterMacroAssembler::tag_local(Register tag, Register idx) { | |
| 441 if (TaggedStackInterpreter) { | |
| 442 // can only be TagValue or TagReference | |
| 304 | 443 movptr(Address(r14, idx, Address::times_8, Interpreter::local_tag_offset_in_bytes(0)), tag); |
| 0 | 444 } |
| 445 } | |
| 446 | |
| 447 | |
| 448 void InterpreterMacroAssembler::tag_local(Register tag, int n) { | |
| 449 if (TaggedStackInterpreter) { | |
| 450 // can only be TagValue or TagReference | |
| 304 | 451 movptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n)), tag); |
| 0 | 452 } |
| 453 } | |
| 454 | |
| 455 #ifdef ASSERT | |
| 456 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, int n) { | |
| 457 if (TaggedStackInterpreter) { | |
| 458 frame::Tag t = tag; | |
| 459 if (tag == frame::TagCategory2) { | |
| 460 Label nbl; | |
| 461 t = frame::TagValue; // change to what is stored in locals | |
| 304 | 462 cmpptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)t); |
| 0 | 463 jcc(Assembler::equal, nbl); |
| 464 stop("Local tag is bad for long/double"); | |
| 465 bind(nbl); | |
| 466 } | |
| 467 Label notBad; | |
| 304 | 468 cmpq(Address(r14, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)t); |
| 0 | 469 jcc(Assembler::equal, notBad); |
| 470 // Also compare if the local value is zero, then the tag might | |
| 471 // not have been set coming from deopt. | |
| 304 | 472 cmpptr(Address(r14, Interpreter::local_offset_in_bytes(n)), 0); |
| 0 | 473 jcc(Assembler::equal, notBad); |
| 474 stop("Local tag is bad"); | |
| 475 bind(notBad); | |
| 476 } | |
| 477 } | |
| 478 | |
| 479 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, Register idx) { | |
| 480 if (TaggedStackInterpreter) { | |
| 481 frame::Tag t = tag; | |
| 482 if (tag == frame::TagCategory2) { | |
| 483 Label nbl; | |
| 484 t = frame::TagValue; // change to what is stored in locals | |
| 304 | 485 cmpptr(Address(r14, idx, Address::times_8, Interpreter::local_tag_offset_in_bytes(1)), (int32_t)t); |
| 0 | 486 jcc(Assembler::equal, nbl); |
| 487 stop("Local tag is bad for long/double"); | |
| 488 bind(nbl); | |
| 489 } | |
| 490 Label notBad; | |
| 304 | 491 cmpptr(Address(r14, idx, Address::times_8, Interpreter::local_tag_offset_in_bytes(0)), (int32_t)t); |
| 0 | 492 jcc(Assembler::equal, notBad); |
| 493 // Also compare if the local value is zero, then the tag might | |
| 494 // not have been set coming from deopt. | |
| 304 | 495 cmpptr(Address(r14, idx, Address::times_8, Interpreter::local_offset_in_bytes(0)), 0); |
| 0 | 496 jcc(Assembler::equal, notBad); |
| 497 stop("Local tag is bad"); | |
| 498 bind(notBad); | |
| 499 } | |
| 500 } | |
| 501 #endif // ASSERT | |
| 502 | |
| 503 | |
| 504 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) { | |
| 505 MacroAssembler::call_VM_leaf_base(entry_point, 0); | |
| 506 } | |
| 507 | |
| 508 | |
| 509 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, | |
| 510 Register arg_1) { | |
| 511 if (c_rarg0 != arg_1) { | |
| 304 | 512 mov(c_rarg0, arg_1); |
| 0 | 513 } |
| 514 MacroAssembler::call_VM_leaf_base(entry_point, 1); | |
| 515 } | |
| 516 | |
| 517 | |
| 518 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, | |
| 519 Register arg_1, | |
| 520 Register arg_2) { | |
| 521 assert(c_rarg0 != arg_2, "smashed argument"); | |
| 522 assert(c_rarg1 != arg_1, "smashed argument"); | |
| 523 if (c_rarg0 != arg_1) { | |
| 304 | 524 mov(c_rarg0, arg_1); |
| 0 | 525 } |
| 526 if (c_rarg1 != arg_2) { | |
| 304 | 527 mov(c_rarg1, arg_2); |
| 0 | 528 } |
| 529 MacroAssembler::call_VM_leaf_base(entry_point, 2); | |
| 530 } | |
| 531 | |
| 532 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, | |
| 533 Register arg_1, | |
| 534 Register arg_2, | |
| 535 Register arg_3) { | |
| 536 assert(c_rarg0 != arg_2, "smashed argument"); | |
| 537 assert(c_rarg0 != arg_3, "smashed argument"); | |
| 538 assert(c_rarg1 != arg_1, "smashed argument"); | |
| 539 assert(c_rarg1 != arg_3, "smashed argument"); | |
| 540 assert(c_rarg2 != arg_1, "smashed argument"); | |
| 541 assert(c_rarg2 != arg_2, "smashed argument"); | |
| 542 if (c_rarg0 != arg_1) { | |
| 304 | 543 mov(c_rarg0, arg_1); |
| 0 | 544 } |
| 545 if (c_rarg1 != arg_2) { | |
| 304 | 546 mov(c_rarg1, arg_2); |
| 0 | 547 } |
| 548 if (c_rarg2 != arg_3) { | |
| 304 | 549 mov(c_rarg2, arg_3); |
| 0 | 550 } |
| 551 MacroAssembler::call_VM_leaf_base(entry_point, 3); | |
| 552 } | |
| 553 | |
| 710 | 554 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
| 0 | 555 // set sender sp |
| 304 | 556 lea(r13, Address(rsp, wordSize)); |
| 0 | 557 // record last_sp |
| 304 | 558 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), r13); |
| 710 | 559 } |
| 560 | |
| 561 | |
| 562 // Jump to from_interpreted entry of a call unless single stepping is possible | |
| 563 // in this thread in which case we must call the i2i entry | |
| 564 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
| 565 prepare_to_jump_from_interpreted(); | |
| 0 | 566 |
| 567 if (JvmtiExport::can_post_interpreter_events()) { | |
| 568 Label run_compiled_code; | |
| 569 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 570 // compiled code in threads for which the event is enabled. Check here for | |
| 571 // interp_only_mode if these events CAN be enabled. | |
| 572 get_thread(temp); | |
| 573 // interp_only is an int, on little endian it is sufficient to test the byte only | |
| 574 // Is a cmpl faster (ce | |
| 575 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); | |
| 576 jcc(Assembler::zero, run_compiled_code); | |
| 577 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); | |
| 578 bind(run_compiled_code); | |
| 579 } | |
| 580 | |
| 581 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
| 582 | |
| 583 } | |
| 584 | |
| 585 | |
| 586 // The following two routines provide a hook so that an implementation | |
| 587 // can schedule the dispatch in two parts. amd64 does not do this. | |
| 588 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
| 589 // Nothing amd64 specific to be done here | |
| 590 } | |
| 591 | |
| 592 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
| 593 dispatch_next(state, step); | |
| 594 } | |
| 595 | |
| 596 void InterpreterMacroAssembler::dispatch_base(TosState state, | |
| 597 address* table, | |
| 598 bool verifyoop) { | |
| 599 verify_FPU(1, state); | |
| 600 if (VerifyActivationFrameSize) { | |
| 601 Label L; | |
| 304 | 602 mov(rcx, rbp); |
| 603 subptr(rcx, rsp); | |
| 604 int32_t min_frame_size = | |
| 0 | 605 (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * |
| 606 wordSize; | |
| 304 | 607 cmpptr(rcx, (int32_t)min_frame_size); |
| 0 | 608 jcc(Assembler::greaterEqual, L); |
| 609 stop("broken stack frame"); | |
| 610 bind(L); | |
| 611 } | |
| 612 if (verifyoop) { | |
| 613 verify_oop(rax, state); | |
| 614 } | |
| 615 lea(rscratch1, ExternalAddress((address)table)); | |
| 616 jmp(Address(rscratch1, rbx, Address::times_8)); | |
| 617 } | |
| 618 | |
| 619 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
| 620 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 621 } | |
| 622 | |
| 623 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
| 624 dispatch_base(state, Interpreter::normal_table(state)); | |
| 625 } | |
| 626 | |
| 627 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
| 628 dispatch_base(state, Interpreter::normal_table(state), false); | |
| 629 } | |
| 630 | |
| 631 | |
| 632 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
| 633 // load next bytecode (load before advancing r13 to prevent AGI) | |
| 634 load_unsigned_byte(rbx, Address(r13, step)); | |
| 635 // advance r13 | |
| 304 | 636 increment(r13, step); |
| 0 | 637 dispatch_base(state, Interpreter::dispatch_table(state)); |
| 638 } | |
| 639 | |
| 640 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 641 // load current bytecode | |
| 642 load_unsigned_byte(rbx, Address(r13, 0)); | |
| 643 dispatch_base(state, table); | |
| 644 } | |
| 645 | |
| 646 // remove activation | |
| 647 // | |
| 648 // Unlock the receiver if this is a synchronized method. | |
| 649 // Unlock any Java monitors from syncronized blocks. | |
| 650 // Remove the activation from the stack. | |
| 651 // | |
| 652 // If there are locked Java monitors | |
| 653 // If throw_monitor_exception | |
| 654 // throws IllegalMonitorStateException | |
| 655 // Else if install_monitor_exception | |
| 656 // installs IllegalMonitorStateException | |
| 657 // Else | |
| 658 // no error processing | |
| 659 void InterpreterMacroAssembler::remove_activation( | |
| 660 TosState state, | |
| 661 Register ret_addr, | |
| 662 bool throw_monitor_exception, | |
| 663 bool install_monitor_exception, | |
| 664 bool notify_jvmdi) { | |
| 665 // Note: Registers rdx xmm0 may be in use for the | |
| 666 // result check if synchronized method | |
| 667 Label unlocked, unlock, no_unlock; | |
| 668 | |
| 669 // get the value of _do_not_unlock_if_synchronized into rdx | |
| 670 const Address do_not_unlock_if_synchronized(r15_thread, | |
| 671 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 672 movbool(rdx, do_not_unlock_if_synchronized); | |
| 673 movbool(do_not_unlock_if_synchronized, false); // reset the flag | |
| 674 | |
| 675 // get method access flags | |
| 304 | 676 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); |
| 0 | 677 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
| 678 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
| 679 jcc(Assembler::zero, unlocked); | |
| 680 | |
| 681 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
| 682 // is set. | |
| 683 testbool(rdx); | |
| 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 | |
| 690 // synchronized method. However, need to check that the object has | |
| 691 // not been unlocked by an explicit monitorexit bytecode. | |
| 692 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * | |
| 693 wordSize - (int) sizeof(BasicObjectLock)); | |
| 694 // We use c_rarg1 so that if we go slow path it will be the correct | |
| 695 // register for unlock_object to pass to VM directly | |
| 304 | 696 lea(c_rarg1, monitor); // address of first monitor |
| 0 | 697 |
| 304 | 698 movptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
| 699 testptr(rax, rax); | |
| 0 | 700 jcc(Assembler::notZero, unlock); |
| 701 | |
| 702 pop(state); | |
| 703 if (throw_monitor_exception) { | |
| 704 // Entry already unlocked, need to throw exception | |
| 705 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 706 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 707 should_not_reach_here(); | |
| 708 } else { | |
| 709 // Monitor already unlocked during a stack unroll. If requested, | |
| 710 // install an illegal_monitor_state_exception. Continue with | |
| 711 // stack unrolling. | |
| 712 if (install_monitor_exception) { | |
| 713 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 714 InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 715 } | |
| 716 jmp(unlocked); | |
| 717 } | |
| 718 | |
| 719 bind(unlock); | |
| 720 unlock_object(c_rarg1); | |
| 721 pop(state); | |
| 722 | |
| 723 // Check that for block-structured locking (i.e., that all locked | |
| 724 // objects has been unlocked) | |
| 725 bind(unlocked); | |
| 726 | |
| 727 // rax: Might contain return value | |
| 728 | |
| 729 // Check that all monitors are unlocked | |
| 730 { | |
| 731 Label loop, exception, entry, restart; | |
| 732 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 733 const Address monitor_block_top( | |
| 734 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 735 const Address monitor_block_bot( | |
| 736 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 737 | |
| 738 bind(restart); | |
| 739 // We use c_rarg1 so that if we go slow path it will be the correct | |
| 740 // register for unlock_object to pass to VM directly | |
| 304 | 741 movptr(c_rarg1, monitor_block_top); // points to current entry, starting |
| 0 | 742 // with top-most entry |
| 304 | 743 lea(rbx, monitor_block_bot); // points to word before bottom of |
| 0 | 744 // monitor block |
| 745 jmp(entry); | |
| 746 | |
| 747 // Entry already locked, need to throw exception | |
| 748 bind(exception); | |
| 749 | |
| 750 if (throw_monitor_exception) { | |
| 751 // Throw exception | |
| 752 MacroAssembler::call_VM(noreg, | |
| 753 CAST_FROM_FN_PTR(address, InterpreterRuntime:: | |
| 754 throw_illegal_monitor_state_exception)); | |
| 755 should_not_reach_here(); | |
| 756 } else { | |
| 757 // Stack unrolling. Unlock object and install illegal_monitor_exception. | |
| 758 // Unlock does not block, so don't have to worry about the frame. | |
| 759 // We don't have to preserve c_rarg1 since we are going to throw an exception. | |
| 760 | |
| 761 push(state); | |
| 762 unlock_object(c_rarg1); | |
| 763 pop(state); | |
| 764 | |
| 765 if (install_monitor_exception) { | |
| 766 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 767 InterpreterRuntime:: | |
| 768 new_illegal_monitor_state_exception)); | |
| 769 } | |
| 770 | |
| 771 jmp(restart); | |
| 772 } | |
| 773 | |
| 774 bind(loop); | |
| 775 // check if current entry is used | |
| 304 | 776 cmpptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL); |
| 0 | 777 jcc(Assembler::notEqual, exception); |
| 778 | |
| 304 | 779 addptr(c_rarg1, entry_size); // otherwise advance to next entry |
| 0 | 780 bind(entry); |
| 304 | 781 cmpptr(c_rarg1, rbx); // check if bottom reached |
| 0 | 782 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 783 } | |
| 784 | |
| 785 bind(no_unlock); | |
| 786 | |
| 787 // jvmti support | |
| 788 if (notify_jvmdi) { | |
| 789 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
| 790 } else { | |
| 791 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
| 792 } | |
| 793 | |
| 794 // remove activation | |
| 795 // get sender sp | |
| 304 | 796 movptr(rbx, |
| 797 Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); | |
| 0 | 798 leave(); // remove frame anchor |
| 304 | 799 pop(ret_addr); // get return address |
| 800 mov(rsp, rbx); // set sp to sender sp | |
| 0 | 801 } |
| 802 | |
| 304 | 803 #endif // C_INTERP |
| 804 | |
| 0 | 805 // Lock object |
| 806 // | |
| 807 // Args: | |
| 808 // c_rarg1: BasicObjectLock to be used for locking | |
| 809 // | |
| 810 // Kills: | |
| 811 // rax | |
| 812 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, .. (param regs) | |
| 813 // rscratch1, rscratch2 (scratch regs) | |
| 814 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
| 815 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be c_rarg1"); | |
| 816 | |
| 817 if (UseHeavyMonitors) { | |
| 818 call_VM(noreg, | |
| 819 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), | |
| 820 lock_reg); | |
| 821 } else { | |
| 822 Label done; | |
| 823 | |
| 824 const Register swap_reg = rax; // Must use rax for cmpxchg instruction | |
| 825 const Register obj_reg = c_rarg3; // Will contain the oop | |
| 826 | |
| 827 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
| 828 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
| 829 const int mark_offset = lock_offset + | |
| 830 BasicLock::displaced_header_offset_in_bytes(); | |
| 831 | |
| 832 Label slow_case; | |
| 833 | |
| 834 // Load object pointer into obj_reg %c_rarg3 | |
| 304 | 835 movptr(obj_reg, Address(lock_reg, obj_offset)); |
| 0 | 836 |
| 837 if (UseBiasedLocking) { | |
| 838 biased_locking_enter(lock_reg, obj_reg, swap_reg, rscratch1, false, done, &slow_case); | |
| 839 } | |
| 840 | |
| 841 // Load immediate 1 into swap_reg %rax | |
| 842 movl(swap_reg, 1); | |
| 843 | |
| 844 // Load (object->mark() | 1) into swap_reg %rax | |
| 304 | 845 orptr(swap_reg, Address(obj_reg, 0)); |
| 0 | 846 |
| 847 // Save (object->mark() | 1) into BasicLock's displaced header | |
| 304 | 848 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 849 |
| 850 assert(lock_offset == 0, | |
| 851 "displached header must be first word in BasicObjectLock"); | |
| 852 | |
| 853 if (os::is_MP()) lock(); | |
| 304 | 854 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
| 0 | 855 if (PrintBiasedLockingStatistics) { |
| 856 cond_inc32(Assembler::zero, | |
| 857 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 858 } | |
| 859 jcc(Assembler::zero, done); | |
| 860 | |
| 861 // Test if the oopMark is an obvious stack pointer, i.e., | |
| 862 // 1) (mark & 7) == 0, and | |
| 863 // 2) rsp <= mark < mark + os::pagesize() | |
| 864 // | |
| 865 // These 3 tests can be done by evaluating the following | |
| 866 // expression: ((mark - rsp) & (7 - os::vm_page_size())), | |
| 867 // assuming both stack pointer and pagesize have their | |
| 868 // least significant 3 bits clear. | |
| 869 // NOTE: the oopMark is in swap_reg %rax as the result of cmpxchg | |
| 304 | 870 subptr(swap_reg, rsp); |
| 871 andptr(swap_reg, 7 - os::vm_page_size()); | |
| 0 | 872 |
| 873 // Save the test result, for recursive case, the result is zero | |
| 304 | 874 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 875 |
| 876 if (PrintBiasedLockingStatistics) { | |
| 877 cond_inc32(Assembler::zero, | |
| 878 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 879 } | |
| 880 jcc(Assembler::zero, done); | |
| 881 | |
| 882 bind(slow_case); | |
| 883 | |
| 884 // Call the runtime routine for slow case | |
| 885 call_VM(noreg, | |
| 886 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), | |
| 887 lock_reg); | |
| 888 | |
| 889 bind(done); | |
| 890 } | |
| 891 } | |
| 892 | |
| 893 | |
| 894 // Unlocks an object. Used in monitorexit bytecode and | |
| 895 // remove_activation. Throws an IllegalMonitorException if object is | |
| 896 // not locked by current thread. | |
| 897 // | |
| 898 // Args: | |
| 899 // c_rarg1: BasicObjectLock for lock | |
| 900 // | |
| 901 // Kills: | |
| 902 // rax | |
| 903 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ... (param regs) | |
| 904 // rscratch1, rscratch2 (scratch regs) | |
| 905 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
| 906 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be rarg1"); | |
| 907 | |
| 908 if (UseHeavyMonitors) { | |
| 909 call_VM(noreg, | |
| 910 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), | |
| 911 lock_reg); | |
| 912 } else { | |
| 913 Label done; | |
| 914 | |
| 915 const Register swap_reg = rax; // Must use rax for cmpxchg instruction | |
| 916 const Register header_reg = c_rarg2; // Will contain the old oopMark | |
| 917 const Register obj_reg = c_rarg3; // Will contain the oop | |
| 918 | |
| 919 save_bcp(); // Save in case of exception | |
| 920 | |
| 921 // Convert from BasicObjectLock structure to object and BasicLock | |
| 922 // structure Store the BasicLock address into %rax | |
| 304 | 923 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
| 0 | 924 |
| 925 // Load oop into obj_reg(%c_rarg3) | |
| 304 | 926 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes())); |
| 0 | 927 |
| 928 // Free entry | |
| 304 | 929 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); |
| 0 | 930 |
| 931 if (UseBiasedLocking) { | |
| 932 biased_locking_exit(obj_reg, header_reg, done); | |
| 933 } | |
| 934 | |
| 935 // Load the old header from BasicLock structure | |
| 304 | 936 movptr(header_reg, Address(swap_reg, |
| 937 BasicLock::displaced_header_offset_in_bytes())); | |
| 0 | 938 |
| 939 // Test for recursion | |
| 304 | 940 testptr(header_reg, header_reg); |
| 0 | 941 |
| 942 // zero for recursive case | |
| 943 jcc(Assembler::zero, done); | |
| 944 | |
| 945 // Atomic swap back the old header | |
| 946 if (os::is_MP()) lock(); | |
| 304 | 947 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
| 0 | 948 |
| 949 // zero for recursive case | |
| 950 jcc(Assembler::zero, done); | |
| 951 | |
| 952 // Call the runtime routine for slow case. | |
| 304 | 953 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), |
| 0 | 954 obj_reg); // restore obj |
| 955 call_VM(noreg, | |
| 956 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), | |
| 957 lock_reg); | |
| 958 | |
| 959 bind(done); | |
| 960 | |
| 961 restore_bcp(); | |
| 962 } | |
| 963 } | |
| 964 | |
| 304 | 965 #ifndef CC_INTERP |
| 0 | 966 |
| 967 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, | |
| 968 Label& zero_continue) { | |
| 969 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 970 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
| 971 testptr(mdp, mdp); | |
| 0 | 972 jcc(Assembler::zero, zero_continue); |
| 973 } | |
| 974 | |
| 975 | |
| 976 // Set the method data pointer for the current bcp. | |
| 977 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 978 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 979 Label zero_continue; | |
| 304 | 980 push(rax); |
| 981 push(rbx); | |
| 0 | 982 |
| 983 get_method(rbx); | |
| 984 // Test MDO to avoid the call if it is NULL. | |
| 304 | 985 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 986 testptr(rax, rax); | |
| 0 | 987 jcc(Assembler::zero, zero_continue); |
| 988 | |
| 989 // rbx: method | |
| 990 // r13: bcp | |
| 991 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, r13); | |
| 992 // rax: mdi | |
| 993 | |
| 304 | 994 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 995 testptr(rbx, rbx); | |
| 0 | 996 jcc(Assembler::zero, zero_continue); |
| 304 | 997 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); |
| 998 addptr(rbx, rax); | |
| 999 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx); | |
| 0 | 1000 |
| 1001 bind(zero_continue); | |
| 304 | 1002 pop(rbx); |
| 1003 pop(rax); | |
| 0 | 1004 } |
| 1005 | |
| 1006 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 1007 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1008 #ifdef ASSERT | |
| 1009 Label verify_continue; | |
| 304 | 1010 push(rax); |
| 1011 push(rbx); | |
| 1012 push(c_rarg3); | |
| 1013 push(c_rarg2); | |
| 0 | 1014 test_method_data_pointer(c_rarg3, verify_continue); // If mdp is zero, continue |
| 1015 get_method(rbx); | |
| 1016 | |
| 1017 // If the mdp is valid, it will point to a DataLayout header which is | |
| 1018 // consistent with the bcp. The converse is highly probable also. | |
|
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1019 load_unsigned_short(c_rarg2, |
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1020 Address(c_rarg3, in_bytes(DataLayout::bci_offset()))); |
| 304 | 1021 addptr(c_rarg2, Address(rbx, methodOopDesc::const_offset())); |
| 1022 lea(c_rarg2, Address(c_rarg2, constMethodOopDesc::codes_offset())); | |
| 1023 cmpptr(c_rarg2, r13); | |
| 0 | 1024 jcc(Assembler::equal, verify_continue); |
| 1025 // rbx: method | |
| 1026 // r13: bcp | |
| 1027 // c_rarg3: mdp | |
| 1028 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), | |
| 1029 rbx, r13, c_rarg3); | |
| 1030 bind(verify_continue); | |
| 304 | 1031 pop(c_rarg2); |
| 1032 pop(c_rarg3); | |
| 1033 pop(rbx); | |
| 1034 pop(rax); | |
| 0 | 1035 #endif // ASSERT |
| 1036 } | |
| 1037 | |
| 1038 | |
| 1039 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, | |
| 1040 int constant, | |
| 1041 Register value) { | |
| 1042 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1043 Address data(mdp_in, constant); | |
| 304 | 1044 movptr(data, value); |
| 0 | 1045 } |
| 1046 | |
| 1047 | |
| 1048 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 1049 int constant, | |
| 1050 bool decrement) { | |
| 1051 // Counter address | |
| 1052 Address data(mdp_in, constant); | |
| 1053 | |
| 1054 increment_mdp_data_at(data, decrement); | |
| 1055 } | |
| 1056 | |
| 1057 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
| 1058 bool decrement) { | |
| 1059 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1060 // %%% this does 64bit counters at best it is wasting space |
| 1061 // at worst it is a rare bug when counters overflow | |
| 0 | 1062 |
| 1063 if (decrement) { | |
| 1064 // Decrement the register. Set condition codes. | |
| 304 | 1065 addptr(data, (int32_t) -DataLayout::counter_increment); |
| 0 | 1066 // If the decrement causes the counter to overflow, stay negative |
| 1067 Label L; | |
| 1068 jcc(Assembler::negative, L); | |
| 304 | 1069 addptr(data, (int32_t) DataLayout::counter_increment); |
| 0 | 1070 bind(L); |
| 1071 } else { | |
| 1072 assert(DataLayout::counter_increment == 1, | |
| 1073 "flow-free idiom only works with 1"); | |
| 1074 // Increment the register. Set carry flag. | |
| 304 | 1075 addptr(data, DataLayout::counter_increment); |
| 0 | 1076 // If the increment causes the counter to overflow, pull back by 1. |
| 304 | 1077 sbbptr(data, (int32_t)0); |
| 0 | 1078 } |
| 1079 } | |
| 1080 | |
| 1081 | |
| 1082 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 1083 Register reg, | |
| 1084 int constant, | |
| 1085 bool decrement) { | |
| 1086 Address data(mdp_in, reg, Address::times_1, constant); | |
| 1087 | |
| 1088 increment_mdp_data_at(data, decrement); | |
| 1089 } | |
| 1090 | |
| 1091 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, | |
| 1092 int flag_byte_constant) { | |
| 1093 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1094 int header_offset = in_bytes(DataLayout::header_offset()); | |
| 1095 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
| 1096 // Set the flag | |
| 1097 orl(Address(mdp_in, header_offset), header_bits); | |
| 1098 } | |
| 1099 | |
| 1100 | |
| 1101 | |
| 1102 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
| 1103 int offset, | |
| 1104 Register value, | |
| 1105 Register test_value_out, | |
| 1106 Label& not_equal_continue) { | |
| 1107 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1108 if (test_value_out == noreg) { | |
| 304 | 1109 cmpptr(value, Address(mdp_in, offset)); |
| 0 | 1110 } else { |
| 1111 // Put the test value into a register, so caller can use it: | |
| 304 | 1112 movptr(test_value_out, Address(mdp_in, offset)); |
| 1113 cmpptr(test_value_out, value); | |
| 0 | 1114 } |
| 1115 jcc(Assembler::notEqual, not_equal_continue); | |
| 1116 } | |
| 1117 | |
| 1118 | |
| 1119 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, | |
| 1120 int offset_of_disp) { | |
| 1121 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1122 Address disp_address(mdp_in, offset_of_disp); | |
| 304 | 1123 addptr(mdp_in, disp_address); |
| 1124 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1125 } |
| 1126 | |
| 1127 | |
| 1128 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, | |
| 1129 Register reg, | |
| 1130 int offset_of_disp) { | |
| 1131 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1132 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
| 304 | 1133 addptr(mdp_in, disp_address); |
| 1134 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1135 } |
| 1136 | |
| 1137 | |
| 1138 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, | |
| 1139 int constant) { | |
| 1140 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1141 addptr(mdp_in, constant); |
| 1142 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1143 } |
| 1144 | |
| 1145 | |
| 1146 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
| 1147 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1148 push(return_bci); // save/restore across call_VM |
| 0 | 1149 call_VM(noreg, |
| 1150 CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), | |
| 1151 return_bci); | |
| 304 | 1152 pop(return_bci); |
| 0 | 1153 } |
| 1154 | |
| 1155 | |
| 1156 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, | |
| 1157 Register bumped_count) { | |
| 1158 if (ProfileInterpreter) { | |
| 1159 Label profile_continue; | |
| 1160 | |
| 1161 // If no method data exists, go to profile_continue. | |
| 1162 // Otherwise, assign to mdp | |
| 1163 test_method_data_pointer(mdp, profile_continue); | |
| 1164 | |
| 1165 // We are taking a branch. Increment the taken count. | |
| 1166 // We inline increment_mdp_data_at to return bumped_count in a register | |
| 1167 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
| 1168 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
| 304 | 1169 movptr(bumped_count, data); |
| 0 | 1170 assert(DataLayout::counter_increment == 1, |
| 1171 "flow-free idiom only works with 1"); | |
| 304 | 1172 addptr(bumped_count, DataLayout::counter_increment); |
| 1173 sbbptr(bumped_count, 0); | |
| 1174 movptr(data, bumped_count); // Store back out | |
| 0 | 1175 |
| 1176 // The method data pointer needs to be updated to reflect the new target. | |
| 1177 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
| 1178 bind(profile_continue); | |
| 1179 } | |
| 1180 } | |
| 1181 | |
| 1182 | |
| 1183 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
| 1184 if (ProfileInterpreter) { | |
| 1185 Label profile_continue; | |
| 1186 | |
| 1187 // If no method data exists, go to profile_continue. | |
| 1188 test_method_data_pointer(mdp, profile_continue); | |
| 1189 | |
| 1190 // We are taking a branch. Increment the not taken count. | |
| 1191 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
| 1192 | |
| 1193 // The method data pointer needs to be updated to correspond to | |
| 1194 // the next bytecode | |
| 1195 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
| 1196 bind(profile_continue); | |
| 1197 } | |
| 1198 } | |
| 1199 | |
| 1200 | |
| 1201 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
| 1202 if (ProfileInterpreter) { | |
| 1203 Label profile_continue; | |
| 1204 | |
| 1205 // If no method data exists, go to profile_continue. | |
| 1206 test_method_data_pointer(mdp, profile_continue); | |
| 1207 | |
| 1208 // We are making a call. Increment the count. | |
| 1209 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1210 | |
| 1211 // The method data pointer needs to be updated to reflect the new target. | |
| 1212 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
| 1213 bind(profile_continue); | |
| 1214 } | |
| 1215 } | |
| 1216 | |
| 1217 | |
| 1218 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
| 1219 if (ProfileInterpreter) { | |
| 1220 Label profile_continue; | |
| 1221 | |
| 1222 // If no method data exists, go to profile_continue. | |
| 1223 test_method_data_pointer(mdp, profile_continue); | |
| 1224 | |
| 1225 // We are making a call. Increment the count. | |
| 1226 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1227 | |
| 1228 // The method data pointer needs to be updated to reflect the new target. | |
| 1229 update_mdp_by_constant(mdp, | |
| 1230 in_bytes(VirtualCallData:: | |
| 1231 virtual_call_data_size())); | |
| 1232 bind(profile_continue); | |
| 1233 } | |
| 1234 } | |
| 1235 | |
| 1236 | |
| 1237 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, | |
| 1238 Register mdp, | |
| 1239 Register reg2) { | |
| 1240 if (ProfileInterpreter) { | |
| 1241 Label profile_continue; | |
| 1242 | |
| 1243 // If no method data exists, go to profile_continue. | |
| 1244 test_method_data_pointer(mdp, profile_continue); | |
| 1245 | |
| 1246 // We are making a call. Increment the count. | |
| 1247 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1248 | |
| 1249 // Record the receiver type. | |
| 1250 record_klass_in_profile(receiver, mdp, reg2); | |
| 1251 | |
| 1252 // The method data pointer needs to be updated to reflect the new target. | |
| 1253 update_mdp_by_constant(mdp, | |
| 1254 in_bytes(VirtualCallData:: | |
| 1255 virtual_call_data_size())); | |
| 1256 bind(profile_continue); | |
| 1257 } | |
| 1258 } | |
| 1259 | |
| 1260 // This routine creates a state machine for updating the multi-row | |
| 1261 // type profile at a virtual call site (or other type-sensitive bytecode). | |
| 1262 // The machine visits each row (of receiver/count) until the receiver type | |
| 1263 // is found, or until it runs out of rows. At the same time, it remembers | |
| 1264 // the location of the first empty row. (An empty row records null for its | |
| 1265 // receiver, and can be allocated for a newly-observed receiver type.) | |
| 1266 // Because there are two degrees of freedom in the state, a simple linear | |
| 1267 // search will not work; it must be a decision tree. Hence this helper | |
| 1268 // function is recursive, to generate the required tree structured code. | |
| 1269 // It's the interpreter, so we are trading off code space for speed. | |
| 1270 // See below for example code. | |
| 1271 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1272 Register receiver, Register mdp, | |
| 1273 Register reg2, | |
| 1274 int start_row, Label& done) { | |
| 1275 int last_row = VirtualCallData::row_limit() - 1; | |
| 1276 assert(start_row <= last_row, "must be work left to do"); | |
| 1277 // Test this row for both the receiver and for null. | |
| 1278 // Take any of three different outcomes: | |
| 1279 // 1. found receiver => increment count and goto done | |
| 1280 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1281 // 3. found something else => keep looking for cases 1 and 2 | |
| 1282 // Case 3 is handled by a recursive call. | |
| 1283 for (int row = start_row; row <= last_row; row++) { | |
| 1284 Label next_test; | |
| 1285 bool test_for_null_also = (row == start_row); | |
| 1286 | |
| 1287 // See if the receiver is receiver[n]. | |
| 1288 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1289 test_mdp_data_at(mdp, recvr_offset, receiver, | |
| 1290 (test_for_null_also ? reg2 : noreg), | |
| 1291 next_test); | |
| 1292 // (Reg2 now contains the receiver from the CallData.) | |
| 1293 | |
| 1294 // The receiver is receiver[n]. Increment count[n]. | |
| 1295 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1296 increment_mdp_data_at(mdp, count_offset); | |
| 1297 jmp(done); | |
| 1298 bind(next_test); | |
| 1299 | |
| 1300 if (test_for_null_also) { | |
| 1301 // Failed the equality check on receiver[n]... Test for null. | |
| 304 | 1302 testptr(reg2, reg2); |
| 0 | 1303 if (start_row == last_row) { |
| 1304 // The only thing left to do is handle the null case. | |
| 1305 jcc(Assembler::notZero, done); | |
| 1306 break; | |
| 1307 } | |
| 1308 // Since null is rare, make it be the branch-taken case. | |
| 1309 Label found_null; | |
| 1310 jcc(Assembler::zero, found_null); | |
| 1311 | |
| 1312 // Put all the "Case 3" tests here. | |
| 1313 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done); | |
| 1314 | |
| 1315 // Found a null. Keep searching for a matching receiver, | |
| 1316 // but remember that this is an empty (unused) slot. | |
| 1317 bind(found_null); | |
| 1318 } | |
| 1319 } | |
| 1320 | |
| 1321 // In the fall-through case, we found no matching receiver, but we | |
| 1322 // observed the receiver[start_row] is NULL. | |
| 1323 | |
| 1324 // Fill in the receiver field and increment the count. | |
| 1325 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1326 set_mdp_data_at(mdp, recvr_offset, receiver); | |
| 1327 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 1328 movl(reg2, DataLayout::counter_increment); | |
| 1329 set_mdp_data_at(mdp, count_offset, reg2); | |
| 1330 jmp(done); | |
| 1331 } | |
| 1332 | |
| 1333 // Example state machine code for three profile rows: | |
| 1334 // // main copy of decision tree, rooted at row[1] | |
| 1335 // if (row[0].rec == rec) { row[0].incr(); goto done; } | |
| 1336 // if (row[0].rec != NULL) { | |
| 1337 // // inner copy of decision tree, rooted at row[1] | |
| 1338 // if (row[1].rec == rec) { row[1].incr(); goto done; } | |
| 1339 // if (row[1].rec != NULL) { | |
| 1340 // // degenerate decision tree, rooted at row[2] | |
| 1341 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
| 1342 // if (row[2].rec != NULL) { goto done; } // overflow | |
| 1343 // row[2].init(rec); goto done; | |
| 1344 // } else { | |
| 1345 // // remember row[1] is empty | |
| 1346 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
| 1347 // row[1].init(rec); goto done; | |
| 1348 // } | |
| 1349 // } else { | |
| 1350 // // remember row[0] is empty | |
| 1351 // if (row[1].rec == rec) { row[1].incr(); goto done; } | |
| 1352 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
| 1353 // row[0].init(rec); goto done; | |
| 1354 // } | |
| 1355 | |
| 1356 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
| 1357 Register mdp, | |
| 1358 Register reg2) { | |
| 1359 assert(ProfileInterpreter, "must be profiling"); | |
| 1360 Label done; | |
| 1361 | |
| 1362 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done); | |
| 1363 | |
| 1364 bind (done); | |
| 1365 } | |
| 1366 | |
| 1367 void InterpreterMacroAssembler::profile_ret(Register return_bci, | |
| 1368 Register mdp) { | |
| 1369 if (ProfileInterpreter) { | |
| 1370 Label profile_continue; | |
| 1371 uint row; | |
| 1372 | |
| 1373 // If no method data exists, go to profile_continue. | |
| 1374 test_method_data_pointer(mdp, profile_continue); | |
| 1375 | |
| 1376 // Update the total ret count. | |
| 1377 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1378 | |
| 1379 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1380 Label next_test; | |
| 1381 | |
| 1382 // See if return_bci is equal to bci[n]: | |
| 1383 test_mdp_data_at(mdp, | |
| 1384 in_bytes(RetData::bci_offset(row)), | |
| 1385 return_bci, noreg, | |
| 1386 next_test); | |
| 1387 | |
| 1388 // return_bci is equal to bci[n]. Increment the count. | |
| 1389 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
| 1390 | |
| 1391 // The method data pointer needs to be updated to reflect the new target. | |
| 1392 update_mdp_by_offset(mdp, | |
| 1393 in_bytes(RetData::bci_displacement_offset(row))); | |
| 1394 jmp(profile_continue); | |
| 1395 bind(next_test); | |
| 1396 } | |
| 1397 | |
| 1398 update_mdp_for_ret(return_bci); | |
| 1399 | |
| 1400 bind(profile_continue); | |
| 1401 } | |
| 1402 } | |
| 1403 | |
| 1404 | |
| 1405 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
| 1406 if (ProfileInterpreter) { | |
| 1407 Label profile_continue; | |
| 1408 | |
| 1409 // If no method data exists, go to profile_continue. | |
| 1410 test_method_data_pointer(mdp, profile_continue); | |
| 1411 | |
| 1412 // The method data pointer needs to be updated. | |
| 1413 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1414 if (TypeProfileCasts) { | |
| 1415 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1416 } | |
| 1417 update_mdp_by_constant(mdp, mdp_delta); | |
| 1418 | |
| 1419 bind(profile_continue); | |
| 1420 } | |
| 1421 } | |
| 1422 | |
| 1423 | |
| 1424 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
| 1425 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1426 Label profile_continue; | |
| 1427 | |
| 1428 // If no method data exists, go to profile_continue. | |
| 1429 test_method_data_pointer(mdp, profile_continue); | |
| 1430 | |
| 1431 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1432 // Back up the address, since we have already bumped the mdp. | |
| 1433 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1434 | |
| 1435 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1436 increment_mdp_data_at(mdp, count_offset, true); | |
| 1437 | |
| 1438 bind (profile_continue); | |
| 1439 } | |
| 1440 } | |
| 1441 | |
| 1442 | |
| 1443 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) { | |
| 1444 if (ProfileInterpreter) { | |
| 1445 Label profile_continue; | |
| 1446 | |
| 1447 // If no method data exists, go to profile_continue. | |
| 1448 test_method_data_pointer(mdp, profile_continue); | |
| 1449 | |
| 1450 // The method data pointer needs to be updated. | |
| 1451 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1452 if (TypeProfileCasts) { | |
| 1453 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1454 | |
| 1455 // Record the object type. | |
| 1456 record_klass_in_profile(klass, mdp, reg2); | |
| 1457 } | |
| 1458 update_mdp_by_constant(mdp, mdp_delta); | |
| 1459 | |
| 1460 bind(profile_continue); | |
| 1461 } | |
| 1462 } | |
| 1463 | |
| 1464 | |
| 1465 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
| 1466 if (ProfileInterpreter) { | |
| 1467 Label profile_continue; | |
| 1468 | |
| 1469 // If no method data exists, go to profile_continue. | |
| 1470 test_method_data_pointer(mdp, profile_continue); | |
| 1471 | |
| 1472 // Update the default case count | |
| 1473 increment_mdp_data_at(mdp, | |
| 1474 in_bytes(MultiBranchData::default_count_offset())); | |
| 1475 | |
| 1476 // The method data pointer needs to be updated. | |
| 1477 update_mdp_by_offset(mdp, | |
| 1478 in_bytes(MultiBranchData:: | |
| 1479 default_displacement_offset())); | |
| 1480 | |
| 1481 bind(profile_continue); | |
| 1482 } | |
| 1483 } | |
| 1484 | |
| 1485 | |
| 1486 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
| 1487 Register mdp, | |
| 1488 Register reg2) { | |
| 1489 if (ProfileInterpreter) { | |
| 1490 Label profile_continue; | |
| 1491 | |
| 1492 // If no method data exists, go to profile_continue. | |
| 1493 test_method_data_pointer(mdp, profile_continue); | |
| 1494 | |
| 1495 // Build the base (index * per_case_size_in_bytes()) + | |
| 1496 // case_array_offset_in_bytes() | |
| 1497 movl(reg2, in_bytes(MultiBranchData::per_case_size())); | |
| 304 | 1498 imulptr(index, reg2); // XXX l ? |
| 1499 addptr(index, in_bytes(MultiBranchData::case_array_offset())); // XXX l ? | |
| 0 | 1500 |
| 1501 // Update the case count | |
| 1502 increment_mdp_data_at(mdp, | |
| 1503 index, | |
| 1504 in_bytes(MultiBranchData::relative_count_offset())); | |
| 1505 | |
| 1506 // The method data pointer needs to be updated. | |
| 1507 update_mdp_by_offset(mdp, | |
| 1508 index, | |
| 1509 in_bytes(MultiBranchData:: | |
| 1510 relative_displacement_offset())); | |
| 1511 | |
| 1512 bind(profile_continue); | |
| 1513 } | |
| 1514 } | |
| 1515 | |
| 1516 | |
| 304 | 1517 |
| 0 | 1518 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
| 1519 if (state == atos) { | |
| 1520 MacroAssembler::verify_oop(reg); | |
| 1521 } | |
| 1522 } | |
| 1523 | |
| 1524 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 1525 } | |
| 304 | 1526 #endif // !CC_INTERP |
| 0 | 1527 |
| 1528 | |
| 1529 void InterpreterMacroAssembler::notify_method_entry() { | |
| 1530 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1531 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1532 // the code to check if the event should be sent. | |
| 1533 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1534 Label L; | |
| 1535 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset())); | |
| 1536 testl(rdx, rdx); | |
| 1537 jcc(Assembler::zero, L); | |
| 1538 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 1539 InterpreterRuntime::post_method_entry)); | |
| 1540 bind(L); | |
| 1541 } | |
| 1542 | |
| 1543 { | |
| 1544 SkipIfEqual skip(this, &DTraceMethodProbes, false); | |
| 1545 get_method(c_rarg1); | |
| 1546 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), | |
| 1547 r15_thread, c_rarg1); | |
| 1548 } | |
|
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1549 |
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1550 // RedefineClasses() tracing support for obsolete method entry |
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1551 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1552 get_method(c_rarg1); |
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1553 call_VM_leaf( |
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1554 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1555 r15_thread, c_rarg1); |
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1556 } |
| 0 | 1557 } |
| 1558 | |
| 1559 | |
| 1560 void InterpreterMacroAssembler::notify_method_exit( | |
| 1561 TosState state, NotifyMethodExitMode mode) { | |
| 1562 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1563 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1564 // the code to check if the event should be sent. | |
| 1565 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
| 1566 Label L; | |
| 1567 // Note: frame::interpreter_frame_result has a dependency on how the | |
| 1568 // method result is saved across the call to post_method_exit. If this | |
| 1569 // is changed then the interpreter_frame_result implementation will | |
| 1570 // need to be updated too. | |
| 304 | 1571 |
| 1572 // For c++ interpreter the result is always stored at a known location in the frame | |
| 1573 // template interpreter will leave it on the top of the stack. | |
| 1574 NOT_CC_INTERP(push(state);) | |
| 0 | 1575 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset())); |
| 1576 testl(rdx, rdx); | |
| 1577 jcc(Assembler::zero, L); | |
| 1578 call_VM(noreg, | |
| 1579 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
| 1580 bind(L); | |
| 304 | 1581 NOT_CC_INTERP(pop(state)); |
| 0 | 1582 } |
| 1583 | |
| 1584 { | |
| 1585 SkipIfEqual skip(this, &DTraceMethodProbes, false); | |
| 304 | 1586 NOT_CC_INTERP(push(state)); |
| 0 | 1587 get_method(c_rarg1); |
| 1588 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
| 1589 r15_thread, c_rarg1); | |
| 304 | 1590 NOT_CC_INTERP(pop(state)); |
| 0 | 1591 } |
| 1592 } |