annotate src/cpu/x86/vm/interp_masm_x86_64.cpp @ 622:56aae7be60d4

6812678: macro assembler needs delayed binding of a few constants (for 6655638) Summary: minor assembler enhancements preparing for method handles Reviewed-by: kvn
author jrose
date Wed, 04 Mar 2009 09:58:39 -0800
parents 52a431267315
children 2f2f54ed12ce
rev   line source
duke@0 1 /*
xdono@196 2 * Copyright 2003-2008 Sun Microsystems, Inc. All Rights Reserved.
duke@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@0 4 *
duke@0 5 * This code is free software; you can redistribute it and/or modify it
duke@0 6 * under the terms of the GNU General Public License version 2 only, as
duke@0 7 * published by the Free Software Foundation.
duke@0 8 *
duke@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@0 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@0 13 * accompanied this code).
duke@0 14 *
duke@0 15 * You should have received a copy of the GNU General Public License version
duke@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@0 18 *
duke@0 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@0 20 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@0 21 * have any questions.
duke@0 22 *
duke@0 23 */
duke@0 24
duke@0 25 #include "incls/_precompiled.incl"
duke@0 26 #include "incls/_interp_masm_x86_64.cpp.incl"
duke@0 27
duke@0 28
duke@0 29 // Implementation of InterpreterMacroAssembler
duke@0 30
never@304 31 #ifdef CC_INTERP
never@304 32 void InterpreterMacroAssembler::get_method(Register reg) {
coleenp@520 33 movptr(reg, Address(rbp, -((int)sizeof(BytecodeInterpreter) + 2 * wordSize)));
never@304 34 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method)));
never@304 35 }
never@304 36 #endif // CC_INTERP
never@304 37
never@304 38 #ifndef CC_INTERP
never@304 39
duke@0 40 void InterpreterMacroAssembler::call_VM_leaf_base(address entry_point,
duke@0 41 int number_of_arguments) {
duke@0 42 // interpreter specific
duke@0 43 //
duke@0 44 // Note: No need to save/restore bcp & locals (r13 & r14) pointer
duke@0 45 // since these are callee saved registers and no blocking/
duke@0 46 // GC can happen in leaf calls.
ysr@342 47 // Further Note: DO NOT save/restore bcp/locals. If a caller has
ysr@342 48 // already saved them so that it can use esi/edi as temporaries
ysr@342 49 // then a save/restore here will DESTROY the copy the caller
ysr@342 50 // saved! There used to be a save_bcp() that only happened in
ysr@342 51 // the ASSERT path (no restore_bcp). Which caused bizarre failures
ysr@342 52 // when jvm built with ASSERTs.
duke@0 53 #ifdef ASSERT
duke@0 54 {
duke@0 55 Label L;
never@304 56 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
duke@0 57 jcc(Assembler::equal, L);
duke@0 58 stop("InterpreterMacroAssembler::call_VM_leaf_base:"
duke@0 59 " last_sp != NULL");
duke@0 60 bind(L);
duke@0 61 }
duke@0 62 #endif
duke@0 63 // super call
duke@0 64 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments);
duke@0 65 // interpreter specific
ysr@342 66 // Used to ASSERT that r13/r14 were equal to frame's bcp/locals
ysr@342 67 // but since they may not have been saved (and we don't want to
ysr@342 68 // save thme here (see note above) the assert is invalid.
duke@0 69 }
duke@0 70
duke@0 71 void InterpreterMacroAssembler::call_VM_base(Register oop_result,
duke@0 72 Register java_thread,
duke@0 73 Register last_java_sp,
duke@0 74 address entry_point,
duke@0 75 int number_of_arguments,
duke@0 76 bool check_exceptions) {
duke@0 77 // interpreter specific
duke@0 78 //
duke@0 79 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't
duke@0 80 // really make a difference for these runtime calls, since they are
duke@0 81 // slow anyway. Btw., bcp must be saved/restored since it may change
duke@0 82 // due to GC.
duke@0 83 // assert(java_thread == noreg , "not expecting a precomputed java thread");
duke@0 84 save_bcp();
duke@0 85 #ifdef ASSERT
duke@0 86 {
duke@0 87 Label L;
never@304 88 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
duke@0 89 jcc(Assembler::equal, L);
duke@0 90 stop("InterpreterMacroAssembler::call_VM_leaf_base:"
duke@0 91 " last_sp != NULL");
duke@0 92 bind(L);
duke@0 93 }
duke@0 94 #endif /* ASSERT */
duke@0 95 // super call
duke@0 96 MacroAssembler::call_VM_base(oop_result, noreg, last_java_sp,
duke@0 97 entry_point, number_of_arguments,
duke@0 98 check_exceptions);
duke@0 99 // interpreter specific
duke@0 100 restore_bcp();
duke@0 101 restore_locals();
duke@0 102 }
duke@0 103
duke@0 104
duke@0 105 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) {
duke@0 106 if (JvmtiExport::can_pop_frame()) {
duke@0 107 Label L;
duke@0 108 // Initiate popframe handling only if it is not already being
duke@0 109 // processed. If the flag has the popframe_processing bit set, it
duke@0 110 // means that this code is called *during* popframe handling - we
duke@0 111 // don't want to reenter.
duke@0 112 // This method is only called just after the call into the vm in
duke@0 113 // call_VM_base, so the arg registers are available.
duke@0 114 movl(c_rarg0, Address(r15_thread, JavaThread::popframe_condition_offset()));
duke@0 115 testl(c_rarg0, JavaThread::popframe_pending_bit);
duke@0 116 jcc(Assembler::zero, L);
duke@0 117 testl(c_rarg0, JavaThread::popframe_processing_bit);
duke@0 118 jcc(Assembler::notZero, L);
duke@0 119 // Call Interpreter::remove_activation_preserving_args_entry() to get the
duke@0 120 // address of the same-named entrypoint in the generated interpreter code.
duke@0 121 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry));
duke@0 122 jmp(rax);
duke@0 123 bind(L);
duke@0 124 }
duke@0 125 }
duke@0 126
duke@0 127
duke@0 128 void InterpreterMacroAssembler::load_earlyret_value(TosState state) {
never@304 129 movptr(rcx, Address(r15_thread, JavaThread::jvmti_thread_state_offset()));
duke@0 130 const Address tos_addr(rcx, JvmtiThreadState::earlyret_tos_offset());
duke@0 131 const Address oop_addr(rcx, JvmtiThreadState::earlyret_oop_offset());
duke@0 132 const Address val_addr(rcx, JvmtiThreadState::earlyret_value_offset());
duke@0 133 switch (state) {
never@304 134 case atos: movptr(rax, oop_addr);
never@304 135 movptr(oop_addr, (int32_t)NULL_WORD);
duke@0 136 verify_oop(rax, state); break;
never@304 137 case ltos: movptr(rax, val_addr); break;
duke@0 138 case btos: // fall through
duke@0 139 case ctos: // fall through
duke@0 140 case stos: // fall through
duke@0 141 case itos: movl(rax, val_addr); break;
duke@0 142 case ftos: movflt(xmm0, val_addr); break;
duke@0 143 case dtos: movdbl(xmm0, val_addr); break;
duke@0 144 case vtos: /* nothing to do */ break;
duke@0 145 default : ShouldNotReachHere();
duke@0 146 }
duke@0 147 // Clean up tos value in the thread object
duke@0 148 movl(tos_addr, (int) ilgl);
never@304 149 movl(val_addr, (int32_t) NULL_WORD);
duke@0 150 }
duke@0 151
duke@0 152
duke@0 153 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) {
duke@0 154 if (JvmtiExport::can_force_early_return()) {
duke@0 155 Label L;
never@304 156 movptr(c_rarg0, Address(r15_thread, JavaThread::jvmti_thread_state_offset()));
never@304 157 testptr(c_rarg0, c_rarg0);
duke@0 158 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit;
duke@0 159
duke@0 160 // Initiate earlyret handling only if it is not already being processed.
duke@0 161 // If the flag has the earlyret_processing bit set, it means that this code
duke@0 162 // is called *during* earlyret handling - we don't want to reenter.
duke@0 163 movl(c_rarg0, Address(c_rarg0, JvmtiThreadState::earlyret_state_offset()));
duke@0 164 cmpl(c_rarg0, JvmtiThreadState::earlyret_pending);
duke@0 165 jcc(Assembler::notEqual, L);
duke@0 166
duke@0 167 // Call Interpreter::remove_activation_early_entry() to get the address of the
duke@0 168 // same-named entrypoint in the generated interpreter code.
never@304 169 movptr(c_rarg0, Address(r15_thread, JavaThread::jvmti_thread_state_offset()));
duke@0 170 movl(c_rarg0, Address(c_rarg0, JvmtiThreadState::earlyret_tos_offset()));
duke@0 171 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), c_rarg0);
duke@0 172 jmp(rax);
duke@0 173 bind(L);
duke@0 174 }
duke@0 175 }
duke@0 176
duke@0 177
duke@0 178 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(
duke@0 179 Register reg,
duke@0 180 int bcp_offset) {
duke@0 181 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode");
duke@0 182 movl(reg, Address(r13, bcp_offset));
duke@0 183 bswapl(reg);
duke@0 184 shrl(reg, 16);
duke@0 185 }
duke@0 186
duke@0 187
duke@0 188 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache,
duke@0 189 Register index,
duke@0 190 int bcp_offset) {
duke@0 191 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
duke@0 192 assert(cache != index, "must use different registers");
jrose@622 193 load_unsigned_short(index, Address(r13, bcp_offset));
never@304 194 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
duke@0 195 assert(sizeof(ConstantPoolCacheEntry) == 4 * wordSize, "adjust code below");
duke@0 196 // convert from field index to ConstantPoolCacheEntry index
duke@0 197 shll(index, 2);
duke@0 198 }
duke@0 199
duke@0 200
duke@0 201 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache,
duke@0 202 Register tmp,
duke@0 203 int bcp_offset) {
duke@0 204 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
duke@0 205 assert(cache != tmp, "must use different register");
jrose@622 206 load_unsigned_short(tmp, Address(r13, bcp_offset));
duke@0 207 assert(sizeof(ConstantPoolCacheEntry) == 4 * wordSize, "adjust code below");
duke@0 208 // convert from field index to ConstantPoolCacheEntry index
duke@0 209 // and from word offset to byte offset
duke@0 210 shll(tmp, 2 + LogBytesPerWord);
never@304 211 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
duke@0 212 // skip past the header
never@304 213 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset()));
never@304 214 addptr(cache, tmp); // construct pointer to cache entry
duke@0 215 }
duke@0 216
duke@0 217
duke@0 218 // Generate a subtype check: branch to ok_is_subtype if sub_klass is a
duke@0 219 // subtype of super_klass.
duke@0 220 //
duke@0 221 // Args:
duke@0 222 // rax: superklass
duke@0 223 // Rsub_klass: subklass
duke@0 224 //
duke@0 225 // Kills:
duke@0 226 // rcx, rdi
duke@0 227 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass,
duke@0 228 Label& ok_is_subtype) {
duke@0 229 assert(Rsub_klass != rax, "rax holds superklass");
duke@0 230 assert(Rsub_klass != r14, "r14 holds locals");
duke@0 231 assert(Rsub_klass != r13, "r13 holds bcp");
duke@0 232 assert(Rsub_klass != rcx, "rcx holds 2ndary super array length");
duke@0 233 assert(Rsub_klass != rdi, "rdi holds 2ndary super array scan ptr");
duke@0 234
coleenp@178 235 Label not_subtype, not_subtype_pop, loop;
duke@0 236
duke@0 237 // Profile the not-null value's klass.
duke@0 238 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, rdi
duke@0 239
duke@0 240 // Load the super-klass's check offset into rcx
duke@0 241 movl(rcx, Address(rax, sizeof(oopDesc) +
duke@0 242 Klass::super_check_offset_offset_in_bytes()));
duke@0 243 // Load from the sub-klass's super-class display list, or a 1-word
duke@0 244 // cache of the secondary superclass list, or a failing value with a
duke@0 245 // sentinel offset if the super-klass is an interface or
duke@0 246 // exceptionally deep in the Java hierarchy and we have to scan the
duke@0 247 // secondary superclass list the hard way. See if we get an
duke@0 248 // immediate positive hit
never@304 249 cmpptr(rax, Address(Rsub_klass, rcx, Address::times_1));
duke@0 250 jcc(Assembler::equal,ok_is_subtype);
duke@0 251
duke@0 252 // Check for immediate negative hit
duke@0 253 cmpl(rcx, sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes());
duke@0 254 jcc( Assembler::notEqual, not_subtype );
duke@0 255 // Check for self
never@304 256 cmpptr(Rsub_klass, rax);
duke@0 257 jcc(Assembler::equal, ok_is_subtype);
duke@0 258
duke@0 259 // Now do a linear scan of the secondary super-klass chain.
never@304 260 movptr(rdi, Address(Rsub_klass, sizeof(oopDesc) +
never@304 261 Klass::secondary_supers_offset_in_bytes()));
duke@0 262 // rdi holds the objArrayOop of secondary supers.
duke@0 263 // Load the array length
duke@0 264 movl(rcx, Address(rdi, arrayOopDesc::length_offset_in_bytes()));
duke@0 265 // Skip to start of data; also clear Z flag incase rcx is zero
never@304 266 addptr(rdi, arrayOopDesc::base_offset_in_bytes(T_OBJECT));
duke@0 267 // Scan rcx words at [rdi] for occurance of rax
duke@0 268 // Set NZ/Z based on last compare
coleenp@113 269
coleenp@113 270 // this part is kind tricky, as values in supers array could be 32 or 64 bit wide
coleenp@113 271 // and we store values in objArrays always encoded, thus we need to encode value
coleenp@113 272 // before repne
coleenp@113 273 if (UseCompressedOops) {
never@304 274 push(rax);
coleenp@113 275 encode_heap_oop(rax);
coleenp@113 276 repne_scanl();
coleenp@113 277 // Not equal?
coleenp@178 278 jcc(Assembler::notEqual, not_subtype_pop);
coleenp@178 279 // restore heap oop here for movq
never@304 280 pop(rax);
coleenp@113 281 } else {
never@304 282 repne_scan();
coleenp@113 283 jcc(Assembler::notEqual, not_subtype);
coleenp@113 284 }
duke@0 285 // Must be equal but missed in cache. Update cache.
never@304 286 movptr(Address(Rsub_klass, sizeof(oopDesc) +
duke@0 287 Klass::secondary_super_cache_offset_in_bytes()), rax);
duke@0 288 jmp(ok_is_subtype);
duke@0 289
coleenp@178 290 bind(not_subtype_pop);
coleenp@178 291 // restore heap oop here for miss
never@304 292 if (UseCompressedOops) pop(rax);
duke@0 293 bind(not_subtype);
duke@0 294 profile_typecheck_failed(rcx); // blows rcx
duke@0 295 }
duke@0 296
duke@0 297
never@304 298
duke@0 299 // Java Expression Stack
duke@0 300
duke@0 301 #ifdef ASSERT
duke@0 302 // Verifies that the stack tag matches. Must be called before the stack
duke@0 303 // value is popped off the stack.
duke@0 304 void InterpreterMacroAssembler::verify_stack_tag(frame::Tag t) {
duke@0 305 if (TaggedStackInterpreter) {
duke@0 306 frame::Tag tag = t;
duke@0 307 if (t == frame::TagCategory2) {
duke@0 308 tag = frame::TagValue;
duke@0 309 Label hokay;
never@304 310 cmpptr(Address(rsp, 3*wordSize), (int32_t)tag);
duke@0 311 jcc(Assembler::equal, hokay);
duke@0 312 stop("Java Expression stack tag high value is bad");
duke@0 313 bind(hokay);
duke@0 314 }
duke@0 315 Label okay;
never@304 316 cmpptr(Address(rsp, wordSize), (int32_t)tag);
duke@0 317 jcc(Assembler::equal, okay);
duke@0 318 // Also compare if the stack value is zero, then the tag might
duke@0 319 // not have been set coming from deopt.
never@304 320 cmpptr(Address(rsp, 0), 0);
duke@0 321 jcc(Assembler::equal, okay);
duke@0 322 stop("Java Expression stack tag value is bad");
duke@0 323 bind(okay);
duke@0 324 }
duke@0 325 }
duke@0 326 #endif // ASSERT
duke@0 327
duke@0 328 void InterpreterMacroAssembler::pop_ptr(Register r) {
duke@0 329 debug_only(verify_stack_tag(frame::TagReference));
never@304 330 pop(r);
never@304 331 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize);
duke@0 332 }
duke@0 333
duke@0 334 void InterpreterMacroAssembler::pop_ptr(Register r, Register tag) {
never@304 335 pop(r);
never@304 336 if (TaggedStackInterpreter) pop(tag);
duke@0 337 }
duke@0 338
duke@0 339 void InterpreterMacroAssembler::pop_i(Register r) {
never@304 340 // XXX can't use pop currently, upper half non clean
duke@0 341 debug_only(verify_stack_tag(frame::TagValue));
duke@0 342 movl(r, Address(rsp, 0));
never@304 343 addptr(rsp, wordSize);
never@304 344 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize);
duke@0 345 }
duke@0 346
duke@0 347 void InterpreterMacroAssembler::pop_l(Register r) {
duke@0 348 debug_only(verify_stack_tag(frame::TagCategory2));
duke@0 349 movq(r, Address(rsp, 0));
never@304 350 addptr(rsp, 2 * Interpreter::stackElementSize());
duke@0 351 }
duke@0 352
duke@0 353 void InterpreterMacroAssembler::pop_f(XMMRegister r) {
duke@0 354 debug_only(verify_stack_tag(frame::TagValue));
duke@0 355 movflt(r, Address(rsp, 0));
never@304 356 addptr(rsp, wordSize);
never@304 357 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize);
duke@0 358 }
duke@0 359
duke@0 360 void InterpreterMacroAssembler::pop_d(XMMRegister r) {
duke@0 361 debug_only(verify_stack_tag(frame::TagCategory2));
duke@0 362 movdbl(r, Address(rsp, 0));
never@304 363 addptr(rsp, 2 * Interpreter::stackElementSize());
duke@0 364 }
duke@0 365
duke@0 366 void InterpreterMacroAssembler::push_ptr(Register r) {
never@304 367 if (TaggedStackInterpreter) push(frame::TagReference);
never@304 368 push(r);
duke@0 369 }
duke@0 370
duke@0 371 void InterpreterMacroAssembler::push_ptr(Register r, Register tag) {
never@304 372 if (TaggedStackInterpreter) push(tag);
never@304 373 push(r);
duke@0 374 }
duke@0 375
duke@0 376 void InterpreterMacroAssembler::push_i(Register r) {
never@304 377 if (TaggedStackInterpreter) push(frame::TagValue);
never@304 378 push(r);
duke@0 379 }
duke@0 380
duke@0 381 void InterpreterMacroAssembler::push_l(Register r) {
duke@0 382 if (TaggedStackInterpreter) {
never@304 383 push(frame::TagValue);
never@304 384 subptr(rsp, 1 * wordSize);
never@304 385 push(frame::TagValue);
never@304 386 subptr(rsp, 1 * wordSize);
duke@0 387 } else {
never@304 388 subptr(rsp, 2 * wordSize);
duke@0 389 }
duke@0 390 movq(Address(rsp, 0), r);
duke@0 391 }
duke@0 392
duke@0 393 void InterpreterMacroAssembler::push_f(XMMRegister r) {
never@304 394 if (TaggedStackInterpreter) push(frame::TagValue);
never@304 395 subptr(rsp, wordSize);
duke@0 396 movflt(Address(rsp, 0), r);
duke@0 397 }
duke@0 398
duke@0 399 void InterpreterMacroAssembler::push_d(XMMRegister r) {
duke@0 400 if (TaggedStackInterpreter) {
never@304 401 push(frame::TagValue);
never@304 402 subptr(rsp, 1 * wordSize);
never@304 403 push(frame::TagValue);
never@304 404 subptr(rsp, 1 * wordSize);
duke@0 405 } else {
never@304 406 subptr(rsp, 2 * wordSize);
duke@0 407 }
duke@0 408 movdbl(Address(rsp, 0), r);
duke@0 409 }
duke@0 410
duke@0 411 void InterpreterMacroAssembler::pop(TosState state) {
duke@0 412 switch (state) {
duke@0 413 case atos: pop_ptr(); break;
duke@0 414 case btos:
duke@0 415 case ctos:
duke@0 416 case stos:
duke@0 417 case itos: pop_i(); break;
duke@0 418 case ltos: pop_l(); break;
duke@0 419 case ftos: pop_f(); break;
duke@0 420 case dtos: pop_d(); break;
duke@0 421 case vtos: /* nothing to do */ break;
duke@0 422 default: ShouldNotReachHere();
duke@0 423 }
duke@0 424 verify_oop(rax, state);
duke@0 425 }
duke@0 426
duke@0 427 void InterpreterMacroAssembler::push(TosState state) {
duke@0 428 verify_oop(rax, state);
duke@0 429 switch (state) {
duke@0 430 case atos: push_ptr(); break;
duke@0 431 case btos:
duke@0 432 case ctos:
duke@0 433 case stos:
duke@0 434 case itos: push_i(); break;
duke@0 435 case ltos: push_l(); break;
duke@0 436 case ftos: push_f(); break;
duke@0 437 case dtos: push_d(); break;
duke@0 438 case vtos: /* nothing to do */ break;
duke@0 439 default : ShouldNotReachHere();
duke@0 440 }
duke@0 441 }
duke@0 442
duke@0 443
never@304 444
never@304 445
duke@0 446 // Tagged stack helpers for swap and dup
duke@0 447 void InterpreterMacroAssembler::load_ptr_and_tag(int n, Register val,
duke@0 448 Register tag) {
never@304 449 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n)));
duke@0 450 if (TaggedStackInterpreter) {
never@304 451 movptr(tag, Address(rsp, Interpreter::expr_tag_offset_in_bytes(n)));
duke@0 452 }
duke@0 453 }
duke@0 454
duke@0 455 void InterpreterMacroAssembler::store_ptr_and_tag(int n, Register val,
duke@0 456 Register tag) {
never@304 457 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val);
duke@0 458 if (TaggedStackInterpreter) {
never@304 459 movptr(Address(rsp, Interpreter::expr_tag_offset_in_bytes(n)), tag);
duke@0 460 }
duke@0 461 }
duke@0 462
duke@0 463
duke@0 464 // Tagged local support
duke@0 465 void InterpreterMacroAssembler::tag_local(frame::Tag tag, int n) {
duke@0 466 if (TaggedStackInterpreter) {
duke@0 467 if (tag == frame::TagCategory2) {
never@304 468 movptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n+1)),
never@304 469 (int32_t)frame::TagValue);
never@304 470 movptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n)),
never@304 471 (int32_t)frame::TagValue);
duke@0 472 } else {
never@304 473 movptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)tag);
duke@0 474 }
duke@0 475 }
duke@0 476 }
duke@0 477
duke@0 478 void InterpreterMacroAssembler::tag_local(frame::Tag tag, Register idx) {
duke@0 479 if (TaggedStackInterpreter) {
duke@0 480 if (tag == frame::TagCategory2) {
never@304 481 movptr(Address(r14, idx, Address::times_8,
never@304 482 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)frame::TagValue);
never@304 483 movptr(Address(r14, idx, Address::times_8,
never@304 484 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)frame::TagValue);
duke@0 485 } else {
never@304 486 movptr(Address(r14, idx, Address::times_8, Interpreter::local_tag_offset_in_bytes(0)),
never@304 487 (int32_t)tag);
duke@0 488 }
duke@0 489 }
duke@0 490 }
duke@0 491
duke@0 492 void InterpreterMacroAssembler::tag_local(Register tag, Register idx) {
duke@0 493 if (TaggedStackInterpreter) {
duke@0 494 // can only be TagValue or TagReference
never@304 495 movptr(Address(r14, idx, Address::times_8, Interpreter::local_tag_offset_in_bytes(0)), tag);
duke@0 496 }
duke@0 497 }
duke@0 498
duke@0 499
duke@0 500 void InterpreterMacroAssembler::tag_local(Register tag, int n) {
duke@0 501 if (TaggedStackInterpreter) {
duke@0 502 // can only be TagValue or TagReference
never@304 503 movptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n)), tag);
duke@0 504 }
duke@0 505 }
duke@0 506
duke@0 507 #ifdef ASSERT
duke@0 508 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, int n) {
duke@0 509 if (TaggedStackInterpreter) {
duke@0 510 frame::Tag t = tag;
duke@0 511 if (tag == frame::TagCategory2) {
duke@0 512 Label nbl;
duke@0 513 t = frame::TagValue; // change to what is stored in locals
never@304 514 cmpptr(Address(r14, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)t);
duke@0 515 jcc(Assembler::equal, nbl);
duke@0 516 stop("Local tag is bad for long/double");
duke@0 517 bind(nbl);
duke@0 518 }
duke@0 519 Label notBad;
never@304 520 cmpq(Address(r14, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)t);
duke@0 521 jcc(Assembler::equal, notBad);
duke@0 522 // Also compare if the local value is zero, then the tag might
duke@0 523 // not have been set coming from deopt.
never@304 524 cmpptr(Address(r14, Interpreter::local_offset_in_bytes(n)), 0);
duke@0 525 jcc(Assembler::equal, notBad);
duke@0 526 stop("Local tag is bad");
duke@0 527 bind(notBad);
duke@0 528 }
duke@0 529 }
duke@0 530
duke@0 531 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, Register idx) {
duke@0 532 if (TaggedStackInterpreter) {
duke@0 533 frame::Tag t = tag;
duke@0 534 if (tag == frame::TagCategory2) {
duke@0 535 Label nbl;
duke@0 536 t = frame::TagValue; // change to what is stored in locals
never@304 537 cmpptr(Address(r14, idx, Address::times_8, Interpreter::local_tag_offset_in_bytes(1)), (int32_t)t);
duke@0 538 jcc(Assembler::equal, nbl);
duke@0 539 stop("Local tag is bad for long/double");
duke@0 540 bind(nbl);
duke@0 541 }
duke@0 542 Label notBad;
never@304 543 cmpptr(Address(r14, idx, Address::times_8, Interpreter::local_tag_offset_in_bytes(0)), (int32_t)t);
duke@0 544 jcc(Assembler::equal, notBad);
duke@0 545 // Also compare if the local value is zero, then the tag might
duke@0 546 // not have been set coming from deopt.
never@304 547 cmpptr(Address(r14, idx, Address::times_8, Interpreter::local_offset_in_bytes(0)), 0);
duke@0 548 jcc(Assembler::equal, notBad);
duke@0 549 stop("Local tag is bad");
duke@0 550 bind(notBad);
duke@0 551 }
duke@0 552 }
duke@0 553 #endif // ASSERT
duke@0 554
duke@0 555
duke@0 556 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) {
duke@0 557 MacroAssembler::call_VM_leaf_base(entry_point, 0);
duke@0 558 }
duke@0 559
duke@0 560
duke@0 561 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point,
duke@0 562 Register arg_1) {
duke@0 563 if (c_rarg0 != arg_1) {
never@304 564 mov(c_rarg0, arg_1);
duke@0 565 }
duke@0 566 MacroAssembler::call_VM_leaf_base(entry_point, 1);
duke@0 567 }
duke@0 568
duke@0 569
duke@0 570 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point,
duke@0 571 Register arg_1,
duke@0 572 Register arg_2) {
duke@0 573 assert(c_rarg0 != arg_2, "smashed argument");
duke@0 574 assert(c_rarg1 != arg_1, "smashed argument");
duke@0 575 if (c_rarg0 != arg_1) {
never@304 576 mov(c_rarg0, arg_1);
duke@0 577 }
duke@0 578 if (c_rarg1 != arg_2) {
never@304 579 mov(c_rarg1, arg_2);
duke@0 580 }
duke@0 581 MacroAssembler::call_VM_leaf_base(entry_point, 2);
duke@0 582 }
duke@0 583
duke@0 584 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point,
duke@0 585 Register arg_1,
duke@0 586 Register arg_2,
duke@0 587 Register arg_3) {
duke@0 588 assert(c_rarg0 != arg_2, "smashed argument");
duke@0 589 assert(c_rarg0 != arg_3, "smashed argument");
duke@0 590 assert(c_rarg1 != arg_1, "smashed argument");
duke@0 591 assert(c_rarg1 != arg_3, "smashed argument");
duke@0 592 assert(c_rarg2 != arg_1, "smashed argument");
duke@0 593 assert(c_rarg2 != arg_2, "smashed argument");
duke@0 594 if (c_rarg0 != arg_1) {
never@304 595 mov(c_rarg0, arg_1);
duke@0 596 }
duke@0 597 if (c_rarg1 != arg_2) {
never@304 598 mov(c_rarg1, arg_2);
duke@0 599 }
duke@0 600 if (c_rarg2 != arg_3) {
never@304 601 mov(c_rarg2, arg_3);
duke@0 602 }
duke@0 603 MacroAssembler::call_VM_leaf_base(entry_point, 3);
duke@0 604 }
duke@0 605
duke@0 606 // Jump to from_interpreted entry of a call unless single stepping is possible
duke@0 607 // in this thread in which case we must call the i2i entry
duke@0 608 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) {
duke@0 609 // set sender sp
never@304 610 lea(r13, Address(rsp, wordSize));
duke@0 611 // record last_sp
never@304 612 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), r13);
duke@0 613
duke@0 614 if (JvmtiExport::can_post_interpreter_events()) {
duke@0 615 Label run_compiled_code;
duke@0 616 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
duke@0 617 // compiled code in threads for which the event is enabled. Check here for
duke@0 618 // interp_only_mode if these events CAN be enabled.
duke@0 619 get_thread(temp);
duke@0 620 // interp_only is an int, on little endian it is sufficient to test the byte only
duke@0 621 // Is a cmpl faster (ce
duke@0 622 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0);
duke@0 623 jcc(Assembler::zero, run_compiled_code);
duke@0 624 jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
duke@0 625 bind(run_compiled_code);
duke@0 626 }
duke@0 627
duke@0 628 jmp(Address(method, methodOopDesc::from_interpreted_offset()));
duke@0 629
duke@0 630 }
duke@0 631
duke@0 632
duke@0 633 // The following two routines provide a hook so that an implementation
duke@0 634 // can schedule the dispatch in two parts. amd64 does not do this.
duke@0 635 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) {
duke@0 636 // Nothing amd64 specific to be done here
duke@0 637 }
duke@0 638
duke@0 639 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) {
duke@0 640 dispatch_next(state, step);
duke@0 641 }
duke@0 642
duke@0 643 void InterpreterMacroAssembler::dispatch_base(TosState state,
duke@0 644 address* table,
duke@0 645 bool verifyoop) {
duke@0 646 verify_FPU(1, state);
duke@0 647 if (VerifyActivationFrameSize) {
duke@0 648 Label L;
never@304 649 mov(rcx, rbp);
never@304 650 subptr(rcx, rsp);
never@304 651 int32_t min_frame_size =
duke@0 652 (frame::link_offset - frame::interpreter_frame_initial_sp_offset) *
duke@0 653 wordSize;
never@304 654 cmpptr(rcx, (int32_t)min_frame_size);
duke@0 655 jcc(Assembler::greaterEqual, L);
duke@0 656 stop("broken stack frame");
duke@0 657 bind(L);
duke@0 658 }
duke@0 659 if (verifyoop) {
duke@0 660 verify_oop(rax, state);
duke@0 661 }
duke@0 662 lea(rscratch1, ExternalAddress((address)table));
duke@0 663 jmp(Address(rscratch1, rbx, Address::times_8));
duke@0 664 }
duke@0 665
duke@0 666 void InterpreterMacroAssembler::dispatch_only(TosState state) {
duke@0 667 dispatch_base(state, Interpreter::dispatch_table(state));
duke@0 668 }
duke@0 669
duke@0 670 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) {
duke@0 671 dispatch_base(state, Interpreter::normal_table(state));
duke@0 672 }
duke@0 673
duke@0 674 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) {
duke@0 675 dispatch_base(state, Interpreter::normal_table(state), false);
duke@0 676 }
duke@0 677
duke@0 678
duke@0 679 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) {
duke@0 680 // load next bytecode (load before advancing r13 to prevent AGI)
duke@0 681 load_unsigned_byte(rbx, Address(r13, step));
duke@0 682 // advance r13
never@304 683 increment(r13, step);
duke@0 684 dispatch_base(state, Interpreter::dispatch_table(state));
duke@0 685 }
duke@0 686
duke@0 687 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) {
duke@0 688 // load current bytecode
duke@0 689 load_unsigned_byte(rbx, Address(r13, 0));
duke@0 690 dispatch_base(state, table);
duke@0 691 }
duke@0 692
duke@0 693 // remove activation
duke@0 694 //
duke@0 695 // Unlock the receiver if this is a synchronized method.
duke@0 696 // Unlock any Java monitors from syncronized blocks.
duke@0 697 // Remove the activation from the stack.
duke@0 698 //
duke@0 699 // If there are locked Java monitors
duke@0 700 // If throw_monitor_exception
duke@0 701 // throws IllegalMonitorStateException
duke@0 702 // Else if install_monitor_exception
duke@0 703 // installs IllegalMonitorStateException
duke@0 704 // Else
duke@0 705 // no error processing
duke@0 706 void InterpreterMacroAssembler::remove_activation(
duke@0 707 TosState state,
duke@0 708 Register ret_addr,
duke@0 709 bool throw_monitor_exception,
duke@0 710 bool install_monitor_exception,
duke@0 711 bool notify_jvmdi) {
duke@0 712 // Note: Registers rdx xmm0 may be in use for the
duke@0 713 // result check if synchronized method
duke@0 714 Label unlocked, unlock, no_unlock;
duke@0 715
duke@0 716 // get the value of _do_not_unlock_if_synchronized into rdx
duke@0 717 const Address do_not_unlock_if_synchronized(r15_thread,
duke@0 718 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
duke@0 719 movbool(rdx, do_not_unlock_if_synchronized);
duke@0 720 movbool(do_not_unlock_if_synchronized, false); // reset the flag
duke@0 721
duke@0 722 // get method access flags
never@304 723 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize));
duke@0 724 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset()));
duke@0 725 testl(rcx, JVM_ACC_SYNCHRONIZED);
duke@0 726 jcc(Assembler::zero, unlocked);
duke@0 727
duke@0 728 // Don't unlock anything if the _do_not_unlock_if_synchronized flag
duke@0 729 // is set.
duke@0 730 testbool(rdx);
duke@0 731 jcc(Assembler::notZero, no_unlock);
duke@0 732
duke@0 733 // unlock monitor
duke@0 734 push(state); // save result
duke@0 735
duke@0 736 // BasicObjectLock will be first in list, since this is a
duke@0 737 // synchronized method. However, need to check that the object has
duke@0 738 // not been unlocked by an explicit monitorexit bytecode.
duke@0 739 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset *
duke@0 740 wordSize - (int) sizeof(BasicObjectLock));
duke@0 741 // We use c_rarg1 so that if we go slow path it will be the correct
duke@0 742 // register for unlock_object to pass to VM directly
never@304 743 lea(c_rarg1, monitor); // address of first monitor
duke@0 744
never@304 745 movptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()));
never@304 746 testptr(rax, rax);
duke@0 747 jcc(Assembler::notZero, unlock);
duke@0 748
duke@0 749 pop(state);
duke@0 750 if (throw_monitor_exception) {
duke@0 751 // Entry already unlocked, need to throw exception
duke@0 752 call_VM(noreg, CAST_FROM_FN_PTR(address,
duke@0 753 InterpreterRuntime::throw_illegal_monitor_state_exception));
duke@0 754 should_not_reach_here();
duke@0 755 } else {
duke@0 756 // Monitor already unlocked during a stack unroll. If requested,
duke@0 757 // install an illegal_monitor_state_exception. Continue with
duke@0 758 // stack unrolling.
duke@0 759 if (install_monitor_exception) {
duke@0 760 call_VM(noreg, CAST_FROM_FN_PTR(address,
duke@0 761 InterpreterRuntime::new_illegal_monitor_state_exception));
duke@0 762 }
duke@0 763 jmp(unlocked);
duke@0 764 }
duke@0 765
duke@0 766 bind(unlock);
duke@0 767 unlock_object(c_rarg1);
duke@0 768 pop(state);
duke@0 769
duke@0 770 // Check that for block-structured locking (i.e., that all locked
duke@0 771 // objects has been unlocked)
duke@0 772 bind(unlocked);
duke@0 773
duke@0 774 // rax: Might contain return value
duke@0 775
duke@0 776 // Check that all monitors are unlocked
duke@0 777 {
duke@0 778 Label loop, exception, entry, restart;
duke@0 779 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
duke@0 780 const Address monitor_block_top(
duke@0 781 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
duke@0 782 const Address monitor_block_bot(
duke@0 783 rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
duke@0 784
duke@0 785 bind(restart);
duke@0 786 // We use c_rarg1 so that if we go slow path it will be the correct
duke@0 787 // register for unlock_object to pass to VM directly
never@304 788 movptr(c_rarg1, monitor_block_top); // points to current entry, starting
duke@0 789 // with top-most entry
never@304 790 lea(rbx, monitor_block_bot); // points to word before bottom of
duke@0 791 // monitor block
duke@0 792 jmp(entry);
duke@0 793
duke@0 794 // Entry already locked, need to throw exception
duke@0 795 bind(exception);
duke@0 796
duke@0 797 if (throw_monitor_exception) {
duke@0 798 // Throw exception
duke@0 799 MacroAssembler::call_VM(noreg,
duke@0 800 CAST_FROM_FN_PTR(address, InterpreterRuntime::
duke@0 801 throw_illegal_monitor_state_exception));
duke@0 802 should_not_reach_here();
duke@0 803 } else {
duke@0 804 // Stack unrolling. Unlock object and install illegal_monitor_exception.
duke@0 805 // Unlock does not block, so don't have to worry about the frame.
duke@0 806 // We don't have to preserve c_rarg1 since we are going to throw an exception.
duke@0 807
duke@0 808 push(state);
duke@0 809 unlock_object(c_rarg1);
duke@0 810 pop(state);
duke@0 811
duke@0 812 if (install_monitor_exception) {
duke@0 813 call_VM(noreg, CAST_FROM_FN_PTR(address,
duke@0 814 InterpreterRuntime::
duke@0 815 new_illegal_monitor_state_exception));
duke@0 816 }
duke@0 817
duke@0 818 jmp(restart);
duke@0 819 }
duke@0 820
duke@0 821 bind(loop);
duke@0 822 // check if current entry is used
never@304 823 cmpptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL);
duke@0 824 jcc(Assembler::notEqual, exception);
duke@0 825
never@304 826 addptr(c_rarg1, entry_size); // otherwise advance to next entry
duke@0 827 bind(entry);
never@304 828 cmpptr(c_rarg1, rbx); // check if bottom reached
duke@0 829 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
duke@0 830 }
duke@0 831
duke@0 832 bind(no_unlock);
duke@0 833
duke@0 834 // jvmti support
duke@0 835 if (notify_jvmdi) {
duke@0 836 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA
duke@0 837 } else {
duke@0 838 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA
duke@0 839 }
duke@0 840
duke@0 841 // remove activation
duke@0 842 // get sender sp
never@304 843 movptr(rbx,
never@304 844 Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize));
duke@0 845 leave(); // remove frame anchor
never@304 846 pop(ret_addr); // get return address
never@304 847 mov(rsp, rbx); // set sp to sender sp
duke@0 848 }
duke@0 849
never@304 850 #endif // C_INTERP
never@304 851
duke@0 852 // Lock object
duke@0 853 //
duke@0 854 // Args:
duke@0 855 // c_rarg1: BasicObjectLock to be used for locking
duke@0 856 //
duke@0 857 // Kills:
duke@0 858 // rax
duke@0 859 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, .. (param regs)
duke@0 860 // rscratch1, rscratch2 (scratch regs)
duke@0 861 void InterpreterMacroAssembler::lock_object(Register lock_reg) {
duke@0 862 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be c_rarg1");
duke@0 863
duke@0 864 if (UseHeavyMonitors) {
duke@0 865 call_VM(noreg,
duke@0 866 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter),
duke@0 867 lock_reg);
duke@0 868 } else {
duke@0 869 Label done;
duke@0 870
duke@0 871 const Register swap_reg = rax; // Must use rax for cmpxchg instruction
duke@0 872 const Register obj_reg = c_rarg3; // Will contain the oop
duke@0 873
duke@0 874 const int obj_offset = BasicObjectLock::obj_offset_in_bytes();
duke@0 875 const int lock_offset = BasicObjectLock::lock_offset_in_bytes ();
duke@0 876 const int mark_offset = lock_offset +
duke@0 877 BasicLock::displaced_header_offset_in_bytes();
duke@0 878
duke@0 879 Label slow_case;
duke@0 880
duke@0 881 // Load object pointer into obj_reg %c_rarg3
never@304 882 movptr(obj_reg, Address(lock_reg, obj_offset));
duke@0 883
duke@0 884 if (UseBiasedLocking) {
duke@0 885 biased_locking_enter(lock_reg, obj_reg, swap_reg, rscratch1, false, done, &slow_case);
duke@0 886 }
duke@0 887
duke@0 888 // Load immediate 1 into swap_reg %rax
duke@0 889 movl(swap_reg, 1);
duke@0 890
duke@0 891 // Load (object->mark() | 1) into swap_reg %rax
never@304 892 orptr(swap_reg, Address(obj_reg, 0));
duke@0 893
duke@0 894 // Save (object->mark() | 1) into BasicLock's displaced header
never@304 895 movptr(Address(lock_reg, mark_offset), swap_reg);
duke@0 896
duke@0 897 assert(lock_offset == 0,
duke@0 898 "displached header must be first word in BasicObjectLock");
duke@0 899
duke@0 900 if (os::is_MP()) lock();
never@304 901 cmpxchgptr(lock_reg, Address(obj_reg, 0));
duke@0 902 if (PrintBiasedLockingStatistics) {
duke@0 903 cond_inc32(Assembler::zero,
duke@0 904 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
duke@0 905 }
duke@0 906 jcc(Assembler::zero, done);
duke@0 907
duke@0 908 // Test if the oopMark is an obvious stack pointer, i.e.,
duke@0 909 // 1) (mark & 7) == 0, and
duke@0 910 // 2) rsp <= mark < mark + os::pagesize()
duke@0 911 //
duke@0 912 // These 3 tests can be done by evaluating the following
duke@0 913 // expression: ((mark - rsp) & (7 - os::vm_page_size())),
duke@0 914 // assuming both stack pointer and pagesize have their
duke@0 915 // least significant 3 bits clear.
duke@0 916 // NOTE: the oopMark is in swap_reg %rax as the result of cmpxchg
never@304 917 subptr(swap_reg, rsp);
never@304 918 andptr(swap_reg, 7 - os::vm_page_size());
duke@0 919
duke@0 920 // Save the test result, for recursive case, the result is zero
never@304 921 movptr(Address(lock_reg, mark_offset), swap_reg);
duke@0 922
duke@0 923 if (PrintBiasedLockingStatistics) {
duke@0 924 cond_inc32(Assembler::zero,
duke@0 925 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
duke@0 926 }
duke@0 927 jcc(Assembler::zero, done);
duke@0 928
duke@0 929 bind(slow_case);
duke@0 930
duke@0 931 // Call the runtime routine for slow case
duke@0 932 call_VM(noreg,
duke@0 933 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter),
duke@0 934 lock_reg);
duke@0 935
duke@0 936 bind(done);
duke@0 937 }
duke@0 938 }
duke@0 939
duke@0 940
duke@0 941 // Unlocks an object. Used in monitorexit bytecode and
duke@0 942 // remove_activation. Throws an IllegalMonitorException if object is
duke@0 943 // not locked by current thread.
duke@0 944 //
duke@0 945 // Args:
duke@0 946 // c_rarg1: BasicObjectLock for lock
duke@0 947 //
duke@0 948 // Kills:
duke@0 949 // rax
duke@0 950 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ... (param regs)
duke@0 951 // rscratch1, rscratch2 (scratch regs)
duke@0 952 void InterpreterMacroAssembler::unlock_object(Register lock_reg) {
duke@0 953 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be rarg1");
duke@0 954
duke@0 955 if (UseHeavyMonitors) {
duke@0 956 call_VM(noreg,
duke@0 957 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit),
duke@0 958 lock_reg);
duke@0 959 } else {
duke@0 960 Label done;
duke@0 961
duke@0 962 const Register swap_reg = rax; // Must use rax for cmpxchg instruction
duke@0 963 const Register header_reg = c_rarg2; // Will contain the old oopMark
duke@0 964 const Register obj_reg = c_rarg3; // Will contain the oop
duke@0 965
duke@0 966 save_bcp(); // Save in case of exception
duke@0 967
duke@0 968 // Convert from BasicObjectLock structure to object and BasicLock
duke@0 969 // structure Store the BasicLock address into %rax
never@304 970 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes()));
duke@0 971
duke@0 972 // Load oop into obj_reg(%c_rarg3)
never@304 973 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()));
duke@0 974
duke@0 975 // Free entry
never@304 976 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD);
duke@0 977
duke@0 978 if (UseBiasedLocking) {
duke@0 979 biased_locking_exit(obj_reg, header_reg, done);
duke@0 980 }
duke@0 981
duke@0 982 // Load the old header from BasicLock structure
never@304 983 movptr(header_reg, Address(swap_reg,
never@304 984 BasicLock::displaced_header_offset_in_bytes()));
duke@0 985
duke@0 986 // Test for recursion
never@304 987 testptr(header_reg, header_reg);
duke@0 988
duke@0 989 // zero for recursive case
duke@0 990 jcc(Assembler::zero, done);
duke@0 991
duke@0 992 // Atomic swap back the old header
duke@0 993 if (os::is_MP()) lock();
never@304 994 cmpxchgptr(header_reg, Address(obj_reg, 0));
duke@0 995
duke@0 996 // zero for recursive case
duke@0 997 jcc(Assembler::zero, done);
duke@0 998
duke@0 999 // Call the runtime routine for slow case.
never@304 1000 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()),
duke@0 1001 obj_reg); // restore obj
duke@0 1002 call_VM(noreg,
duke@0 1003 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit),
duke@0 1004 lock_reg);
duke@0 1005
duke@0 1006 bind(done);
duke@0 1007
duke@0 1008 restore_bcp();
duke@0 1009 }
duke@0 1010 }
duke@0 1011
never@304 1012 #ifndef CC_INTERP
duke@0 1013
duke@0 1014 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp,
duke@0 1015 Label& zero_continue) {
duke@0 1016 assert(ProfileInterpreter, "must be profiling interpreter");
never@304 1017 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize));
never@304 1018 testptr(mdp, mdp);
duke@0 1019 jcc(Assembler::zero, zero_continue);
duke@0 1020 }
duke@0 1021
duke@0 1022
duke@0 1023 // Set the method data pointer for the current bcp.
duke@0 1024 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() {
duke@0 1025 assert(ProfileInterpreter, "must be profiling interpreter");
duke@0 1026 Label zero_continue;
never@304 1027 push(rax);
never@304 1028 push(rbx);
duke@0 1029
duke@0 1030 get_method(rbx);
duke@0 1031 // Test MDO to avoid the call if it is NULL.
never@304 1032 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
never@304 1033 testptr(rax, rax);
duke@0 1034 jcc(Assembler::zero, zero_continue);
duke@0 1035
duke@0 1036 // rbx: method
duke@0 1037 // r13: bcp
duke@0 1038 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, r13);
duke@0 1039 // rax: mdi
duke@0 1040
never@304 1041 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
never@304 1042 testptr(rbx, rbx);
duke@0 1043 jcc(Assembler::zero, zero_continue);
never@304 1044 addptr(rbx, in_bytes(methodDataOopDesc::data_offset()));
never@304 1045 addptr(rbx, rax);
never@304 1046 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx);
duke@0 1047
duke@0 1048 bind(zero_continue);
never@304 1049 pop(rbx);
never@304 1050 pop(rax);
duke@0 1051 }
duke@0 1052
duke@0 1053 void InterpreterMacroAssembler::verify_method_data_pointer() {
duke@0 1054 assert(ProfileInterpreter, "must be profiling interpreter");
duke@0 1055 #ifdef ASSERT
duke@0 1056 Label verify_continue;
never@304 1057 push(rax);
never@304 1058 push(rbx);
never@304 1059 push(c_rarg3);
never@304 1060 push(c_rarg2);
duke@0 1061 test_method_data_pointer(c_rarg3, verify_continue); // If mdp is zero, continue
duke@0 1062 get_method(rbx);
duke@0 1063
duke@0 1064 // If the mdp is valid, it will point to a DataLayout header which is
duke@0 1065 // consistent with the bcp. The converse is highly probable also.
jrose@622 1066 load_unsigned_short(c_rarg2,
jrose@622 1067 Address(c_rarg3, in_bytes(DataLayout::bci_offset())));
never@304 1068 addptr(c_rarg2, Address(rbx, methodOopDesc::const_offset()));
never@304 1069 lea(c_rarg2, Address(c_rarg2, constMethodOopDesc::codes_offset()));
never@304 1070 cmpptr(c_rarg2, r13);
duke@0 1071 jcc(Assembler::equal, verify_continue);
duke@0 1072 // rbx: method
duke@0 1073 // r13: bcp
duke@0 1074 // c_rarg3: mdp
duke@0 1075 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp),
duke@0 1076 rbx, r13, c_rarg3);
duke@0 1077 bind(verify_continue);
never@304 1078 pop(c_rarg2);
never@304 1079 pop(c_rarg3);
never@304 1080 pop(rbx);
never@304 1081 pop(rax);
duke@0 1082 #endif // ASSERT
duke@0 1083 }
duke@0 1084
duke@0 1085
duke@0 1086 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in,
duke@0 1087 int constant,
duke@0 1088 Register value) {
duke@0 1089 assert(ProfileInterpreter, "must be profiling interpreter");
duke@0 1090 Address data(mdp_in, constant);
never@304 1091 movptr(data, value);
duke@0 1092 }
duke@0 1093
duke@0 1094
duke@0 1095 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
duke@0 1096 int constant,
duke@0 1097 bool decrement) {
duke@0 1098 // Counter address
duke@0 1099 Address data(mdp_in, constant);
duke@0 1100
duke@0 1101 increment_mdp_data_at(data, decrement);
duke@0 1102 }
duke@0 1103
duke@0 1104 void InterpreterMacroAssembler::increment_mdp_data_at(Address data,
duke@0 1105 bool decrement) {
duke@0 1106 assert(ProfileInterpreter, "must be profiling interpreter");
never@304 1107 // %%% this does 64bit counters at best it is wasting space
never@304 1108 // at worst it is a rare bug when counters overflow
duke@0 1109
duke@0 1110 if (decrement) {
duke@0 1111 // Decrement the register. Set condition codes.
never@304 1112 addptr(data, (int32_t) -DataLayout::counter_increment);
duke@0 1113 // If the decrement causes the counter to overflow, stay negative
duke@0 1114 Label L;
duke@0 1115 jcc(Assembler::negative, L);
never@304 1116 addptr(data, (int32_t) DataLayout::counter_increment);
duke@0 1117 bind(L);
duke@0 1118 } else {
duke@0 1119 assert(DataLayout::counter_increment == 1,
duke@0 1120 "flow-free idiom only works with 1");
duke@0 1121 // Increment the register. Set carry flag.
never@304 1122 addptr(data, DataLayout::counter_increment);
duke@0 1123 // If the increment causes the counter to overflow, pull back by 1.
never@304 1124 sbbptr(data, (int32_t)0);
duke@0 1125 }
duke@0 1126 }
duke@0 1127
duke@0 1128
duke@0 1129 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
duke@0 1130 Register reg,
duke@0 1131 int constant,
duke@0 1132 bool decrement) {
duke@0 1133 Address data(mdp_in, reg, Address::times_1, constant);
duke@0 1134
duke@0 1135 increment_mdp_data_at(data, decrement);
duke@0 1136 }
duke@0 1137
duke@0 1138 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in,
duke@0 1139 int flag_byte_constant) {
duke@0 1140 assert(ProfileInterpreter, "must be profiling interpreter");
duke@0 1141 int header_offset = in_bytes(DataLayout::header_offset());
duke@0 1142 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant);
duke@0 1143 // Set the flag
duke@0 1144 orl(Address(mdp_in, header_offset), header_bits);
duke@0 1145 }
duke@0 1146
duke@0 1147
duke@0 1148
duke@0 1149 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in,
duke@0 1150 int offset,
duke@0 1151 Register value,
duke@0 1152 Register test_value_out,
duke@0 1153 Label& not_equal_continue) {
duke@0 1154 assert(ProfileInterpreter, "must be profiling interpreter");
duke@0 1155 if (test_value_out == noreg) {
never@304 1156 cmpptr(value, Address(mdp_in, offset));
duke@0 1157 } else {
duke@0 1158 // Put the test value into a register, so caller can use it:
never@304 1159 movptr(test_value_out, Address(mdp_in, offset));
never@304 1160 cmpptr(test_value_out, value);
duke@0 1161 }
duke@0 1162 jcc(Assembler::notEqual, not_equal_continue);
duke@0 1163 }
duke@0 1164
duke@0 1165
duke@0 1166 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in,
duke@0 1167 int offset_of_disp) {
duke@0 1168 assert(ProfileInterpreter, "must be profiling interpreter");
duke@0 1169 Address disp_address(mdp_in, offset_of_disp);
never@304 1170 addptr(mdp_in, disp_address);
never@304 1171 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
duke@0 1172 }
duke@0 1173
duke@0 1174
duke@0 1175 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in,
duke@0 1176 Register reg,
duke@0 1177 int offset_of_disp) {
duke@0 1178 assert(ProfileInterpreter, "must be profiling interpreter");
duke@0 1179 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp);
never@304 1180 addptr(mdp_in, disp_address);
never@304 1181 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
duke@0 1182 }
duke@0 1183
duke@0 1184
duke@0 1185 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in,
duke@0 1186 int constant) {
duke@0 1187 assert(ProfileInterpreter, "must be profiling interpreter");
never@304 1188 addptr(mdp_in, constant);
never@304 1189 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
duke@0 1190 }
duke@0 1191
duke@0 1192
duke@0 1193 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) {
duke@0 1194 assert(ProfileInterpreter, "must be profiling interpreter");
never@304 1195 push(return_bci); // save/restore across call_VM
duke@0 1196 call_VM(noreg,
duke@0 1197 CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret),
duke@0 1198 return_bci);
never@304 1199 pop(return_bci);
duke@0 1200 }
duke@0 1201
duke@0 1202
duke@0 1203 void InterpreterMacroAssembler::profile_taken_branch(Register mdp,
duke@0 1204 Register bumped_count) {
duke@0 1205 if (ProfileInterpreter) {
duke@0 1206 Label profile_continue;
duke@0 1207
duke@0 1208 // If no method data exists, go to profile_continue.
duke@0 1209 // Otherwise, assign to mdp
duke@0 1210 test_method_data_pointer(mdp, profile_continue);
duke@0 1211
duke@0 1212 // We are taking a branch. Increment the taken count.
duke@0 1213 // We inline increment_mdp_data_at to return bumped_count in a register
duke@0 1214 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset()));
duke@0 1215 Address data(mdp, in_bytes(JumpData::taken_offset()));
never@304 1216 movptr(bumped_count, data);
duke@0 1217 assert(DataLayout::counter_increment == 1,
duke@0 1218 "flow-free idiom only works with 1");
never@304 1219 addptr(bumped_count, DataLayout::counter_increment);
never@304 1220 sbbptr(bumped_count, 0);
never@304 1221 movptr(data, bumped_count); // Store back out
duke@0 1222
duke@0 1223 // The method data pointer needs to be updated to reflect the new target.
duke@0 1224 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset()));
duke@0 1225 bind(profile_continue);
duke@0 1226 }
duke@0 1227 }
duke@0 1228
duke@0 1229
duke@0 1230 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) {
duke@0 1231 if (ProfileInterpreter) {
duke@0 1232 Label profile_continue;
duke@0 1233
duke@0 1234 // If no method data exists, go to profile_continue.
duke@0 1235 test_method_data_pointer(mdp, profile_continue);
duke@0 1236
duke@0 1237 // We are taking a branch. Increment the not taken count.
duke@0 1238 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset()));
duke@0 1239
duke@0 1240 // The method data pointer needs to be updated to correspond to
duke@0 1241 // the next bytecode
duke@0 1242 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size()));
duke@0 1243 bind(profile_continue);
duke@0 1244 }
duke@0 1245 }
duke@0 1246
duke@0 1247
duke@0 1248 void InterpreterMacroAssembler::profile_call(Register mdp) {
duke@0 1249 if (ProfileInterpreter) {
duke@0 1250 Label profile_continue;
duke@0 1251
duke@0 1252 // If no method data exists, go to profile_continue.
duke@0 1253 test_method_data_pointer(mdp, profile_continue);
duke@0 1254
duke@0 1255 // We are making a call. Increment the count.
duke@0 1256 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
duke@0 1257
duke@0 1258 // The method data pointer needs to be updated to reflect the new target.
duke@0 1259 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size()));
duke@0 1260 bind(profile_continue);
duke@0 1261 }
duke@0 1262 }
duke@0 1263
duke@0 1264
duke@0 1265 void InterpreterMacroAssembler::profile_final_call(Register mdp) {
duke@0 1266 if (ProfileInterpreter) {
duke@0 1267 Label profile_continue;
duke@0 1268
duke@0 1269 // If no method data exists, go to profile_continue.
duke@0 1270 test_method_data_pointer(mdp, profile_continue);
duke@0 1271
duke@0 1272 // We are making a call. Increment the count.
duke@0 1273 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
duke@0 1274
duke@0 1275 // The method data pointer needs to be updated to reflect the new target.
duke@0 1276 update_mdp_by_constant(mdp,
duke@0 1277 in_bytes(VirtualCallData::
duke@0 1278 virtual_call_data_size()));
duke@0 1279 bind(profile_continue);
duke@0 1280 }
duke@0 1281 }
duke@0 1282
duke@0 1283
duke@0 1284 void InterpreterMacroAssembler::profile_virtual_call(Register receiver,
duke@0 1285 Register mdp,
duke@0 1286 Register reg2) {
duke@0 1287 if (ProfileInterpreter) {
duke@0 1288 Label profile_continue;
duke@0 1289
duke@0 1290 // If no method data exists, go to profile_continue.
duke@0 1291 test_method_data_pointer(mdp, profile_continue);
duke@0 1292
duke@0 1293 // We are making a call. Increment the count.
duke@0 1294 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
duke@0 1295
duke@0 1296 // Record the receiver type.
duke@0 1297 record_klass_in_profile(receiver, mdp, reg2);
duke@0 1298
duke@0 1299 // The method data pointer needs to be updated to reflect the new target.
duke@0 1300 update_mdp_by_constant(mdp,
duke@0 1301 in_bytes(VirtualCallData::
duke@0 1302 virtual_call_data_size()));
duke@0 1303 bind(profile_continue);
duke@0 1304 }
duke@0 1305 }
duke@0 1306
duke@0 1307 // This routine creates a state machine for updating the multi-row
duke@0 1308 // type profile at a virtual call site (or other type-sensitive bytecode).
duke@0 1309 // The machine visits each row (of receiver/count) until the receiver type
duke@0 1310 // is found, or until it runs out of rows. At the same time, it remembers
duke@0 1311 // the location of the first empty row. (An empty row records null for its
duke@0 1312 // receiver, and can be allocated for a newly-observed receiver type.)
duke@0 1313 // Because there are two degrees of freedom in the state, a simple linear
duke@0 1314 // search will not work; it must be a decision tree. Hence this helper
duke@0 1315 // function is recursive, to generate the required tree structured code.
duke@0 1316 // It's the interpreter, so we are trading off code space for speed.
duke@0 1317 // See below for example code.
duke@0 1318 void InterpreterMacroAssembler::record_klass_in_profile_helper(
duke@0 1319 Register receiver, Register mdp,
duke@0 1320 Register reg2,
duke@0 1321 int start_row, Label& done) {
duke@0 1322 int last_row = VirtualCallData::row_limit() - 1;
duke@0 1323 assert(start_row <= last_row, "must be work left to do");
duke@0 1324 // Test this row for both the receiver and for null.
duke@0 1325 // Take any of three different outcomes:
duke@0 1326 // 1. found receiver => increment count and goto done
duke@0 1327 // 2. found null => keep looking for case 1, maybe allocate this cell
duke@0 1328 // 3. found something else => keep looking for cases 1 and 2
duke@0 1329 // Case 3 is handled by a recursive call.
duke@0 1330 for (int row = start_row; row <= last_row; row++) {
duke@0 1331 Label next_test;
duke@0 1332 bool test_for_null_also = (row == start_row);
duke@0 1333
duke@0 1334 // See if the receiver is receiver[n].
duke@0 1335 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row));
duke@0 1336 test_mdp_data_at(mdp, recvr_offset, receiver,
duke@0 1337 (test_for_null_also ? reg2 : noreg),
duke@0 1338 next_test);
duke@0 1339 // (Reg2 now contains the receiver from the CallData.)
duke@0 1340
duke@0 1341 // The receiver is receiver[n]. Increment count[n].
duke@0 1342 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row));
duke@0 1343 increment_mdp_data_at(mdp, count_offset);
duke@0 1344 jmp(done);
duke@0 1345 bind(next_test);
duke@0 1346
duke@0 1347 if (test_for_null_also) {
duke@0 1348 // Failed the equality check on receiver[n]... Test for null.
never@304 1349 testptr(reg2, reg2);
duke@0 1350 if (start_row == last_row) {
duke@0 1351 // The only thing left to do is handle the null case.
duke@0 1352 jcc(Assembler::notZero, done);
duke@0 1353 break;
duke@0 1354 }
duke@0 1355 // Since null is rare, make it be the branch-taken case.
duke@0 1356 Label found_null;
duke@0 1357 jcc(Assembler::zero, found_null);
duke@0 1358
duke@0 1359 // Put all the "Case 3" tests here.
duke@0 1360 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done);
duke@0 1361
duke@0 1362 // Found a null. Keep searching for a matching receiver,
duke@0 1363 // but remember that this is an empty (unused) slot.
duke@0 1364 bind(found_null);
duke@0 1365 }
duke@0 1366 }
duke@0 1367
duke@0 1368 // In the fall-through case, we found no matching receiver, but we
duke@0 1369 // observed the receiver[start_row] is NULL.
duke@0 1370
duke@0 1371 // Fill in the receiver field and increment the count.
duke@0 1372 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row));
duke@0 1373 set_mdp_data_at(mdp, recvr_offset, receiver);
duke@0 1374 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row));
duke@0 1375 movl(reg2, DataLayout::counter_increment);
duke@0 1376 set_mdp_data_at(mdp, count_offset, reg2);
duke@0 1377 jmp(done);
duke@0 1378 }
duke@0 1379
duke@0 1380 // Example state machine code for three profile rows:
duke@0 1381 // // main copy of decision tree, rooted at row[1]
duke@0 1382 // if (row[0].rec == rec) { row[0].incr(); goto done; }
duke@0 1383 // if (row[0].rec != NULL) {
duke@0 1384 // // inner copy of decision tree, rooted at row[1]
duke@0 1385 // if (row[1].rec == rec) { row[1].incr(); goto done; }
duke@0 1386 // if (row[1].rec != NULL) {
duke@0 1387 // // degenerate decision tree, rooted at row[2]
duke@0 1388 // if (row[2].rec == rec) { row[2].incr(); goto done; }
duke@0 1389 // if (row[2].rec != NULL) { goto done; } // overflow
duke@0 1390 // row[2].init(rec); goto done;
duke@0 1391 // } else {
duke@0 1392 // // remember row[1] is empty
duke@0 1393 // if (row[2].rec == rec) { row[2].incr(); goto done; }
duke@0 1394 // row[1].init(rec); goto done;
duke@0 1395 // }
duke@0 1396 // } else {
duke@0 1397 // // remember row[0] is empty
duke@0 1398 // if (row[1].rec == rec) { row[1].incr(); goto done; }
duke@0 1399 // if (row[2].rec == rec) { row[2].incr(); goto done; }
duke@0 1400 // row[0].init(rec); goto done;
duke@0 1401 // }
duke@0 1402
duke@0 1403 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver,
duke@0 1404 Register mdp,
duke@0 1405 Register reg2) {
duke@0 1406 assert(ProfileInterpreter, "must be profiling");
duke@0 1407 Label done;
duke@0 1408
duke@0 1409 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done);
duke@0 1410
duke@0 1411 bind (done);
duke@0 1412 }
duke@0 1413
duke@0 1414 void InterpreterMacroAssembler::profile_ret(Register return_bci,
duke@0 1415 Register mdp) {
duke@0 1416 if (ProfileInterpreter) {
duke@0 1417 Label profile_continue;
duke@0 1418 uint row;
duke@0 1419
duke@0 1420 // If no method data exists, go to profile_continue.
duke@0 1421 test_method_data_pointer(mdp, profile_continue);
duke@0 1422
duke@0 1423 // Update the total ret count.
duke@0 1424 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
duke@0 1425
duke@0 1426 for (row = 0; row < RetData::row_limit(); row++) {
duke@0 1427 Label next_test;
duke@0 1428
duke@0 1429 // See if return_bci is equal to bci[n]:
duke@0 1430 test_mdp_data_at(mdp,
duke@0 1431 in_bytes(RetData::bci_offset(row)),
duke@0 1432 return_bci, noreg,
duke@0 1433 next_test);
duke@0 1434
duke@0 1435 // return_bci is equal to bci[n]. Increment the count.
duke@0 1436 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row)));
duke@0 1437
duke@0 1438 // The method data pointer needs to be updated to reflect the new target.
duke@0 1439 update_mdp_by_offset(mdp,
duke@0 1440 in_bytes(RetData::bci_displacement_offset(row)));
duke@0 1441 jmp(profile_continue);
duke@0 1442 bind(next_test);
duke@0 1443 }
duke@0 1444
duke@0 1445 update_mdp_for_ret(return_bci);
duke@0 1446
duke@0 1447 bind(profile_continue);
duke@0 1448 }
duke@0 1449 }
duke@0 1450
duke@0 1451
duke@0 1452 void InterpreterMacroAssembler::profile_null_seen(Register mdp) {
duke@0 1453 if (ProfileInterpreter) {
duke@0 1454 Label profile_continue;
duke@0 1455
duke@0 1456 // If no method data exists, go to profile_continue.
duke@0 1457 test_method_data_pointer(mdp, profile_continue);
duke@0 1458
duke@0 1459 // The method data pointer needs to be updated.
duke@0 1460 int mdp_delta = in_bytes(BitData::bit_data_size());
duke@0 1461 if (TypeProfileCasts) {
duke@0 1462 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
duke@0 1463 }
duke@0 1464 update_mdp_by_constant(mdp, mdp_delta);
duke@0 1465
duke@0 1466 bind(profile_continue);
duke@0 1467 }
duke@0 1468 }
duke@0 1469
duke@0 1470
duke@0 1471 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) {
duke@0 1472 if (ProfileInterpreter && TypeProfileCasts) {
duke@0 1473 Label profile_continue;
duke@0 1474
duke@0 1475 // If no method data exists, go to profile_continue.
duke@0 1476 test_method_data_pointer(mdp, profile_continue);
duke@0 1477
duke@0 1478 int count_offset = in_bytes(CounterData::count_offset());
duke@0 1479 // Back up the address, since we have already bumped the mdp.
duke@0 1480 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size());
duke@0 1481
duke@0 1482 // *Decrement* the counter. We expect to see zero or small negatives.
duke@0 1483 increment_mdp_data_at(mdp, count_offset, true);
duke@0 1484
duke@0 1485 bind (profile_continue);
duke@0 1486 }
duke@0 1487 }
duke@0 1488
duke@0 1489
duke@0 1490 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) {
duke@0 1491 if (ProfileInterpreter) {
duke@0 1492 Label profile_continue;
duke@0 1493
duke@0 1494 // If no method data exists, go to profile_continue.
duke@0 1495 test_method_data_pointer(mdp, profile_continue);
duke@0 1496
duke@0 1497 // The method data pointer needs to be updated.
duke@0 1498 int mdp_delta = in_bytes(BitData::bit_data_size());
duke@0 1499 if (TypeProfileCasts) {
duke@0 1500 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
duke@0 1501
duke@0 1502 // Record the object type.
duke@0 1503 record_klass_in_profile(klass, mdp, reg2);
duke@0 1504 }
duke@0 1505 update_mdp_by_constant(mdp, mdp_delta);
duke@0 1506
duke@0 1507 bind(profile_continue);
duke@0 1508 }
duke@0 1509 }
duke@0 1510
duke@0 1511
duke@0 1512 void InterpreterMacroAssembler::profile_switch_default(Register mdp) {
duke@0 1513 if (ProfileInterpreter) {
duke@0 1514 Label profile_continue;
duke@0 1515
duke@0 1516 // If no method data exists, go to profile_continue.
duke@0 1517 test_method_data_pointer(mdp, profile_continue);
duke@0 1518
duke@0 1519 // Update the default case count
duke@0 1520 increment_mdp_data_at(mdp,
duke@0 1521 in_bytes(MultiBranchData::default_count_offset()));
duke@0 1522
duke@0 1523 // The method data pointer needs to be updated.
duke@0 1524 update_mdp_by_offset(mdp,
duke@0 1525 in_bytes(MultiBranchData::
duke@0 1526 default_displacement_offset()));
duke@0 1527
duke@0 1528 bind(profile_continue);
duke@0 1529 }
duke@0 1530 }
duke@0 1531
duke@0 1532
duke@0 1533 void InterpreterMacroAssembler::profile_switch_case(Register index,
duke@0 1534 Register mdp,
duke@0 1535 Register reg2) {
duke@0 1536 if (ProfileInterpreter) {
duke@0 1537 Label profile_continue;
duke@0 1538
duke@0 1539 // If no method data exists, go to profile_continue.
duke@0 1540 test_method_data_pointer(mdp, profile_continue);
duke@0 1541
duke@0 1542 // Build the base (index * per_case_size_in_bytes()) +
duke@0 1543 // case_array_offset_in_bytes()
duke@0 1544 movl(reg2, in_bytes(MultiBranchData::per_case_size()));
never@304 1545 imulptr(index, reg2); // XXX l ?
never@304 1546 addptr(index, in_bytes(MultiBranchData::case_array_offset())); // XXX l ?
duke@0 1547
duke@0 1548 // Update the case count
duke@0 1549 increment_mdp_data_at(mdp,
duke@0 1550 index,
duke@0 1551 in_bytes(MultiBranchData::relative_count_offset()));
duke@0 1552
duke@0 1553 // The method data pointer needs to be updated.
duke@0 1554 update_mdp_by_offset(mdp,
duke@0 1555 index,
duke@0 1556 in_bytes(MultiBranchData::
duke@0 1557 relative_displacement_offset()));
duke@0 1558
duke@0 1559 bind(profile_continue);
duke@0 1560 }
duke@0 1561 }
duke@0 1562
duke@0 1563
never@304 1564
duke@0 1565 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) {
duke@0 1566 if (state == atos) {
duke@0 1567 MacroAssembler::verify_oop(reg);
duke@0 1568 }
duke@0 1569 }
duke@0 1570
duke@0 1571 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) {
duke@0 1572 }
never@304 1573 #endif // !CC_INTERP
duke@0 1574
duke@0 1575
duke@0 1576 void InterpreterMacroAssembler::notify_method_entry() {
duke@0 1577 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
duke@0 1578 // track stack depth. If it is possible to enter interp_only_mode we add
duke@0 1579 // the code to check if the event should be sent.
duke@0 1580 if (JvmtiExport::can_post_interpreter_events()) {
duke@0 1581 Label L;
duke@0 1582 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset()));
duke@0 1583 testl(rdx, rdx);
duke@0 1584 jcc(Assembler::zero, L);
duke@0 1585 call_VM(noreg, CAST_FROM_FN_PTR(address,
duke@0 1586 InterpreterRuntime::post_method_entry));
duke@0 1587 bind(L);
duke@0 1588 }
duke@0 1589
duke@0 1590 {
duke@0 1591 SkipIfEqual skip(this, &DTraceMethodProbes, false);
duke@0 1592 get_method(c_rarg1);
duke@0 1593 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry),
duke@0 1594 r15_thread, c_rarg1);
duke@0 1595 }
duke@0 1596 }
duke@0 1597
duke@0 1598
duke@0 1599 void InterpreterMacroAssembler::notify_method_exit(
duke@0 1600 TosState state, NotifyMethodExitMode mode) {
duke@0 1601 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
duke@0 1602 // track stack depth. If it is possible to enter interp_only_mode we add
duke@0 1603 // the code to check if the event should be sent.
duke@0 1604 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) {
duke@0 1605 Label L;
duke@0 1606 // Note: frame::interpreter_frame_result has a dependency on how the
duke@0 1607 // method result is saved across the call to post_method_exit. If this
duke@0 1608 // is changed then the interpreter_frame_result implementation will
duke@0 1609 // need to be updated too.
never@304 1610
never@304 1611 // For c++ interpreter the result is always stored at a known location in the frame
never@304 1612 // template interpreter will leave it on the top of the stack.
never@304 1613 NOT_CC_INTERP(push(state);)
duke@0 1614 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset()));
duke@0 1615 testl(rdx, rdx);
duke@0 1616 jcc(Assembler::zero, L);
duke@0 1617 call_VM(noreg,
duke@0 1618 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit));
duke@0 1619 bind(L);
never@304 1620 NOT_CC_INTERP(pop(state));
duke@0 1621 }
duke@0 1622
duke@0 1623 {
duke@0 1624 SkipIfEqual skip(this, &DTraceMethodProbes, false);
never@304 1625 NOT_CC_INTERP(push(state));
duke@0 1626 get_method(c_rarg1);
duke@0 1627 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit),
duke@0 1628 r15_thread, c_rarg1);
never@304 1629 NOT_CC_INTERP(pop(state));
duke@0 1630 }
duke@0 1631 }