Mercurial > hg > graal-compiler
annotate src/cpu/sparc/vm/interp_masm_sparc.cpp @ 7184:5505fbbae3d3
Merge
| author | cjplummer |
|---|---|
| date | Thu, 29 Nov 2012 13:55:49 -0800 |
| parents | f34d701e952e b2dbd323c668 |
| children | aeaca88565e6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "interp_masm_sparc.hpp" | |
| 27 #include "interpreter/interpreter.hpp" | |
| 28 #include "interpreter/interpreterRuntime.hpp" | |
| 29 #include "oops/arrayOop.hpp" | |
| 30 #include "oops/markOop.hpp" | |
|
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31 #include "oops/methodData.hpp" |
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32 #include "oops/method.hpp" |
| 1972 | 33 #include "prims/jvmtiExport.hpp" |
| 34 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
| 35 #include "prims/jvmtiThreadState.hpp" | |
| 36 #include "runtime/basicLock.hpp" | |
| 37 #include "runtime/biasedLocking.hpp" | |
| 38 #include "runtime/sharedRuntime.hpp" | |
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39 #include "runtime/thread.inline.hpp" |
| 0 | 40 |
| 41 #ifndef CC_INTERP | |
| 42 #ifndef FAST_DISPATCH | |
| 43 #define FAST_DISPATCH 1 | |
| 44 #endif | |
| 45 #undef FAST_DISPATCH | |
| 46 | |
| 47 // Implementation of InterpreterMacroAssembler | |
| 48 | |
| 49 // This file specializes the assember with interpreter-specific macros | |
| 50 | |
| 727 | 51 const Address InterpreterMacroAssembler::l_tmp(FP, (frame::interpreter_frame_l_scratch_fp_offset * wordSize) + STACK_BIAS); |
| 52 const Address InterpreterMacroAssembler::d_tmp(FP, (frame::interpreter_frame_d_scratch_fp_offset * wordSize) + STACK_BIAS); | |
| 0 | 53 |
| 54 #else // CC_INTERP | |
| 55 #ifndef STATE | |
| 56 #define STATE(field_name) Lstate, in_bytes(byte_offset_of(BytecodeInterpreter, field_name)) | |
| 57 #endif // STATE | |
| 58 | |
| 59 #endif // CC_INTERP | |
| 60 | |
| 61 void InterpreterMacroAssembler::compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta) { | |
| 62 // Note: this algorithm is also used by C1's OSR entry sequence. | |
| 63 // Any changes should also be applied to CodeEmitter::emit_osr_entry(). | |
| 64 assert_different_registers(args_size, locals_size); | |
| 65 // max_locals*2 for TAGS. Assumes that args_size has already been adjusted. | |
| 66 subcc(locals_size, args_size, delta);// extra space for non-arguments locals in words | |
| 67 // Use br/mov combination because it works on both V8 and V9 and is | |
| 68 // faster. | |
| 69 Label skip_move; | |
| 70 br(Assembler::negative, true, Assembler::pt, skip_move); | |
| 71 delayed()->mov(G0, delta); | |
| 72 bind(skip_move); | |
| 73 round_to(delta, WordsPerLong); // make multiple of 2 (SP must be 2-word aligned) | |
| 74 sll(delta, LogBytesPerWord, delta); // extra space for locals in bytes | |
| 75 } | |
| 76 | |
| 77 #ifndef CC_INTERP | |
| 78 | |
| 79 // Dispatch code executed in the prolog of a bytecode which does not do it's | |
| 80 // own dispatch. The dispatch address is computed and placed in IdispatchAddress | |
| 81 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) { | |
| 82 assert_not_delayed(); | |
| 83 #ifdef FAST_DISPATCH | |
| 84 // FAST_DISPATCH and ProfileInterpreter are mutually exclusive since | |
| 85 // they both use I2. | |
| 86 assert(!ProfileInterpreter, "FAST_DISPATCH and +ProfileInterpreter are mutually exclusive"); | |
| 87 ldub(Lbcp, bcp_incr, Lbyte_code); // load next bytecode | |
| 88 add(Lbyte_code, Interpreter::distance_from_dispatch_table(state), Lbyte_code); | |
| 89 // add offset to correct dispatch table | |
| 90 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize | |
| 91 ld_ptr(IdispatchTables, Lbyte_code, IdispatchAddress);// get entry addr | |
| 92 #else | |
| 727 | 93 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode |
| 0 | 94 // dispatch table to use |
| 727 | 95 AddressLiteral tbl(Interpreter::dispatch_table(state)); |
| 96 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize | |
| 97 set(tbl, G3_scratch); // compute addr of table | |
| 98 ld_ptr(G3_scratch, Lbyte_code, IdispatchAddress); // get entry addr | |
| 0 | 99 #endif |
| 100 } | |
| 101 | |
| 102 | |
| 103 // Dispatch code executed in the epilog of a bytecode which does not do it's | |
| 104 // own dispatch. The dispatch address in IdispatchAddress is used for the | |
| 105 // dispatch. | |
| 106 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) { | |
| 107 assert_not_delayed(); | |
| 108 verify_FPU(1, state); | |
| 109 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
| 110 jmp( IdispatchAddress, 0 ); | |
| 111 if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr); | |
| 112 else delayed()->nop(); | |
| 113 } | |
| 114 | |
| 115 | |
| 116 void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr) { | |
| 117 // %%%% consider branching to a single shared dispatch stub (for each bcp_incr) | |
| 118 assert_not_delayed(); | |
| 119 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode | |
| 120 dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr); | |
| 121 } | |
| 122 | |
| 123 | |
| 124 void InterpreterMacroAssembler::dispatch_next_noverify_oop(TosState state, int bcp_incr) { | |
| 125 // %%%% consider branching to a single shared dispatch stub (for each bcp_incr) | |
| 126 assert_not_delayed(); | |
| 127 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode | |
| 128 dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr, false); | |
| 129 } | |
| 130 | |
| 131 | |
| 132 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 133 // load current bytecode | |
| 134 assert_not_delayed(); | |
| 135 ldub( Lbcp, 0, Lbyte_code); // load next bytecode | |
| 136 dispatch_base(state, table); | |
| 137 } | |
| 138 | |
| 139 | |
| 140 void InterpreterMacroAssembler::call_VM_leaf_base( | |
| 141 Register java_thread, | |
| 142 address entry_point, | |
| 143 int number_of_arguments | |
| 144 ) { | |
| 145 if (!java_thread->is_valid()) | |
| 146 java_thread = L7_thread_cache; | |
| 147 // super call | |
| 148 MacroAssembler::call_VM_leaf_base(java_thread, entry_point, number_of_arguments); | |
| 149 } | |
| 150 | |
| 151 | |
| 152 void InterpreterMacroAssembler::call_VM_base( | |
| 153 Register oop_result, | |
| 154 Register java_thread, | |
| 155 Register last_java_sp, | |
| 156 address entry_point, | |
| 157 int number_of_arguments, | |
| 158 bool check_exception | |
| 159 ) { | |
| 160 if (!java_thread->is_valid()) | |
| 161 java_thread = L7_thread_cache; | |
| 162 // See class ThreadInVMfromInterpreter, which assumes that the interpreter | |
| 163 // takes responsibility for setting its own thread-state on call-out. | |
| 164 // However, ThreadInVMfromInterpreter resets the state to "in_Java". | |
| 165 | |
| 166 //save_bcp(); // save bcp | |
| 167 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exception); | |
| 168 //restore_bcp(); // restore bcp | |
| 169 //restore_locals(); // restore locals pointer | |
| 170 } | |
| 171 | |
| 172 | |
| 173 void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) { | |
| 174 if (JvmtiExport::can_pop_frame()) { | |
| 175 Label L; | |
| 176 | |
| 177 // Check the "pending popframe condition" flag in the current thread | |
| 727 | 178 ld(G2_thread, JavaThread::popframe_condition_offset(), scratch_reg); |
| 0 | 179 |
| 180 // Initiate popframe handling only if it is not already being processed. If the flag | |
| 181 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
| 182 // handling - we don't want to reenter. | |
| 183 btst(JavaThread::popframe_pending_bit, scratch_reg); | |
| 184 br(zero, false, pt, L); | |
| 185 delayed()->nop(); | |
| 186 btst(JavaThread::popframe_processing_bit, scratch_reg); | |
| 187 br(notZero, false, pt, L); | |
| 188 delayed()->nop(); | |
| 189 | |
| 190 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
| 191 // address of the same-named entrypoint in the generated interpreter code. | |
| 192 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
| 193 | |
| 194 // Jump to Interpreter::_remove_activation_preserving_args_entry | |
| 195 jmpl(O0, G0, G0); | |
| 196 delayed()->nop(); | |
| 197 bind(L); | |
| 198 } | |
| 199 } | |
| 200 | |
| 201 | |
| 202 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
| 203 Register thr_state = G4_scratch; | |
| 727 | 204 ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state); |
| 205 const Address tos_addr(thr_state, JvmtiThreadState::earlyret_tos_offset()); | |
| 206 const Address oop_addr(thr_state, JvmtiThreadState::earlyret_oop_offset()); | |
| 207 const Address val_addr(thr_state, JvmtiThreadState::earlyret_value_offset()); | |
| 0 | 208 switch (state) { |
| 209 case ltos: ld_long(val_addr, Otos_l); break; | |
| 210 case atos: ld_ptr(oop_addr, Otos_l); | |
| 211 st_ptr(G0, oop_addr); break; | |
| 212 case btos: // fall through | |
| 213 case ctos: // fall through | |
| 214 case stos: // fall through | |
| 215 case itos: ld(val_addr, Otos_l1); break; | |
| 216 case ftos: ldf(FloatRegisterImpl::S, val_addr, Ftos_f); break; | |
| 217 case dtos: ldf(FloatRegisterImpl::D, val_addr, Ftos_d); break; | |
| 218 case vtos: /* nothing to do */ break; | |
| 219 default : ShouldNotReachHere(); | |
| 220 } | |
| 221 // Clean up tos value in the jvmti thread state | |
| 222 or3(G0, ilgl, G3_scratch); | |
| 223 stw(G3_scratch, tos_addr); | |
| 224 st_long(G0, val_addr); | |
| 225 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
| 226 } | |
| 227 | |
| 228 | |
| 229 void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) { | |
| 230 if (JvmtiExport::can_force_early_return()) { | |
| 231 Label L; | |
| 232 Register thr_state = G3_scratch; | |
| 727 | 233 ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state); |
| 3839 | 234 br_null_short(thr_state, pt, L); // if (thread->jvmti_thread_state() == NULL) exit; |
| 0 | 235 |
| 236 // Initiate earlyret handling only if it is not already being processed. | |
| 237 // If the flag has the earlyret_processing bit set, it means that this code | |
| 238 // is called *during* earlyret handling - we don't want to reenter. | |
| 727 | 239 ld(thr_state, JvmtiThreadState::earlyret_state_offset(), G4_scratch); |
| 3839 | 240 cmp_and_br_short(G4_scratch, JvmtiThreadState::earlyret_pending, Assembler::notEqual, pt, L); |
| 0 | 241 |
| 242 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
| 243 // same-named entrypoint in the generated interpreter code | |
| 727 | 244 ld(thr_state, JvmtiThreadState::earlyret_tos_offset(), Otos_l1); |
| 0 | 245 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), Otos_l1); |
| 246 | |
| 247 // Jump to Interpreter::_remove_activation_early_entry | |
| 248 jmpl(O0, G0, G0); | |
| 249 delayed()->nop(); | |
| 250 bind(L); | |
| 251 } | |
| 252 } | |
| 253 | |
| 254 | |
| 1295 | 255 void InterpreterMacroAssembler::super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1, Register arg_2) { |
| 0 | 256 mov(arg_1, O0); |
| 1295 | 257 mov(arg_2, O1); |
| 258 MacroAssembler::call_VM_leaf_base(thread_cache, entry_point, 2); | |
| 0 | 259 } |
| 260 #endif /* CC_INTERP */ | |
| 261 | |
| 262 | |
| 263 #ifndef CC_INTERP | |
| 264 | |
| 265 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table) { | |
| 266 assert_not_delayed(); | |
| 267 dispatch_Lbyte_code(state, table); | |
| 268 } | |
| 269 | |
| 270 | |
| 271 void InterpreterMacroAssembler::dispatch_normal(TosState state) { | |
| 272 dispatch_base(state, Interpreter::normal_table(state)); | |
| 273 } | |
| 274 | |
| 275 | |
| 276 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
| 277 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 278 } | |
| 279 | |
| 280 | |
| 281 // common code to dispatch and dispatch_only | |
| 282 // dispatch value in Lbyte_code and increment Lbcp | |
| 283 | |
| 284 void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, address* table, int bcp_incr, bool verify) { | |
| 285 verify_FPU(1, state); | |
| 286 // %%%%% maybe implement +VerifyActivationFrameSize here | |
| 287 //verify_thread(); //too slow; we will just verify on method entry & exit | |
| 288 if (verify) interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
| 289 #ifdef FAST_DISPATCH | |
| 290 if (table == Interpreter::dispatch_table(state)) { | |
| 291 // use IdispatchTables | |
| 292 add(Lbyte_code, Interpreter::distance_from_dispatch_table(state), Lbyte_code); | |
| 293 // add offset to correct dispatch table | |
| 294 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize | |
| 295 ld_ptr(IdispatchTables, Lbyte_code, G3_scratch); // get entry addr | |
| 296 } else { | |
| 297 #endif | |
| 298 // dispatch table to use | |
| 727 | 299 AddressLiteral tbl(table); |
| 0 | 300 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize |
| 727 | 301 set(tbl, G3_scratch); // compute addr of table |
| 0 | 302 ld_ptr(G3_scratch, Lbyte_code, G3_scratch); // get entry addr |
| 303 #ifdef FAST_DISPATCH | |
| 304 } | |
| 305 #endif | |
| 306 jmp( G3_scratch, 0 ); | |
| 307 if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr); | |
| 308 else delayed()->nop(); | |
| 309 } | |
| 310 | |
| 311 | |
| 312 // Helpers for expression stack | |
| 313 | |
| 314 // Longs and doubles are Category 2 computational types in the | |
| 315 // JVM specification (section 3.11.1) and take 2 expression stack or | |
| 316 // local slots. | |
| 317 // Aligning them on 32 bit with tagged stacks is hard because the code generated | |
| 318 // for the dup* bytecodes depends on what types are already on the stack. | |
| 319 // If the types are split into the two stack/local slots, that is much easier | |
| 320 // (and we can use 0 for non-reference tags). | |
| 321 | |
| 322 // Known good alignment in _LP64 but unknown otherwise | |
| 323 void InterpreterMacroAssembler::load_unaligned_double(Register r1, int offset, FloatRegister d) { | |
| 324 assert_not_delayed(); | |
| 325 | |
| 326 #ifdef _LP64 | |
| 327 ldf(FloatRegisterImpl::D, r1, offset, d); | |
| 328 #else | |
| 329 ldf(FloatRegisterImpl::S, r1, offset, d); | |
| 1506 | 330 ldf(FloatRegisterImpl::S, r1, offset + Interpreter::stackElementSize, d->successor()); |
| 0 | 331 #endif |
| 332 } | |
| 333 | |
| 334 // Known good alignment in _LP64 but unknown otherwise | |
| 335 void InterpreterMacroAssembler::store_unaligned_double(FloatRegister d, Register r1, int offset) { | |
| 336 assert_not_delayed(); | |
| 337 | |
| 338 #ifdef _LP64 | |
| 339 stf(FloatRegisterImpl::D, d, r1, offset); | |
| 340 // store something more useful here | |
| 1506 | 341 debug_only(stx(G0, r1, offset+Interpreter::stackElementSize);) |
| 0 | 342 #else |
| 343 stf(FloatRegisterImpl::S, d, r1, offset); | |
| 1506 | 344 stf(FloatRegisterImpl::S, d->successor(), r1, offset + Interpreter::stackElementSize); |
| 0 | 345 #endif |
| 346 } | |
| 347 | |
| 348 | |
| 349 // Known good alignment in _LP64 but unknown otherwise | |
| 350 void InterpreterMacroAssembler::load_unaligned_long(Register r1, int offset, Register rd) { | |
| 351 assert_not_delayed(); | |
| 352 #ifdef _LP64 | |
| 353 ldx(r1, offset, rd); | |
| 354 #else | |
| 355 ld(r1, offset, rd); | |
| 1506 | 356 ld(r1, offset + Interpreter::stackElementSize, rd->successor()); |
| 0 | 357 #endif |
| 358 } | |
| 359 | |
| 360 // Known good alignment in _LP64 but unknown otherwise | |
| 361 void InterpreterMacroAssembler::store_unaligned_long(Register l, Register r1, int offset) { | |
| 362 assert_not_delayed(); | |
| 363 | |
| 364 #ifdef _LP64 | |
| 365 stx(l, r1, offset); | |
| 366 // store something more useful here | |
| 1506 | 367 debug_only(stx(G0, r1, offset+Interpreter::stackElementSize);) |
| 0 | 368 #else |
| 369 st(l, r1, offset); | |
| 1506 | 370 st(l->successor(), r1, offset + Interpreter::stackElementSize); |
| 0 | 371 #endif |
| 372 } | |
| 373 | |
| 374 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 375 assert_not_delayed(); | |
| 376 ld(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
| 1506 | 377 inc(Lesp, Interpreter::stackElementSize); |
| 0 | 378 debug_only(verify_esp(Lesp)); |
| 379 } | |
| 380 | |
| 381 void InterpreterMacroAssembler::pop_ptr(Register r, Register scratch) { | |
| 382 assert_not_delayed(); | |
| 383 ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
| 1506 | 384 inc(Lesp, Interpreter::stackElementSize); |
| 0 | 385 debug_only(verify_esp(Lesp)); |
| 386 } | |
| 387 | |
| 388 void InterpreterMacroAssembler::pop_l(Register r) { | |
| 389 assert_not_delayed(); | |
| 390 load_unaligned_long(Lesp, Interpreter::expr_offset_in_bytes(0), r); | |
| 1506 | 391 inc(Lesp, 2*Interpreter::stackElementSize); |
| 0 | 392 debug_only(verify_esp(Lesp)); |
| 393 } | |
| 394 | |
| 395 | |
| 396 void InterpreterMacroAssembler::pop_f(FloatRegister f, Register scratch) { | |
| 397 assert_not_delayed(); | |
| 398 ldf(FloatRegisterImpl::S, Lesp, Interpreter::expr_offset_in_bytes(0), f); | |
| 1506 | 399 inc(Lesp, Interpreter::stackElementSize); |
| 0 | 400 debug_only(verify_esp(Lesp)); |
| 401 } | |
| 402 | |
| 403 | |
| 404 void InterpreterMacroAssembler::pop_d(FloatRegister f, Register scratch) { | |
| 405 assert_not_delayed(); | |
| 406 load_unaligned_double(Lesp, Interpreter::expr_offset_in_bytes(0), f); | |
| 1506 | 407 inc(Lesp, 2*Interpreter::stackElementSize); |
| 0 | 408 debug_only(verify_esp(Lesp)); |
| 409 } | |
| 410 | |
| 411 | |
| 412 void InterpreterMacroAssembler::push_i(Register r) { | |
| 413 assert_not_delayed(); | |
| 414 debug_only(verify_esp(Lesp)); | |
| 1506 | 415 st(r, Lesp, 0); |
| 416 dec(Lesp, Interpreter::stackElementSize); | |
| 0 | 417 } |
| 418 | |
| 419 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 420 assert_not_delayed(); | |
| 1506 | 421 st_ptr(r, Lesp, 0); |
| 422 dec(Lesp, Interpreter::stackElementSize); | |
| 0 | 423 } |
| 424 | |
| 425 // remember: our convention for longs in SPARC is: | |
| 426 // O0 (Otos_l1) has high-order part in first word, | |
| 427 // O1 (Otos_l2) has low-order part in second word | |
| 428 | |
| 429 void InterpreterMacroAssembler::push_l(Register r) { | |
| 430 assert_not_delayed(); | |
| 431 debug_only(verify_esp(Lesp)); | |
| 1506 | 432 // Longs are stored in memory-correct order, even if unaligned. |
| 433 int offset = -Interpreter::stackElementSize; | |
| 0 | 434 store_unaligned_long(r, Lesp, offset); |
| 1506 | 435 dec(Lesp, 2 * Interpreter::stackElementSize); |
| 0 | 436 } |
| 437 | |
| 438 | |
| 439 void InterpreterMacroAssembler::push_f(FloatRegister f) { | |
| 440 assert_not_delayed(); | |
| 441 debug_only(verify_esp(Lesp)); | |
| 1506 | 442 stf(FloatRegisterImpl::S, f, Lesp, 0); |
| 443 dec(Lesp, Interpreter::stackElementSize); | |
| 0 | 444 } |
| 445 | |
| 446 | |
| 447 void InterpreterMacroAssembler::push_d(FloatRegister d) { | |
| 448 assert_not_delayed(); | |
| 449 debug_only(verify_esp(Lesp)); | |
| 1506 | 450 // Longs are stored in memory-correct order, even if unaligned. |
| 451 int offset = -Interpreter::stackElementSize; | |
| 0 | 452 store_unaligned_double(d, Lesp, offset); |
| 1506 | 453 dec(Lesp, 2 * Interpreter::stackElementSize); |
| 0 | 454 } |
| 455 | |
| 456 | |
| 457 void InterpreterMacroAssembler::push(TosState state) { | |
| 458 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
| 459 switch (state) { | |
| 460 case atos: push_ptr(); break; | |
| 461 case btos: push_i(); break; | |
| 462 case ctos: | |
| 463 case stos: push_i(); break; | |
| 464 case itos: push_i(); break; | |
| 465 case ltos: push_l(); break; | |
| 466 case ftos: push_f(); break; | |
| 467 case dtos: push_d(); break; | |
| 468 case vtos: /* nothing to do */ break; | |
| 469 default : ShouldNotReachHere(); | |
| 470 } | |
| 471 } | |
| 472 | |
| 473 | |
| 474 void InterpreterMacroAssembler::pop(TosState state) { | |
| 475 switch (state) { | |
| 476 case atos: pop_ptr(); break; | |
| 477 case btos: pop_i(); break; | |
| 478 case ctos: | |
| 479 case stos: pop_i(); break; | |
| 480 case itos: pop_i(); break; | |
| 481 case ltos: pop_l(); break; | |
| 482 case ftos: pop_f(); break; | |
| 483 case dtos: pop_d(); break; | |
| 484 case vtos: /* nothing to do */ break; | |
| 485 default : ShouldNotReachHere(); | |
| 486 } | |
| 487 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
| 488 } | |
| 489 | |
| 490 | |
| 1506 | 491 // Helpers for swap and dup |
| 492 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
| 0 | 493 ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(n), val); |
| 494 } | |
| 1506 | 495 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
| 0 | 496 st_ptr(val, Lesp, Interpreter::expr_offset_in_bytes(n)); |
| 497 } | |
| 498 | |
| 499 | |
| 500 void InterpreterMacroAssembler::load_receiver(Register param_count, | |
| 501 Register recv) { | |
| 1506 | 502 sll(param_count, Interpreter::logStackElementSize, param_count); |
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503 ld_ptr(Lesp, param_count, recv); // gets receiver oop |
| 0 | 504 } |
| 505 | |
| 506 void InterpreterMacroAssembler::empty_expression_stack() { | |
| 507 // Reset Lesp. | |
| 508 sub( Lmonitors, wordSize, Lesp ); | |
| 509 | |
| 510 // Reset SP by subtracting more space from Lesp. | |
| 511 Label done; | |
| 727 | 512 assert(G4_scratch != Gframe_size, "Only you can prevent register aliasing!"); |
| 0 | 513 |
| 514 // A native does not need to do this, since its callee does not change SP. | |
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515 ld(Lmethod, Method::access_flags_offset(), Gframe_size); // Load access flags. |
| 0 | 516 btst(JVM_ACC_NATIVE, Gframe_size); |
| 517 br(Assembler::notZero, false, Assembler::pt, done); | |
| 518 delayed()->nop(); | |
| 519 | |
| 520 // Compute max expression stack+register save area | |
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521 ld_ptr(Lmethod, in_bytes(Method::const_offset()), Gframe_size); |
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522 lduh(Gframe_size, in_bytes(ConstMethod::max_stack_offset()), Gframe_size); // Load max stack. |
| 0 | 523 add( Gframe_size, frame::memory_parameter_word_sp_offset, Gframe_size ); |
| 524 | |
| 525 // | |
| 526 // now set up a stack frame with the size computed above | |
| 527 // | |
| 528 //round_to( Gframe_size, WordsPerLong ); // -- moved down to the "and" below | |
| 529 sll( Gframe_size, LogBytesPerWord, Gframe_size ); | |
| 530 sub( Lesp, Gframe_size, Gframe_size ); | |
| 531 and3( Gframe_size, -(2 * wordSize), Gframe_size ); // align SP (downwards) to an 8/16-byte boundary | |
| 532 debug_only(verify_sp(Gframe_size, G4_scratch)); | |
| 533 #ifdef _LP64 | |
| 534 sub(Gframe_size, STACK_BIAS, Gframe_size ); | |
| 535 #endif | |
| 536 mov(Gframe_size, SP); | |
| 537 | |
| 538 bind(done); | |
| 539 } | |
| 540 | |
| 541 | |
| 542 #ifdef ASSERT | |
| 543 void InterpreterMacroAssembler::verify_sp(Register Rsp, Register Rtemp) { | |
| 544 Label Bad, OK; | |
| 545 | |
| 546 // Saved SP must be aligned. | |
| 547 #ifdef _LP64 | |
| 548 btst(2*BytesPerWord-1, Rsp); | |
| 549 #else | |
| 550 btst(LongAlignmentMask, Rsp); | |
| 551 #endif | |
| 552 br(Assembler::notZero, false, Assembler::pn, Bad); | |
| 553 delayed()->nop(); | |
| 554 | |
| 555 // Saved SP, plus register window size, must not be above FP. | |
| 556 add(Rsp, frame::register_save_words * wordSize, Rtemp); | |
| 557 #ifdef _LP64 | |
| 558 sub(Rtemp, STACK_BIAS, Rtemp); // Bias Rtemp before cmp to FP | |
| 559 #endif | |
| 3839 | 560 cmp_and_brx_short(Rtemp, FP, Assembler::greaterUnsigned, Assembler::pn, Bad); |
| 0 | 561 |
| 562 // Saved SP must not be ridiculously below current SP. | |
| 563 size_t maxstack = MAX2(JavaThread::stack_size_at_create(), (size_t) 4*K*K); | |
| 564 set(maxstack, Rtemp); | |
| 565 sub(SP, Rtemp, Rtemp); | |
| 566 #ifdef _LP64 | |
| 567 add(Rtemp, STACK_BIAS, Rtemp); // Unbias Rtemp before cmp to Rsp | |
| 568 #endif | |
| 3839 | 569 cmp_and_brx_short(Rsp, Rtemp, Assembler::lessUnsigned, Assembler::pn, Bad); |
| 570 | |
| 571 ba_short(OK); | |
| 0 | 572 |
| 573 bind(Bad); | |
| 574 stop("on return to interpreted call, restored SP is corrupted"); | |
| 575 | |
| 576 bind(OK); | |
| 577 } | |
| 578 | |
| 579 | |
| 580 void InterpreterMacroAssembler::verify_esp(Register Resp) { | |
| 581 // about to read or write Resp[0] | |
| 582 // make sure it is not in the monitors or the register save area | |
| 583 Label OK1, OK2; | |
| 584 | |
| 585 cmp(Resp, Lmonitors); | |
| 586 brx(Assembler::lessUnsigned, true, Assembler::pt, OK1); | |
| 587 delayed()->sub(Resp, frame::memory_parameter_word_sp_offset * wordSize, Resp); | |
| 588 stop("too many pops: Lesp points into monitor area"); | |
| 589 bind(OK1); | |
| 590 #ifdef _LP64 | |
| 591 sub(Resp, STACK_BIAS, Resp); | |
| 592 #endif | |
| 593 cmp(Resp, SP); | |
| 594 brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, OK2); | |
| 595 delayed()->add(Resp, STACK_BIAS + frame::memory_parameter_word_sp_offset * wordSize, Resp); | |
| 596 stop("too many pushes: Lesp points into register window"); | |
| 597 bind(OK2); | |
| 598 } | |
| 599 #endif // ASSERT | |
| 600 | |
| 601 // Load compiled (i2c) or interpreter entry when calling from interpreted and | |
| 602 // do the call. Centralized so that all interpreter calls will do the same actions. | |
| 603 // If jvmti single stepping is on for a thread we must not call compiled code. | |
| 604 void InterpreterMacroAssembler::call_from_interpreter(Register target, Register scratch, Register Rret) { | |
| 605 | |
| 606 // Assume we want to go compiled if available | |
| 607 | |
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608 ld_ptr(G5_method, in_bytes(Method::from_interpreted_offset()), target); |
| 0 | 609 |
| 610 if (JvmtiExport::can_post_interpreter_events()) { | |
| 611 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 612 // compiled code in threads for which the event is enabled. Check here for | |
| 613 // interp_only_mode if these events CAN be enabled. | |
| 614 verify_thread(); | |
| 615 Label skip_compiled_code; | |
| 616 | |
| 727 | 617 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
| 0 | 618 ld(interp_only, scratch); |
| 3839 | 619 cmp_zero_and_br(Assembler::notZero, scratch, skip_compiled_code, true, Assembler::pn); |
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620 delayed()->ld_ptr(G5_method, in_bytes(Method::interpreter_entry_offset()), target); |
| 0 | 621 bind(skip_compiled_code); |
| 622 } | |
| 623 | |
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624 // the i2c_adapters need Method* in G5_method (right? %%%) |
| 0 | 625 // do the call |
| 626 #ifdef ASSERT | |
| 627 { | |
| 628 Label ok; | |
| 3839 | 629 br_notnull_short(target, Assembler::pt, ok); |
| 0 | 630 stop("null entry point"); |
| 631 bind(ok); | |
| 632 } | |
| 633 #endif // ASSERT | |
| 634 | |
| 635 // Adjust Rret first so Llast_SP can be same as Rret | |
| 636 add(Rret, -frame::pc_return_offset, O7); | |
| 637 add(Lesp, BytesPerWord, Gargs); // setup parameter pointer | |
| 638 // Record SP so we can remove any stack space allocated by adapter transition | |
| 639 jmp(target, 0); | |
| 640 delayed()->mov(SP, Llast_SP); | |
| 641 } | |
| 642 | |
| 643 void InterpreterMacroAssembler::if_cmp(Condition cc, bool ptr_compare) { | |
| 644 assert_not_delayed(); | |
| 645 | |
| 646 Label not_taken; | |
| 647 if (ptr_compare) brx(cc, false, Assembler::pn, not_taken); | |
| 648 else br (cc, false, Assembler::pn, not_taken); | |
| 649 delayed()->nop(); | |
| 650 | |
| 651 TemplateTable::branch(false,false); | |
| 652 | |
| 653 bind(not_taken); | |
| 654 | |
| 655 profile_not_taken_branch(G3_scratch); | |
| 656 } | |
| 657 | |
| 658 | |
| 659 void InterpreterMacroAssembler::get_2_byte_integer_at_bcp( | |
| 660 int bcp_offset, | |
| 661 Register Rtmp, | |
| 662 Register Rdst, | |
| 663 signedOrNot is_signed, | |
| 664 setCCOrNot should_set_CC ) { | |
| 665 assert(Rtmp != Rdst, "need separate temp register"); | |
| 666 assert_not_delayed(); | |
| 667 switch (is_signed) { | |
| 668 default: ShouldNotReachHere(); | |
| 669 | |
| 670 case Signed: ldsb( Lbcp, bcp_offset, Rdst ); break; // high byte | |
| 671 case Unsigned: ldub( Lbcp, bcp_offset, Rdst ); break; // high byte | |
| 672 } | |
| 673 ldub( Lbcp, bcp_offset + 1, Rtmp ); // low byte | |
| 674 sll( Rdst, BitsPerByte, Rdst); | |
| 675 switch (should_set_CC ) { | |
| 676 default: ShouldNotReachHere(); | |
| 677 | |
| 678 case set_CC: orcc( Rdst, Rtmp, Rdst ); break; | |
| 679 case dont_set_CC: or3( Rdst, Rtmp, Rdst ); break; | |
| 680 } | |
| 681 } | |
| 682 | |
| 683 | |
| 684 void InterpreterMacroAssembler::get_4_byte_integer_at_bcp( | |
| 685 int bcp_offset, | |
| 686 Register Rtmp, | |
| 687 Register Rdst, | |
| 688 setCCOrNot should_set_CC ) { | |
| 689 assert(Rtmp != Rdst, "need separate temp register"); | |
| 690 assert_not_delayed(); | |
| 691 add( Lbcp, bcp_offset, Rtmp); | |
| 692 andcc( Rtmp, 3, G0); | |
| 693 Label aligned; | |
| 694 switch (should_set_CC ) { | |
| 695 default: ShouldNotReachHere(); | |
| 696 | |
| 697 case set_CC: break; | |
| 698 case dont_set_CC: break; | |
| 699 } | |
| 700 | |
| 701 br(Assembler::zero, true, Assembler::pn, aligned); | |
| 702 #ifdef _LP64 | |
| 703 delayed()->ldsw(Rtmp, 0, Rdst); | |
| 704 #else | |
| 705 delayed()->ld(Rtmp, 0, Rdst); | |
| 706 #endif | |
| 707 | |
| 708 ldub(Lbcp, bcp_offset + 3, Rdst); | |
| 709 ldub(Lbcp, bcp_offset + 2, Rtmp); sll(Rtmp, 8, Rtmp); or3(Rtmp, Rdst, Rdst); | |
| 710 ldub(Lbcp, bcp_offset + 1, Rtmp); sll(Rtmp, 16, Rtmp); or3(Rtmp, Rdst, Rdst); | |
| 711 #ifdef _LP64 | |
| 712 ldsb(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp); | |
| 713 #else | |
| 714 // Unsigned load is faster than signed on some implementations | |
| 715 ldub(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp); | |
| 716 #endif | |
| 717 or3(Rtmp, Rdst, Rdst ); | |
| 718 | |
| 719 bind(aligned); | |
| 720 if (should_set_CC == set_CC) tst(Rdst); | |
| 721 } | |
| 722 | |
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723 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register temp, Register index, |
| 1565 | 724 int bcp_offset, size_t index_size) { |
| 1503 | 725 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
| 1565 | 726 if (index_size == sizeof(u2)) { |
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727 get_2_byte_integer_at_bcp(bcp_offset, temp, index, Unsigned); |
| 1565 | 728 } else if (index_size == sizeof(u4)) { |
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729 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); |
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730 get_4_byte_integer_at_bcp(bcp_offset, temp, index); |
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731 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
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732 xor3(index, -1, index); // convert to plain index |
| 1565 | 733 } else if (index_size == sizeof(u1)) { |
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734 ldub(Lbcp, bcp_offset, index); |
| 1565 | 735 } else { |
| 736 ShouldNotReachHere(); | |
| 1503 | 737 } |
| 738 } | |
| 739 | |
| 740 | |
| 741 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register tmp, | |
| 1565 | 742 int bcp_offset, size_t index_size) { |
| 0 | 743 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
| 744 assert_different_registers(cache, tmp); | |
| 745 assert_not_delayed(); | |
| 1565 | 746 get_cache_index_at_bcp(cache, tmp, bcp_offset, index_size); |
| 1503 | 747 // convert from field index to ConstantPoolCacheEntry index and from |
| 748 // word index to byte offset | |
| 0 | 749 sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp); |
| 750 add(LcpoolCache, tmp, cache); | |
| 751 } | |
| 752 | |
| 753 | |
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754 void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache, |
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755 Register temp, |
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756 Register bytecode, |
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757 int byte_no, |
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758 int bcp_offset, |
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759 size_t index_size) { |
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760 get_cache_and_index_at_bcp(cache, temp, bcp_offset, index_size); |
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761 ld_ptr(cache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset(), bytecode); |
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762 const int shift_count = (1 + byte_no) * BitsPerByte; |
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763 assert((byte_no == TemplateTable::f1_byte && shift_count == ConstantPoolCacheEntry::bytecode_1_shift) || |
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764 (byte_no == TemplateTable::f2_byte && shift_count == ConstantPoolCacheEntry::bytecode_2_shift), |
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765 "correct shift count"); |
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766 srl(bytecode, shift_count, bytecode); |
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767 assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask"); |
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768 and3(bytecode, ConstantPoolCacheEntry::bytecode_1_mask, bytecode); |
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769 } |
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770 |
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771 |
| 1503 | 772 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
| 1565 | 773 int bcp_offset, size_t index_size) { |
| 0 | 774 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
| 775 assert_different_registers(cache, tmp); | |
| 776 assert_not_delayed(); | |
| 1565 | 777 if (index_size == sizeof(u2)) { |
| 778 get_2_byte_integer_at_bcp(bcp_offset, cache, tmp, Unsigned); | |
| 779 } else { | |
| 780 ShouldNotReachHere(); // other sizes not supported here | |
| 781 } | |
| 0 | 782 // convert from field index to ConstantPoolCacheEntry index |
| 783 // and from word index to byte offset | |
| 784 sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp); | |
| 785 // skip past the header | |
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786 add(tmp, in_bytes(ConstantPoolCache::base_offset()), tmp); |
| 0 | 787 // construct pointer to cache entry |
| 788 add(LcpoolCache, tmp, cache); | |
| 789 } | |
| 790 | |
| 791 | |
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792 // Load object from cpool->resolved_references(index) |
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793 void InterpreterMacroAssembler::load_resolved_reference_at_index( |
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794 Register result, Register index) { |
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795 assert_different_registers(result, index); |
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796 assert_not_delayed(); |
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797 // convert from field index to resolved_references() index and from |
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798 // word index to byte offset. Since this is a java object, it can be compressed |
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799 Register tmp = index; // reuse |
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800 sll(index, LogBytesPerHeapOop, tmp); |
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801 get_constant_pool(result); |
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802 // load pointer for resolved_references[] objArray |
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803 ld_ptr(result, ConstantPool::resolved_references_offset_in_bytes(), result); |
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804 // JNIHandles::resolve(result) |
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805 ld_ptr(result, 0, result); |
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806 // Add in the index |
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807 add(result, tmp, result); |
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808 load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result); |
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809 } |
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810 |
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811 |
| 0 | 812 // Generate a subtype check: branch to ok_is_subtype if sub_klass is |
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813 // a subtype of super_klass. Blows registers Rsuper_klass, Rsub_klass, tmp1, tmp2. |
| 0 | 814 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, |
| 815 Register Rsuper_klass, | |
| 816 Register Rtmp1, | |
| 817 Register Rtmp2, | |
| 818 Register Rtmp3, | |
| 819 Label &ok_is_subtype ) { | |
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820 Label not_subtype; |
| 0 | 821 |
| 822 // Profile the not-null value's klass. | |
| 823 profile_typecheck(Rsub_klass, Rtmp1); | |
| 824 | |
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825 check_klass_subtype_fast_path(Rsub_klass, Rsuper_klass, |
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826 Rtmp1, Rtmp2, |
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827 &ok_is_subtype, ¬_subtype, NULL); |
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828 |
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829 check_klass_subtype_slow_path(Rsub_klass, Rsuper_klass, |
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830 Rtmp1, Rtmp2, Rtmp3, /*hack:*/ noreg, |
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831 &ok_is_subtype, NULL); |
| 0 | 832 |
| 833 bind(not_subtype); | |
| 834 profile_typecheck_failed(Rtmp1); | |
| 835 } | |
| 836 | |
| 837 // Separate these two to allow for delay slot in middle | |
| 838 // These are used to do a test and full jump to exception-throwing code. | |
| 839 | |
| 840 // %%%%% Could possibly reoptimize this by testing to see if could use | |
| 841 // a single conditional branch (i.e. if span is small enough. | |
| 842 // If you go that route, than get rid of the split and give up | |
| 843 // on the delay-slot hack. | |
| 844 | |
| 845 void InterpreterMacroAssembler::throw_if_not_1_icc( Condition ok_condition, | |
| 846 Label& ok ) { | |
| 847 assert_not_delayed(); | |
| 848 br(ok_condition, true, pt, ok); | |
| 849 // DELAY SLOT | |
| 850 } | |
| 851 | |
| 852 void InterpreterMacroAssembler::throw_if_not_1_xcc( Condition ok_condition, | |
| 853 Label& ok ) { | |
| 854 assert_not_delayed(); | |
| 855 bp( ok_condition, true, Assembler::xcc, pt, ok); | |
| 856 // DELAY SLOT | |
| 857 } | |
| 858 | |
| 859 void InterpreterMacroAssembler::throw_if_not_1_x( Condition ok_condition, | |
| 860 Label& ok ) { | |
| 861 assert_not_delayed(); | |
| 862 brx(ok_condition, true, pt, ok); | |
| 863 // DELAY SLOT | |
| 864 } | |
| 865 | |
| 866 void InterpreterMacroAssembler::throw_if_not_2( address throw_entry_point, | |
| 867 Register Rscratch, | |
| 868 Label& ok ) { | |
| 869 assert(throw_entry_point != NULL, "entry point must be generated by now"); | |
| 727 | 870 AddressLiteral dest(throw_entry_point); |
| 871 jump_to(dest, Rscratch); | |
| 0 | 872 delayed()->nop(); |
| 873 bind(ok); | |
| 874 } | |
| 875 | |
| 876 | |
| 877 // And if you cannot use the delay slot, here is a shorthand: | |
| 878 | |
| 879 void InterpreterMacroAssembler::throw_if_not_icc( Condition ok_condition, | |
| 880 address throw_entry_point, | |
| 881 Register Rscratch ) { | |
| 882 Label ok; | |
| 883 if (ok_condition != never) { | |
| 884 throw_if_not_1_icc( ok_condition, ok); | |
| 885 delayed()->nop(); | |
| 886 } | |
| 887 throw_if_not_2( throw_entry_point, Rscratch, ok); | |
| 888 } | |
| 889 void InterpreterMacroAssembler::throw_if_not_xcc( Condition ok_condition, | |
| 890 address throw_entry_point, | |
| 891 Register Rscratch ) { | |
| 892 Label ok; | |
| 893 if (ok_condition != never) { | |
| 894 throw_if_not_1_xcc( ok_condition, ok); | |
| 895 delayed()->nop(); | |
| 896 } | |
| 897 throw_if_not_2( throw_entry_point, Rscratch, ok); | |
| 898 } | |
| 899 void InterpreterMacroAssembler::throw_if_not_x( Condition ok_condition, | |
| 900 address throw_entry_point, | |
| 901 Register Rscratch ) { | |
| 902 Label ok; | |
| 903 if (ok_condition != never) { | |
| 904 throw_if_not_1_x( ok_condition, ok); | |
| 905 delayed()->nop(); | |
| 906 } | |
| 907 throw_if_not_2( throw_entry_point, Rscratch, ok); | |
| 908 } | |
| 909 | |
| 910 // Check that index is in range for array, then shift index by index_shift, and put arrayOop + shifted_index into res | |
| 911 // Note: res is still shy of address by array offset into object. | |
| 912 | |
| 913 void InterpreterMacroAssembler::index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res) { | |
| 914 assert_not_delayed(); | |
| 915 | |
| 916 verify_oop(array); | |
| 917 #ifdef _LP64 | |
| 918 // sign extend since tos (index) can be a 32bit value | |
| 919 sra(index, G0, index); | |
| 920 #endif // _LP64 | |
| 921 | |
| 922 // check array | |
| 923 Label ptr_ok; | |
| 924 tst(array); | |
| 925 throw_if_not_1_x( notZero, ptr_ok ); | |
| 926 delayed()->ld( array, arrayOopDesc::length_offset_in_bytes(), tmp ); // check index | |
| 927 throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ptr_ok); | |
| 928 | |
| 929 Label index_ok; | |
| 930 cmp(index, tmp); | |
| 931 throw_if_not_1_icc( lessUnsigned, index_ok ); | |
| 932 if (index_shift > 0) delayed()->sll(index, index_shift, index); | |
| 933 else delayed()->add(array, index, res); // addr - const offset in index | |
| 934 // convention: move aberrant index into G3_scratch for exception message | |
| 935 mov(index, G3_scratch); | |
| 936 throw_if_not_2( Interpreter::_throw_ArrayIndexOutOfBoundsException_entry, G4_scratch, index_ok); | |
| 937 | |
| 938 // add offset if didn't do it in delay slot | |
| 939 if (index_shift > 0) add(array, index, res); // addr - const offset in index | |
| 940 } | |
| 941 | |
| 942 | |
| 943 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) { | |
| 944 assert_not_delayed(); | |
| 945 | |
| 946 // pop array | |
| 947 pop_ptr(array); | |
| 948 | |
| 949 // check array | |
| 950 index_check_without_pop(array, index, index_shift, tmp, res); | |
| 951 } | |
| 952 | |
| 953 | |
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954 void InterpreterMacroAssembler::get_const(Register Rdst) { |
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955 ld_ptr(Lmethod, in_bytes(Method::const_offset()), Rdst); |
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956 } |
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957 |
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958 |
| 0 | 959 void InterpreterMacroAssembler::get_constant_pool(Register Rdst) { |
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960 get_const(Rdst); |
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961 ld_ptr(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst); |
| 0 | 962 } |
| 963 | |
| 964 | |
| 965 void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) { | |
| 966 get_constant_pool(Rdst); | |
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967 ld_ptr(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst); |
| 0 | 968 } |
| 969 | |
| 970 | |
| 971 void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) { | |
| 972 get_constant_pool(Rcpool); | |
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973 ld_ptr(Rcpool, ConstantPool::tags_offset_in_bytes(), Rtags); |
| 0 | 974 } |
| 975 | |
| 976 | |
| 977 // unlock if synchronized method | |
| 978 // | |
| 979 // Unlock the receiver if this is a synchronized method. | |
| 980 // Unlock any Java monitors from syncronized blocks. | |
| 981 // | |
| 982 // If there are locked Java monitors | |
| 983 // If throw_monitor_exception | |
| 984 // throws IllegalMonitorStateException | |
| 985 // Else if install_monitor_exception | |
| 986 // installs IllegalMonitorStateException | |
| 987 // Else | |
| 988 // no error processing | |
| 989 void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state, | |
| 990 bool throw_monitor_exception, | |
| 991 bool install_monitor_exception) { | |
| 992 Label unlocked, unlock, no_unlock; | |
| 993 | |
| 994 // get the value of _do_not_unlock_if_synchronized into G1_scratch | |
| 727 | 995 const Address do_not_unlock_if_synchronized(G2_thread, |
| 996 JavaThread::do_not_unlock_if_synchronized_offset()); | |
| 0 | 997 ldbool(do_not_unlock_if_synchronized, G1_scratch); |
| 998 stbool(G0, do_not_unlock_if_synchronized); // reset the flag | |
| 999 | |
| 1000 // check if synchronized method | |
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1001 const Address access_flags(Lmethod, Method::access_flags_offset()); |
| 0 | 1002 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); |
| 1003 push(state); // save tos | |
| 727 | 1004 ld(access_flags, G3_scratch); // Load access flags. |
| 0 | 1005 btst(JVM_ACC_SYNCHRONIZED, G3_scratch); |
| 727 | 1006 br(zero, false, pt, unlocked); |
| 0 | 1007 delayed()->nop(); |
| 1008 | |
| 1009 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
| 1010 // is set. | |
| 3839 | 1011 cmp_zero_and_br(Assembler::notZero, G1_scratch, no_unlock); |
| 0 | 1012 delayed()->nop(); |
| 1013 | |
| 1014 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 1015 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 1016 | |
| 1017 //Intel: if (throw_monitor_exception) ... else ... | |
| 1018 // Entry already unlocked, need to throw exception | |
| 1019 //... | |
| 1020 | |
| 1021 // pass top-most monitor elem | |
| 1022 add( top_most_monitor(), O1 ); | |
| 1023 | |
| 1024 ld_ptr(O1, BasicObjectLock::obj_offset_in_bytes(), G3_scratch); | |
| 3839 | 1025 br_notnull_short(G3_scratch, pt, unlock); |
| 0 | 1026 |
| 1027 if (throw_monitor_exception) { | |
| 1028 // Entry already unlocked need to throw an exception | |
| 1029 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 1030 should_not_reach_here(); | |
| 1031 } else { | |
| 1032 // Monitor already unlocked during a stack unroll. | |
| 1033 // If requested, install an illegal_monitor_state_exception. | |
| 1034 // Continue with stack unrolling. | |
| 1035 if (install_monitor_exception) { | |
| 1036 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 1037 } | |
| 3839 | 1038 ba_short(unlocked); |
| 0 | 1039 } |
| 1040 | |
| 1041 bind(unlock); | |
| 1042 | |
| 1043 unlock_object(O1); | |
| 1044 | |
| 1045 bind(unlocked); | |
| 1046 | |
| 1047 // I0, I1: Might contain return value | |
| 1048 | |
| 1049 // Check that all monitors are unlocked | |
| 1050 { Label loop, exception, entry, restart; | |
| 1051 | |
| 1052 Register Rmptr = O0; | |
| 1053 Register Rtemp = O1; | |
| 1054 Register Rlimit = Lmonitors; | |
| 1055 const jint delta = frame::interpreter_frame_monitor_size() * wordSize; | |
| 1056 assert( (delta & LongAlignmentMask) == 0, | |
| 1057 "sizeof BasicObjectLock must be even number of doublewords"); | |
| 1058 | |
| 1059 #ifdef ASSERT | |
| 1060 add(top_most_monitor(), Rmptr, delta); | |
| 1061 { Label L; | |
| 1062 // ensure that Rmptr starts out above (or at) Rlimit | |
| 3839 | 1063 cmp_and_brx_short(Rmptr, Rlimit, Assembler::greaterEqualUnsigned, pn, L); |
| 0 | 1064 stop("monitor stack has negative size"); |
| 1065 bind(L); | |
| 1066 } | |
| 1067 #endif | |
| 1068 bind(restart); | |
| 3839 | 1069 ba(entry); |
| 0 | 1070 delayed()-> |
| 1071 add(top_most_monitor(), Rmptr, delta); // points to current entry, starting with bottom-most entry | |
| 1072 | |
| 1073 // Entry is still locked, need to throw exception | |
| 1074 bind(exception); | |
| 1075 if (throw_monitor_exception) { | |
| 1076 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 1077 should_not_reach_here(); | |
| 1078 } else { | |
| 1079 // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception. | |
| 1080 // Unlock does not block, so don't have to worry about the frame | |
| 1081 unlock_object(Rmptr); | |
| 1082 if (install_monitor_exception) { | |
| 1083 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 1084 } | |
| 3839 | 1085 ba_short(restart); |
| 0 | 1086 } |
| 1087 | |
| 1088 bind(loop); | |
| 1089 cmp(Rtemp, G0); // check if current entry is used | |
| 1090 brx(Assembler::notEqual, false, pn, exception); | |
| 1091 delayed()-> | |
| 1092 dec(Rmptr, delta); // otherwise advance to next entry | |
| 1093 #ifdef ASSERT | |
| 1094 { Label L; | |
| 1095 // ensure that Rmptr has not somehow stepped below Rlimit | |
| 3839 | 1096 cmp_and_brx_short(Rmptr, Rlimit, Assembler::greaterEqualUnsigned, pn, L); |
| 0 | 1097 stop("ran off the end of the monitor stack"); |
| 1098 bind(L); | |
| 1099 } | |
| 1100 #endif | |
| 1101 bind(entry); | |
| 1102 cmp(Rmptr, Rlimit); // check if bottom reached | |
| 1103 brx(Assembler::notEqual, true, pn, loop); // if not at bottom then check this entry | |
| 1104 delayed()-> | |
| 1105 ld_ptr(Rmptr, BasicObjectLock::obj_offset_in_bytes() - delta, Rtemp); | |
| 1106 } | |
| 1107 | |
| 1108 bind(no_unlock); | |
| 1109 pop(state); | |
| 1110 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
| 1111 } | |
| 1112 | |
| 1113 | |
| 1114 // remove activation | |
| 1115 // | |
| 1116 // Unlock the receiver if this is a synchronized method. | |
| 1117 // Unlock any Java monitors from syncronized blocks. | |
| 1118 // Remove the activation from the stack. | |
| 1119 // | |
| 1120 // If there are locked Java monitors | |
| 1121 // If throw_monitor_exception | |
| 1122 // throws IllegalMonitorStateException | |
| 1123 // Else if install_monitor_exception | |
| 1124 // installs IllegalMonitorStateException | |
| 1125 // Else | |
| 1126 // no error processing | |
| 1127 void InterpreterMacroAssembler::remove_activation(TosState state, | |
| 1128 bool throw_monitor_exception, | |
| 1129 bool install_monitor_exception) { | |
| 1130 | |
| 1131 unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception); | |
| 1132 | |
| 1133 // save result (push state before jvmti call and pop it afterwards) and notify jvmti | |
| 1134 notify_method_exit(false, state, NotifyJVMTI); | |
| 1135 | |
| 1136 interp_verify_oop(Otos_i, state, __FILE__, __LINE__); | |
| 1137 verify_thread(); | |
| 1138 | |
| 1139 // return tos | |
| 1140 assert(Otos_l1 == Otos_i, "adjust code below"); | |
| 1141 switch (state) { | |
| 1142 #ifdef _LP64 | |
| 1143 case ltos: mov(Otos_l, Otos_l->after_save()); break; // O0 -> I0 | |
| 1144 #else | |
| 1145 case ltos: mov(Otos_l2, Otos_l2->after_save()); // fall through // O1 -> I1 | |
| 1146 #endif | |
| 1147 case btos: // fall through | |
| 1148 case ctos: | |
| 1149 case stos: // fall through | |
| 1150 case atos: // fall through | |
| 1151 case itos: mov(Otos_l1, Otos_l1->after_save()); break; // O0 -> I0 | |
| 1152 case ftos: // fall through | |
| 1153 case dtos: // fall through | |
| 1154 case vtos: /* nothing to do */ break; | |
| 1155 default : ShouldNotReachHere(); | |
| 1156 } | |
| 1157 | |
| 1158 #if defined(COMPILER2) && !defined(_LP64) | |
| 1159 if (state == ltos) { | |
| 1160 // C2 expects long results in G1 we can't tell if we're returning to interpreted | |
| 1161 // or compiled so just be safe use G1 and O0/O1 | |
| 1162 | |
| 1163 // Shift bits into high (msb) of G1 | |
| 1164 sllx(Otos_l1->after_save(), 32, G1); | |
| 1165 // Zero extend low bits | |
| 1166 srl (Otos_l2->after_save(), 0, Otos_l2->after_save()); | |
| 1167 or3 (Otos_l2->after_save(), G1, G1); | |
| 1168 } | |
| 1169 #endif /* COMPILER2 */ | |
| 1170 | |
| 1171 } | |
| 1172 #endif /* CC_INTERP */ | |
| 1173 | |
| 1174 | |
| 1175 // Lock object | |
| 1176 // | |
| 1177 // Argument - lock_reg points to the BasicObjectLock to be used for locking, | |
| 1178 // it must be initialized with the object to lock | |
| 1179 void InterpreterMacroAssembler::lock_object(Register lock_reg, Register Object) { | |
| 1180 if (UseHeavyMonitors) { | |
| 1181 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 1182 } | |
| 1183 else { | |
| 1184 Register obj_reg = Object; | |
| 1185 Register mark_reg = G4_scratch; | |
| 1186 Register temp_reg = G1_scratch; | |
| 727 | 1187 Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes()); |
| 1188 Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes()); | |
| 0 | 1189 Label done; |
| 1190 | |
| 1191 Label slow_case; | |
| 1192 | |
| 1193 assert_different_registers(lock_reg, obj_reg, mark_reg, temp_reg); | |
| 1194 | |
| 1195 // load markOop from object into mark_reg | |
| 1196 ld_ptr(mark_addr, mark_reg); | |
| 1197 | |
| 1198 if (UseBiasedLocking) { | |
| 1199 biased_locking_enter(obj_reg, mark_reg, temp_reg, done, &slow_case); | |
| 1200 } | |
| 1201 | |
| 1202 // get the address of basicLock on stack that will be stored in the object | |
| 1203 // we need a temporary register here as we do not want to clobber lock_reg | |
| 1204 // (cas clobbers the destination register) | |
| 1205 mov(lock_reg, temp_reg); | |
| 1206 // set mark reg to be (markOop of object | UNLOCK_VALUE) | |
| 1207 or3(mark_reg, markOopDesc::unlocked_value, mark_reg); | |
| 1208 // initialize the box (Must happen before we update the object mark!) | |
| 1209 st_ptr(mark_reg, lock_addr, BasicLock::displaced_header_offset_in_bytes()); | |
| 1210 // compare and exchange object_addr, markOop | 1, stack address of basicLock | |
| 1211 assert(mark_addr.disp() == 0, "cas must take a zero displacement"); | |
| 1212 casx_under_lock(mark_addr.base(), mark_reg, temp_reg, | |
| 1213 (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()); | |
| 1214 | |
| 1215 // if the compare and exchange succeeded we are done (we saw an unlocked object) | |
| 3839 | 1216 cmp_and_brx_short(mark_reg, temp_reg, Assembler::equal, Assembler::pt, done); |
| 0 | 1217 |
| 1218 // We did not see an unlocked object so try the fast recursive case | |
| 1219 | |
| 1220 // Check if owner is self by comparing the value in the markOop of object | |
| 1221 // with the stack pointer | |
| 1222 sub(temp_reg, SP, temp_reg); | |
| 1223 #ifdef _LP64 | |
| 1224 sub(temp_reg, STACK_BIAS, temp_reg); | |
| 1225 #endif | |
| 1226 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant"); | |
| 1227 | |
| 1228 // Composite "andcc" test: | |
| 1229 // (a) %sp -vs- markword proximity check, and, | |
| 1230 // (b) verify mark word LSBs == 0 (Stack-locked). | |
| 1231 // | |
| 1232 // FFFFF003/FFFFFFFFFFFF003 is (markOopDesc::lock_mask_in_place | -os::vm_page_size()) | |
| 1233 // Note that the page size used for %sp proximity testing is arbitrary and is | |
| 1234 // unrelated to the actual MMU page size. We use a 'logical' page size of | |
| 1235 // 4096 bytes. F..FFF003 is designed to fit conveniently in the SIMM13 immediate | |
| 1236 // field of the andcc instruction. | |
| 1237 andcc (temp_reg, 0xFFFFF003, G0) ; | |
| 1238 | |
| 1239 // if condition is true we are done and hence we can store 0 in the displaced | |
| 1240 // header indicating it is a recursive lock and be done | |
| 1241 brx(Assembler::zero, true, Assembler::pt, done); | |
| 1242 delayed()->st_ptr(G0, lock_addr, BasicLock::displaced_header_offset_in_bytes()); | |
| 1243 | |
| 1244 // none of the above fast optimizations worked so we have to get into the | |
| 1245 // slow case of monitor enter | |
| 1246 bind(slow_case); | |
| 1247 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 1248 | |
| 1249 bind(done); | |
| 1250 } | |
| 1251 } | |
| 1252 | |
| 1253 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
| 1254 // | |
| 1255 // Argument - lock_reg points to the BasicObjectLock for lock | |
| 1256 // Throw IllegalMonitorException if object is not locked by current thread | |
| 1257 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
| 1258 if (UseHeavyMonitors) { | |
| 1259 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
| 1260 } else { | |
| 1261 Register obj_reg = G3_scratch; | |
| 1262 Register mark_reg = G4_scratch; | |
| 1263 Register displaced_header_reg = G1_scratch; | |
| 727 | 1264 Address lockobj_addr(lock_reg, BasicObjectLock::obj_offset_in_bytes()); |
| 1265 Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes()); | |
| 0 | 1266 Label done; |
| 1267 | |
| 1268 if (UseBiasedLocking) { | |
| 1269 // load the object out of the BasicObjectLock | |
| 1270 ld_ptr(lockobj_addr, obj_reg); | |
| 1271 biased_locking_exit(mark_addr, mark_reg, done, true); | |
| 1272 st_ptr(G0, lockobj_addr); // free entry | |
| 1273 } | |
| 1274 | |
| 1275 // Test first if we are in the fast recursive case | |
| 727 | 1276 Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes() + BasicLock::displaced_header_offset_in_bytes()); |
| 1277 ld_ptr(lock_addr, displaced_header_reg); | |
| 0 | 1278 br_null(displaced_header_reg, true, Assembler::pn, done); |
| 1279 delayed()->st_ptr(G0, lockobj_addr); // free entry | |
| 1280 | |
| 1281 // See if it is still a light weight lock, if so we just unlock | |
| 1282 // the object and we are done | |
| 1283 | |
| 1284 if (!UseBiasedLocking) { | |
| 1285 // load the object out of the BasicObjectLock | |
| 1286 ld_ptr(lockobj_addr, obj_reg); | |
| 1287 } | |
| 1288 | |
| 1289 // we have the displaced header in displaced_header_reg | |
| 1290 // we expect to see the stack address of the basicLock in case the | |
| 1291 // lock is still a light weight lock (lock_reg) | |
| 1292 assert(mark_addr.disp() == 0, "cas must take a zero displacement"); | |
| 1293 casx_under_lock(mark_addr.base(), lock_reg, displaced_header_reg, | |
| 1294 (address)StubRoutines::Sparc::atomic_memory_operation_lock_addr()); | |
| 1295 cmp(lock_reg, displaced_header_reg); | |
| 1296 brx(Assembler::equal, true, Assembler::pn, done); | |
| 1297 delayed()->st_ptr(G0, lockobj_addr); // free entry | |
| 1298 | |
| 1299 // The lock has been converted into a heavy lock and hence | |
| 1300 // we need to get into the slow case | |
| 1301 | |
| 1302 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
| 1303 | |
| 1304 bind(done); | |
| 1305 } | |
| 1306 } | |
| 1307 | |
| 1308 #ifndef CC_INTERP | |
| 1309 | |
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1310 // Get the method data pointer from the Method* and set the |
| 0 | 1311 // specified register to its value. |
| 1312 | |
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1313 void InterpreterMacroAssembler::set_method_data_pointer() { |
| 0 | 1314 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1315 Label get_continue; | |
| 1316 | |
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1317 ld_ptr(Lmethod, in_bytes(Method::method_data_offset()), ImethodDataPtr); |
| 0 | 1318 test_method_data_pointer(get_continue); |
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1319 add(ImethodDataPtr, in_bytes(MethodData::data_offset()), ImethodDataPtr); |
| 0 | 1320 bind(get_continue); |
| 1321 } | |
| 1322 | |
| 1323 // Set the method data pointer for the current bcp. | |
| 1324 | |
| 1325 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 1326 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1327 Label zero_continue; | |
| 1328 | |
| 1329 // Test MDO to avoid the call if it is NULL. | |
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1330 ld_ptr(Lmethod, in_bytes(Method::method_data_offset()), ImethodDataPtr); |
| 0 | 1331 test_method_data_pointer(zero_continue); |
| 1332 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), Lmethod, Lbcp); | |
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1333 add(ImethodDataPtr, in_bytes(MethodData::data_offset()), ImethodDataPtr); |
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1334 add(ImethodDataPtr, O0, ImethodDataPtr); |
| 0 | 1335 bind(zero_continue); |
| 1336 } | |
| 1337 | |
| 1338 // Test ImethodDataPtr. If it is null, continue at the specified label | |
| 1339 | |
| 1340 void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) { | |
| 1341 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 3839 | 1342 br_null_short(ImethodDataPtr, Assembler::pn, zero_continue); |
| 0 | 1343 } |
| 1344 | |
| 1345 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 1346 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1347 #ifdef ASSERT | |
| 1348 Label verify_continue; | |
| 1349 test_method_data_pointer(verify_continue); | |
| 1350 | |
| 1351 // If the mdp is valid, it will point to a DataLayout header which is | |
| 1352 // consistent with the bcp. The converse is highly probable also. | |
| 1353 lduh(ImethodDataPtr, in_bytes(DataLayout::bci_offset()), G3_scratch); | |
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1354 ld_ptr(Lmethod, Method::const_offset(), O5); |
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1355 add(G3_scratch, in_bytes(ConstMethod::codes_offset()), G3_scratch); |
| 0 | 1356 add(G3_scratch, O5, G3_scratch); |
| 1357 cmp(Lbcp, G3_scratch); | |
| 1358 brx(Assembler::equal, false, Assembler::pt, verify_continue); | |
| 1359 | |
| 1360 Register temp_reg = O5; | |
| 1361 delayed()->mov(ImethodDataPtr, temp_reg); | |
| 1362 // %%% should use call_VM_leaf here? | |
| 1363 //call_VM_leaf(noreg, ..., Lmethod, Lbcp, ImethodDataPtr); | |
| 1364 save_frame_and_mov(sizeof(jdouble) / wordSize, Lmethod, O0, Lbcp, O1); | |
| 727 | 1365 Address d_save(FP, -sizeof(jdouble) + STACK_BIAS); |
| 0 | 1366 stf(FloatRegisterImpl::D, Ftos_d, d_save); |
| 1367 mov(temp_reg->after_save(), O2); | |
| 1368 save_thread(L7_thread_cache); | |
| 1369 call(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), relocInfo::none); | |
| 1370 delayed()->nop(); | |
| 1371 restore_thread(L7_thread_cache); | |
| 1372 ldf(FloatRegisterImpl::D, d_save, Ftos_d); | |
| 1373 restore(); | |
| 1374 bind(verify_continue); | |
| 1375 #endif // ASSERT | |
| 1376 } | |
| 1377 | |
| 1378 void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count, | |
| 1379 Register Rtmp, | |
| 1380 Label &profile_continue) { | |
| 1381 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1382 // Control will flow to "profile_continue" if the counter is less than the | |
| 1383 // limit or if we call profile_method() | |
| 1384 | |
| 1385 Label done; | |
| 1386 | |
| 1387 // if no method data exists, and the counter is high enough, make one | |
| 3839 | 1388 br_notnull_short(ImethodDataPtr, Assembler::pn, done); |
| 0 | 1389 |
| 1390 // Test to see if we should create a method data oop | |
| 727 | 1391 AddressLiteral profile_limit((address) &InvocationCounter::InterpreterProfileLimit); |
| 1392 sethi(profile_limit, Rtmp); | |
| 1393 ld(Rtmp, profile_limit.low10(), Rtmp); | |
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1394 cmp(invocation_count, Rtmp); |
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1395 // Use long branches because call_VM() code and following code generated by |
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1396 // test_backedge_count_for_osr() is large in debug VM. |
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1397 br(Assembler::lessUnsigned, false, Assembler::pn, profile_continue); |
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1398 delayed()->nop(); |
| 0 | 1399 |
| 1400 // Build it now. | |
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1401 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method)); |
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1402 set_method_data_pointer_for_bcp(); |
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1403 ba(profile_continue); |
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1404 delayed()->nop(); |
| 0 | 1405 bind(done); |
| 1406 } | |
| 1407 | |
| 1408 // Store a value at some constant offset from the method data pointer. | |
| 1409 | |
| 1410 void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) { | |
| 1411 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1412 st_ptr(value, ImethodDataPtr, constant); | |
| 1413 } | |
| 1414 | |
| 1415 void InterpreterMacroAssembler::increment_mdp_data_at(Address counter, | |
| 1416 Register bumped_count, | |
| 1417 bool decrement) { | |
| 1418 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1419 | |
| 1420 // Load the counter. | |
| 1421 ld_ptr(counter, bumped_count); | |
| 1422 | |
| 1423 if (decrement) { | |
| 1424 // Decrement the register. Set condition codes. | |
| 1425 subcc(bumped_count, DataLayout::counter_increment, bumped_count); | |
| 1426 | |
| 1427 // If the decrement causes the counter to overflow, stay negative | |
| 1428 Label L; | |
| 1429 brx(Assembler::negative, true, Assembler::pn, L); | |
| 1430 | |
| 1431 // Store the decremented counter, if it is still negative. | |
| 1432 delayed()->st_ptr(bumped_count, counter); | |
| 1433 bind(L); | |
| 1434 } else { | |
| 1435 // Increment the register. Set carry flag. | |
| 1436 addcc(bumped_count, DataLayout::counter_increment, bumped_count); | |
| 1437 | |
| 1438 // If the increment causes the counter to overflow, pull back by 1. | |
| 1439 assert(DataLayout::counter_increment == 1, "subc works"); | |
| 1440 subc(bumped_count, G0, bumped_count); | |
| 1441 | |
| 1442 // Store the incremented counter. | |
| 1443 st_ptr(bumped_count, counter); | |
| 1444 } | |
| 1445 } | |
| 1446 | |
| 1447 // Increment the value at some constant offset from the method data pointer. | |
| 1448 | |
| 1449 void InterpreterMacroAssembler::increment_mdp_data_at(int constant, | |
| 1450 Register bumped_count, | |
| 1451 bool decrement) { | |
| 1452 // Locate the counter at a fixed offset from the mdp: | |
| 727 | 1453 Address counter(ImethodDataPtr, constant); |
| 0 | 1454 increment_mdp_data_at(counter, bumped_count, decrement); |
| 1455 } | |
| 1456 | |
| 1457 // Increment the value at some non-fixed (reg + constant) offset from | |
| 1458 // the method data pointer. | |
| 1459 | |
| 1460 void InterpreterMacroAssembler::increment_mdp_data_at(Register reg, | |
| 1461 int constant, | |
| 1462 Register bumped_count, | |
| 1463 Register scratch2, | |
| 1464 bool decrement) { | |
| 1465 // Add the constant to reg to get the offset. | |
| 1466 add(ImethodDataPtr, reg, scratch2); | |
| 727 | 1467 Address counter(scratch2, constant); |
| 0 | 1468 increment_mdp_data_at(counter, bumped_count, decrement); |
| 1469 } | |
| 1470 | |
| 1471 // Set a flag value at the current method data pointer position. | |
| 1472 // Updates a single byte of the header, to avoid races with other header bits. | |
| 1473 | |
| 1474 void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant, | |
| 1475 Register scratch) { | |
| 1476 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1477 // Load the data header | |
| 1478 ldub(ImethodDataPtr, in_bytes(DataLayout::flags_offset()), scratch); | |
| 1479 | |
| 1480 // Set the flag | |
| 1481 or3(scratch, flag_constant, scratch); | |
| 1482 | |
| 1483 // Store the modified header. | |
| 1484 stb(scratch, ImethodDataPtr, in_bytes(DataLayout::flags_offset())); | |
| 1485 } | |
| 1486 | |
| 1487 // Test the location at some offset from the method data pointer. | |
| 1488 // If it is not equal to value, branch to the not_equal_continue Label. | |
| 1489 // Set condition codes to match the nullness of the loaded value. | |
| 1490 | |
| 1491 void InterpreterMacroAssembler::test_mdp_data_at(int offset, | |
| 1492 Register value, | |
| 1493 Label& not_equal_continue, | |
| 1494 Register scratch) { | |
| 1495 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1496 ld_ptr(ImethodDataPtr, offset, scratch); | |
| 1497 cmp(value, scratch); | |
| 1498 brx(Assembler::notEqual, false, Assembler::pn, not_equal_continue); | |
| 1499 delayed()->tst(scratch); | |
| 1500 } | |
| 1501 | |
| 1502 // Update the method data pointer by the displacement located at some fixed | |
| 1503 // offset from the method data pointer. | |
| 1504 | |
| 1505 void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp, | |
| 1506 Register scratch) { | |
| 1507 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1508 ld_ptr(ImethodDataPtr, offset_of_disp, scratch); | |
| 1509 add(ImethodDataPtr, scratch, ImethodDataPtr); | |
| 1510 } | |
| 1511 | |
| 1512 // Update the method data pointer by the displacement located at the | |
| 1513 // offset (reg + offset_of_disp). | |
| 1514 | |
| 1515 void InterpreterMacroAssembler::update_mdp_by_offset(Register reg, | |
| 1516 int offset_of_disp, | |
| 1517 Register scratch) { | |
| 1518 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1519 add(reg, offset_of_disp, scratch); | |
| 1520 ld_ptr(ImethodDataPtr, scratch, scratch); | |
| 1521 add(ImethodDataPtr, scratch, ImethodDataPtr); | |
| 1522 } | |
| 1523 | |
| 1524 // Update the method data pointer by a simple constant displacement. | |
| 1525 | |
| 1526 void InterpreterMacroAssembler::update_mdp_by_constant(int constant) { | |
| 1527 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1528 add(ImethodDataPtr, constant, ImethodDataPtr); | |
| 1529 } | |
| 1530 | |
| 1531 // Update the method data pointer for a _ret bytecode whose target | |
| 1532 // was not among our cached targets. | |
| 1533 | |
| 1534 void InterpreterMacroAssembler::update_mdp_for_ret(TosState state, | |
| 1535 Register return_bci) { | |
| 1536 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1537 push(state); | |
| 1538 st_ptr(return_bci, l_tmp); // protect return_bci, in case it is volatile | |
| 1539 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); | |
| 1540 ld_ptr(l_tmp, return_bci); | |
| 1541 pop(state); | |
| 1542 } | |
| 1543 | |
| 1544 // Count a taken branch in the bytecodes. | |
| 1545 | |
| 1546 void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) { | |
| 1547 if (ProfileInterpreter) { | |
| 1548 Label profile_continue; | |
| 1549 | |
| 1550 // If no method data exists, go to profile_continue. | |
| 1551 test_method_data_pointer(profile_continue); | |
| 1552 | |
| 1553 // We are taking a branch. Increment the taken count. | |
| 1554 increment_mdp_data_at(in_bytes(JumpData::taken_offset()), bumped_count); | |
| 1555 | |
| 1556 // The method data pointer needs to be updated to reflect the new target. | |
| 1557 update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch); | |
| 1558 bind (profile_continue); | |
| 1559 } | |
| 1560 } | |
| 1561 | |
| 1562 | |
| 1563 // Count a not-taken branch in the bytecodes. | |
| 1564 | |
| 1565 void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch) { | |
| 1566 if (ProfileInterpreter) { | |
| 1567 Label profile_continue; | |
| 1568 | |
| 1569 // If no method data exists, go to profile_continue. | |
| 1570 test_method_data_pointer(profile_continue); | |
| 1571 | |
| 1572 // We are taking a branch. Increment the not taken count. | |
| 1573 increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch); | |
| 1574 | |
| 1575 // The method data pointer needs to be updated to correspond to the | |
| 1576 // next bytecode. | |
| 1577 update_mdp_by_constant(in_bytes(BranchData::branch_data_size())); | |
| 1578 bind (profile_continue); | |
| 1579 } | |
| 1580 } | |
| 1581 | |
| 1582 | |
| 1583 // Count a non-virtual call in the bytecodes. | |
| 1584 | |
| 1585 void InterpreterMacroAssembler::profile_call(Register scratch) { | |
| 1586 if (ProfileInterpreter) { | |
| 1587 Label profile_continue; | |
| 1588 | |
| 1589 // If no method data exists, go to profile_continue. | |
| 1590 test_method_data_pointer(profile_continue); | |
| 1591 | |
| 1592 // We are making a call. Increment the count. | |
| 1593 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
| 1594 | |
| 1595 // The method data pointer needs to be updated to reflect the new target. | |
| 1596 update_mdp_by_constant(in_bytes(CounterData::counter_data_size())); | |
| 1597 bind (profile_continue); | |
| 1598 } | |
| 1599 } | |
| 1600 | |
| 1601 | |
| 1602 // Count a final call in the bytecodes. | |
| 1603 | |
| 1604 void InterpreterMacroAssembler::profile_final_call(Register scratch) { | |
| 1605 if (ProfileInterpreter) { | |
| 1606 Label profile_continue; | |
| 1607 | |
| 1608 // If no method data exists, go to profile_continue. | |
| 1609 test_method_data_pointer(profile_continue); | |
| 1610 | |
| 1611 // We are making a call. Increment the count. | |
| 1612 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
| 1613 | |
| 1614 // The method data pointer needs to be updated to reflect the new target. | |
| 1615 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1616 bind (profile_continue); | |
| 1617 } | |
| 1618 } | |
| 1619 | |
| 1620 | |
| 1621 // Count a virtual call in the bytecodes. | |
| 1622 | |
| 1623 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, | |
| 1503 | 1624 Register scratch, |
| 1625 bool receiver_can_be_null) { | |
| 0 | 1626 if (ProfileInterpreter) { |
| 1627 Label profile_continue; | |
| 1628 | |
| 1629 // If no method data exists, go to profile_continue. | |
| 1630 test_method_data_pointer(profile_continue); | |
| 1631 | |
| 1503 | 1632 |
| 1633 Label skip_receiver_profile; | |
| 1634 if (receiver_can_be_null) { | |
| 1635 Label not_null; | |
| 3839 | 1636 br_notnull_short(receiver, Assembler::pt, not_null); |
| 1503 | 1637 // We are making a call. Increment the count for null receiver. |
| 1638 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
| 3839 | 1639 ba_short(skip_receiver_profile); |
| 1503 | 1640 bind(not_null); |
| 1641 } | |
| 1642 | |
| 0 | 1643 // Record the receiver type. |
|
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1644 record_klass_in_profile(receiver, scratch, true); |
| 1503 | 1645 bind(skip_receiver_profile); |
| 0 | 1646 |
| 1647 // The method data pointer needs to be updated to reflect the new target. | |
| 1648 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1649 bind (profile_continue); | |
| 1650 } | |
| 1651 } | |
| 1652 | |
| 1653 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1654 Register receiver, Register scratch, | |
|
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1655 int start_row, Label& done, bool is_virtual_call) { |
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1656 if (TypeProfileWidth == 0) { |
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1657 if (is_virtual_call) { |
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1658 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); |
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1659 } |
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1660 return; |
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1661 } |
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1662 |
| 0 | 1663 int last_row = VirtualCallData::row_limit() - 1; |
| 1664 assert(start_row <= last_row, "must be work left to do"); | |
| 1665 // Test this row for both the receiver and for null. | |
| 1666 // Take any of three different outcomes: | |
| 1667 // 1. found receiver => increment count and goto done | |
| 1668 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1669 // 3. found something else => keep looking for cases 1 and 2 | |
| 1670 // Case 3 is handled by a recursive call. | |
| 1671 for (int row = start_row; row <= last_row; row++) { | |
| 1672 Label next_test; | |
| 1673 bool test_for_null_also = (row == start_row); | |
| 1674 | |
| 1675 // See if the receiver is receiver[n]. | |
| 1676 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1677 test_mdp_data_at(recvr_offset, receiver, next_test, scratch); | |
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1678 // delayed()->tst(scratch); |
| 0 | 1679 |
| 1680 // The receiver is receiver[n]. Increment count[n]. | |
| 1681 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1682 increment_mdp_data_at(count_offset, scratch); | |
| 3839 | 1683 ba_short(done); |
| 0 | 1684 bind(next_test); |
| 1685 | |
| 1686 if (test_for_null_also) { | |
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1687 Label found_null; |
| 0 | 1688 // Failed the equality check on receiver[n]... Test for null. |
| 1689 if (start_row == last_row) { | |
| 1690 // The only thing left to do is handle the null case. | |
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1691 if (is_virtual_call) { |
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1692 brx(Assembler::zero, false, Assembler::pn, found_null); |
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1693 delayed()->nop(); |
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1694 // Receiver did not match any saved receiver and there is no empty row for it. |
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1695 // Increment total counter to indicate polymorphic case. |
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1696 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); |
| 3839 | 1697 ba_short(done); |
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1698 bind(found_null); |
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1699 } else { |
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1700 brx(Assembler::notZero, false, Assembler::pt, done); |
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1701 delayed()->nop(); |
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1702 } |
| 0 | 1703 break; |
| 1704 } | |
| 1705 // Since null is rare, make it be the branch-taken case. | |
| 1706 brx(Assembler::zero, false, Assembler::pn, found_null); | |
| 1707 delayed()->nop(); | |
| 1708 | |
| 1709 // Put all the "Case 3" tests here. | |
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1710 record_klass_in_profile_helper(receiver, scratch, start_row + 1, done, is_virtual_call); |
| 0 | 1711 |
| 1712 // Found a null. Keep searching for a matching receiver, | |
| 1713 // but remember that this is an empty (unused) slot. | |
| 1714 bind(found_null); | |
| 1715 } | |
| 1716 } | |
| 1717 | |
| 1718 // In the fall-through case, we found no matching receiver, but we | |
| 1719 // observed the receiver[start_row] is NULL. | |
| 1720 | |
| 1721 // Fill in the receiver field and increment the count. | |
| 1722 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1723 set_mdp_data_at(recvr_offset, receiver); | |
| 1724 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 1725 mov(DataLayout::counter_increment, scratch); | |
| 1726 set_mdp_data_at(count_offset, scratch); | |
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1727 if (start_row > 0) { |
| 3839 | 1728 ba_short(done); |
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1729 } |
| 0 | 1730 } |
| 1731 | |
| 1732 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
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1733 Register scratch, bool is_virtual_call) { |
| 0 | 1734 assert(ProfileInterpreter, "must be profiling"); |
| 1735 Label done; | |
| 1736 | |
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1737 record_klass_in_profile_helper(receiver, scratch, 0, done, is_virtual_call); |
| 0 | 1738 |
| 1739 bind (done); | |
| 1740 } | |
| 1741 | |
| 1742 | |
| 1743 // Count a ret in the bytecodes. | |
| 1744 | |
| 1745 void InterpreterMacroAssembler::profile_ret(TosState state, | |
| 1746 Register return_bci, | |
| 1747 Register scratch) { | |
| 1748 if (ProfileInterpreter) { | |
| 1749 Label profile_continue; | |
| 1750 uint row; | |
| 1751 | |
| 1752 // If no method data exists, go to profile_continue. | |
| 1753 test_method_data_pointer(profile_continue); | |
| 1754 | |
| 1755 // Update the total ret count. | |
| 1756 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch); | |
| 1757 | |
| 1758 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1759 Label next_test; | |
| 1760 | |
| 1761 // See if return_bci is equal to bci[n]: | |
| 1762 test_mdp_data_at(in_bytes(RetData::bci_offset(row)), | |
| 1763 return_bci, next_test, scratch); | |
| 1764 | |
| 1765 // return_bci is equal to bci[n]. Increment the count. | |
| 1766 increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch); | |
| 1767 | |
| 1768 // The method data pointer needs to be updated to reflect the new target. | |
| 1769 update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch); | |
| 3839 | 1770 ba_short(profile_continue); |
| 0 | 1771 bind(next_test); |
| 1772 } | |
| 1773 | |
| 1774 update_mdp_for_ret(state, return_bci); | |
| 1775 | |
| 1776 bind (profile_continue); | |
| 1777 } | |
| 1778 } | |
| 1779 | |
| 1780 // Profile an unexpected null in the bytecodes. | |
| 1781 void InterpreterMacroAssembler::profile_null_seen(Register scratch) { | |
| 1782 if (ProfileInterpreter) { | |
| 1783 Label profile_continue; | |
| 1784 | |
| 1785 // If no method data exists, go to profile_continue. | |
| 1786 test_method_data_pointer(profile_continue); | |
| 1787 | |
| 1788 set_mdp_flag_at(BitData::null_seen_byte_constant(), scratch); | |
| 1789 | |
| 1790 // The method data pointer needs to be updated. | |
| 1791 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1792 if (TypeProfileCasts) { | |
| 1793 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1794 } | |
| 1795 update_mdp_by_constant(mdp_delta); | |
| 1796 | |
| 1797 bind (profile_continue); | |
| 1798 } | |
| 1799 } | |
| 1800 | |
| 1801 void InterpreterMacroAssembler::profile_typecheck(Register klass, | |
| 1802 Register scratch) { | |
| 1803 if (ProfileInterpreter) { | |
| 1804 Label profile_continue; | |
| 1805 | |
| 1806 // If no method data exists, go to profile_continue. | |
| 1807 test_method_data_pointer(profile_continue); | |
| 1808 | |
| 1809 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1810 if (TypeProfileCasts) { | |
| 1811 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1812 | |
| 1813 // Record the object type. | |
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1814 record_klass_in_profile(klass, scratch, false); |
| 0 | 1815 } |
| 1816 | |
| 1817 // The method data pointer needs to be updated. | |
| 1818 update_mdp_by_constant(mdp_delta); | |
| 1819 | |
| 1820 bind (profile_continue); | |
| 1821 } | |
| 1822 } | |
| 1823 | |
| 1824 void InterpreterMacroAssembler::profile_typecheck_failed(Register scratch) { | |
| 1825 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1826 Label profile_continue; | |
| 1827 | |
| 1828 // If no method data exists, go to profile_continue. | |
| 1829 test_method_data_pointer(profile_continue); | |
| 1830 | |
| 1831 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1832 // Back up the address, since we have already bumped the mdp. | |
| 1833 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1834 | |
| 1835 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1836 increment_mdp_data_at(count_offset, scratch, true); | |
| 1837 | |
| 1838 bind (profile_continue); | |
| 1839 } | |
| 1840 } | |
| 1841 | |
| 1842 // Count the default case of a switch construct. | |
| 1843 | |
| 1844 void InterpreterMacroAssembler::profile_switch_default(Register scratch) { | |
| 1845 if (ProfileInterpreter) { | |
| 1846 Label profile_continue; | |
| 1847 | |
| 1848 // If no method data exists, go to profile_continue. | |
| 1849 test_method_data_pointer(profile_continue); | |
| 1850 | |
| 1851 // Update the default case count | |
| 1852 increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()), | |
| 1853 scratch); | |
| 1854 | |
| 1855 // The method data pointer needs to be updated. | |
| 1856 update_mdp_by_offset( | |
| 1857 in_bytes(MultiBranchData::default_displacement_offset()), | |
| 1858 scratch); | |
| 1859 | |
| 1860 bind (profile_continue); | |
| 1861 } | |
| 1862 } | |
| 1863 | |
| 1864 // Count the index'th case of a switch construct. | |
| 1865 | |
| 1866 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
| 1867 Register scratch, | |
| 1868 Register scratch2, | |
| 1869 Register scratch3) { | |
| 1870 if (ProfileInterpreter) { | |
| 1871 Label profile_continue; | |
| 1872 | |
| 1873 // If no method data exists, go to profile_continue. | |
| 1874 test_method_data_pointer(profile_continue); | |
| 1875 | |
| 1876 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
| 1877 set(in_bytes(MultiBranchData::per_case_size()), scratch); | |
| 1878 smul(index, scratch, scratch); | |
| 1879 add(scratch, in_bytes(MultiBranchData::case_array_offset()), scratch); | |
| 1880 | |
| 1881 // Update the case count | |
| 1882 increment_mdp_data_at(scratch, | |
| 1883 in_bytes(MultiBranchData::relative_count_offset()), | |
| 1884 scratch2, | |
| 1885 scratch3); | |
| 1886 | |
| 1887 // The method data pointer needs to be updated. | |
| 1888 update_mdp_by_offset(scratch, | |
| 1889 in_bytes(MultiBranchData::relative_displacement_offset()), | |
| 1890 scratch2); | |
| 1891 | |
| 1892 bind (profile_continue); | |
| 1893 } | |
| 1894 } | |
| 1895 | |
| 1896 // add a InterpMonitorElem to stack (see frame_sparc.hpp) | |
| 1897 | |
| 1898 void InterpreterMacroAssembler::add_monitor_to_stack( bool stack_is_empty, | |
| 1899 Register Rtemp, | |
| 1900 Register Rtemp2 ) { | |
| 1901 | |
| 1902 Register Rlimit = Lmonitors; | |
| 1903 const jint delta = frame::interpreter_frame_monitor_size() * wordSize; | |
| 1904 assert( (delta & LongAlignmentMask) == 0, | |
| 1905 "sizeof BasicObjectLock must be even number of doublewords"); | |
| 1906 | |
| 1907 sub( SP, delta, SP); | |
| 1908 sub( Lesp, delta, Lesp); | |
| 1909 sub( Lmonitors, delta, Lmonitors); | |
| 1910 | |
| 1911 if (!stack_is_empty) { | |
| 1912 | |
| 1913 // must copy stack contents down | |
| 1914 | |
| 1915 Label start_copying, next; | |
| 1916 | |
| 1917 // untested("monitor stack expansion"); | |
| 1918 compute_stack_base(Rtemp); | |
| 3839 | 1919 ba(start_copying); |
| 1920 delayed()->cmp(Rtemp, Rlimit); // done? duplicated below | |
| 0 | 1921 |
| 1922 // note: must copy from low memory upwards | |
| 1923 // On entry to loop, | |
| 1924 // Rtemp points to new base of stack, Lesp points to new end of stack (1 past TOS) | |
| 1925 // Loop mutates Rtemp | |
| 1926 | |
| 1927 bind( next); | |
| 1928 | |
| 1929 st_ptr(Rtemp2, Rtemp, 0); | |
| 1930 inc(Rtemp, wordSize); | |
| 1931 cmp(Rtemp, Rlimit); // are we done? (duplicated above) | |
| 1932 | |
| 1933 bind( start_copying ); | |
| 1934 | |
| 1935 brx( notEqual, true, pn, next ); | |
| 1936 delayed()->ld_ptr( Rtemp, delta, Rtemp2 ); | |
| 1937 | |
| 1938 // done copying stack | |
| 1939 } | |
| 1940 } | |
| 1941 | |
| 1942 // Locals | |
| 1943 void InterpreterMacroAssembler::access_local_ptr( Register index, Register dst ) { | |
| 1944 assert_not_delayed(); | |
| 1506 | 1945 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 1946 sub(Llocals, index, index); |
| 1506 | 1947 ld_ptr(index, 0, dst); |
| 0 | 1948 // Note: index must hold the effective address--the iinc template uses it |
| 1949 } | |
| 1950 | |
| 1951 // Just like access_local_ptr but the tag is a returnAddress | |
| 1952 void InterpreterMacroAssembler::access_local_returnAddress(Register index, | |
| 1953 Register dst ) { | |
| 1954 assert_not_delayed(); | |
| 1506 | 1955 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 1956 sub(Llocals, index, index); |
| 1506 | 1957 ld_ptr(index, 0, dst); |
| 0 | 1958 } |
| 1959 | |
| 1960 void InterpreterMacroAssembler::access_local_int( Register index, Register dst ) { | |
| 1961 assert_not_delayed(); | |
| 1506 | 1962 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 1963 sub(Llocals, index, index); |
| 1506 | 1964 ld(index, 0, dst); |
| 0 | 1965 // Note: index must hold the effective address--the iinc template uses it |
| 1966 } | |
| 1967 | |
| 1968 | |
| 1969 void InterpreterMacroAssembler::access_local_long( Register index, Register dst ) { | |
| 1970 assert_not_delayed(); | |
| 1506 | 1971 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 1972 sub(Llocals, index, index); |
| 1973 // First half stored at index n+1 (which grows down from Llocals[n]) | |
| 1974 load_unaligned_long(index, Interpreter::local_offset_in_bytes(1), dst); | |
| 1975 } | |
| 1976 | |
| 1977 | |
| 1978 void InterpreterMacroAssembler::access_local_float( Register index, FloatRegister dst ) { | |
| 1979 assert_not_delayed(); | |
| 1506 | 1980 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 1981 sub(Llocals, index, index); |
| 1506 | 1982 ldf(FloatRegisterImpl::S, index, 0, dst); |
| 0 | 1983 } |
| 1984 | |
| 1985 | |
| 1986 void InterpreterMacroAssembler::access_local_double( Register index, FloatRegister dst ) { | |
| 1987 assert_not_delayed(); | |
| 1506 | 1988 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 1989 sub(Llocals, index, index); |
| 1990 load_unaligned_double(index, Interpreter::local_offset_in_bytes(1), dst); | |
| 1991 } | |
| 1992 | |
| 1993 | |
| 1994 #ifdef ASSERT | |
| 1995 void InterpreterMacroAssembler::check_for_regarea_stomp(Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1) { | |
| 1996 Label L; | |
| 1997 | |
| 1998 assert(Rindex != Rscratch, "Registers cannot be same"); | |
| 1999 assert(Rindex != Rscratch1, "Registers cannot be same"); | |
| 2000 assert(Rlimit != Rscratch, "Registers cannot be same"); | |
| 2001 assert(Rlimit != Rscratch1, "Registers cannot be same"); | |
| 2002 assert(Rscratch1 != Rscratch, "Registers cannot be same"); | |
| 2003 | |
| 2004 // untested("reg area corruption"); | |
| 2005 add(Rindex, offset, Rscratch); | |
| 2006 add(Rlimit, 64 + STACK_BIAS, Rscratch1); | |
| 3839 | 2007 cmp_and_brx_short(Rscratch, Rscratch1, Assembler::greaterEqualUnsigned, pn, L); |
| 0 | 2008 stop("regsave area is being clobbered"); |
| 2009 bind(L); | |
| 2010 } | |
| 2011 #endif // ASSERT | |
| 2012 | |
| 2013 | |
| 2014 void InterpreterMacroAssembler::store_local_int( Register index, Register src ) { | |
| 2015 assert_not_delayed(); | |
| 1506 | 2016 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 2017 sub(Llocals, index, index); |
| 1506 | 2018 debug_only(check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch);) |
| 2019 st(src, index, 0); | |
| 0 | 2020 } |
| 2021 | |
| 1506 | 2022 void InterpreterMacroAssembler::store_local_ptr( Register index, Register src ) { |
| 0 | 2023 assert_not_delayed(); |
| 1506 | 2024 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 2025 sub(Llocals, index, index); |
| 1506 | 2026 #ifdef ASSERT |
| 2027 check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch); | |
| 2028 #endif | |
| 2029 st_ptr(src, index, 0); | |
| 0 | 2030 } |
| 2031 | |
| 2032 | |
| 2033 | |
| 1506 | 2034 void InterpreterMacroAssembler::store_local_ptr( int n, Register src ) { |
| 2035 st_ptr(src, Llocals, Interpreter::local_offset_in_bytes(n)); | |
| 0 | 2036 } |
| 2037 | |
| 2038 void InterpreterMacroAssembler::store_local_long( Register index, Register src ) { | |
| 2039 assert_not_delayed(); | |
| 1506 | 2040 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 2041 sub(Llocals, index, index); |
| 1506 | 2042 #ifdef ASSERT |
| 0 | 2043 check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch); |
| 1506 | 2044 #endif |
| 0 | 2045 store_unaligned_long(src, index, Interpreter::local_offset_in_bytes(1)); // which is n+1 |
| 2046 } | |
| 2047 | |
| 2048 | |
| 2049 void InterpreterMacroAssembler::store_local_float( Register index, FloatRegister src ) { | |
| 2050 assert_not_delayed(); | |
| 1506 | 2051 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 2052 sub(Llocals, index, index); |
| 1506 | 2053 #ifdef ASSERT |
| 2054 check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch); | |
| 2055 #endif | |
| 2056 stf(FloatRegisterImpl::S, src, index, 0); | |
| 0 | 2057 } |
| 2058 | |
| 2059 | |
| 2060 void InterpreterMacroAssembler::store_local_double( Register index, FloatRegister src ) { | |
| 2061 assert_not_delayed(); | |
| 1506 | 2062 sll(index, Interpreter::logStackElementSize, index); |
| 0 | 2063 sub(Llocals, index, index); |
| 1506 | 2064 #ifdef ASSERT |
| 0 | 2065 check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch); |
| 1506 | 2066 #endif |
| 0 | 2067 store_unaligned_double(src, index, Interpreter::local_offset_in_bytes(1)); |
| 2068 } | |
| 2069 | |
| 2070 | |
| 2071 int InterpreterMacroAssembler::top_most_monitor_byte_offset() { | |
| 2072 const jint delta = frame::interpreter_frame_monitor_size() * wordSize; | |
| 2073 int rounded_vm_local_words = ::round_to(frame::interpreter_frame_vm_local_words, WordsPerLong); | |
| 2074 return ((-rounded_vm_local_words * wordSize) - delta ) + STACK_BIAS; | |
| 2075 } | |
| 2076 | |
| 2077 | |
| 2078 Address InterpreterMacroAssembler::top_most_monitor() { | |
| 727 | 2079 return Address(FP, top_most_monitor_byte_offset()); |
| 0 | 2080 } |
| 2081 | |
| 2082 | |
| 2083 void InterpreterMacroAssembler::compute_stack_base( Register Rdest ) { | |
| 2084 add( Lesp, wordSize, Rdest ); | |
| 2085 } | |
| 2086 | |
| 2087 #endif /* CC_INTERP */ | |
| 2088 | |
| 2089 void InterpreterMacroAssembler::increment_invocation_counter( Register Rtmp, Register Rtmp2 ) { | |
| 2090 assert(UseCompiler, "incrementing must be useful"); | |
| 2091 #ifdef CC_INTERP | |
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2092 Address inv_counter(G5_method, Method::invocation_counter_offset() + |
| 727 | 2093 InvocationCounter::counter_offset()); |
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2094 Address be_counter (G5_method, Method::backedge_counter_offset() + |
| 727 | 2095 InvocationCounter::counter_offset()); |
| 0 | 2096 #else |
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2097 Address inv_counter(Lmethod, Method::invocation_counter_offset() + |
| 727 | 2098 InvocationCounter::counter_offset()); |
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2099 Address be_counter (Lmethod, Method::backedge_counter_offset() + |
| 727 | 2100 InvocationCounter::counter_offset()); |
| 0 | 2101 #endif /* CC_INTERP */ |
| 2102 int delta = InvocationCounter::count_increment; | |
| 2103 | |
| 2104 // Load each counter in a register | |
| 2105 ld( inv_counter, Rtmp ); | |
| 2106 ld( be_counter, Rtmp2 ); | |
| 2107 | |
| 2108 assert( is_simm13( delta ), " delta too large."); | |
| 2109 | |
| 2110 // Add the delta to the invocation counter and store the result | |
| 2111 add( Rtmp, delta, Rtmp ); | |
| 2112 | |
| 2113 // Mask the backedge counter | |
| 2114 and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 ); | |
| 2115 | |
| 2116 // Store value | |
| 2117 st( Rtmp, inv_counter); | |
| 2118 | |
| 2119 // Add invocation counter + backedge counter | |
| 2120 add( Rtmp, Rtmp2, Rtmp); | |
| 2121 | |
| 2122 // Note that this macro must leave the backedge_count + invocation_count in Rtmp! | |
| 2123 } | |
| 2124 | |
| 2125 void InterpreterMacroAssembler::increment_backedge_counter( Register Rtmp, Register Rtmp2 ) { | |
| 2126 assert(UseCompiler, "incrementing must be useful"); | |
| 2127 #ifdef CC_INTERP | |
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2128 Address be_counter (G5_method, Method::backedge_counter_offset() + |
| 727 | 2129 InvocationCounter::counter_offset()); |
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2130 Address inv_counter(G5_method, Method::invocation_counter_offset() + |
| 727 | 2131 InvocationCounter::counter_offset()); |
| 0 | 2132 #else |
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2133 Address be_counter (Lmethod, Method::backedge_counter_offset() + |
| 727 | 2134 InvocationCounter::counter_offset()); |
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2135 Address inv_counter(Lmethod, Method::invocation_counter_offset() + |
| 727 | 2136 InvocationCounter::counter_offset()); |
| 0 | 2137 #endif /* CC_INTERP */ |
| 2138 int delta = InvocationCounter::count_increment; | |
| 2139 // Load each counter in a register | |
| 2140 ld( be_counter, Rtmp ); | |
| 2141 ld( inv_counter, Rtmp2 ); | |
| 2142 | |
| 2143 // Add the delta to the backedge counter | |
| 2144 add( Rtmp, delta, Rtmp ); | |
| 2145 | |
| 2146 // Mask the invocation counter, add to backedge counter | |
| 2147 and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 ); | |
| 2148 | |
| 2149 // and store the result to memory | |
| 2150 st( Rtmp, be_counter ); | |
| 2151 | |
| 2152 // Add backedge + invocation counter | |
| 2153 add( Rtmp, Rtmp2, Rtmp ); | |
| 2154 | |
| 2155 // Note that this macro must leave backedge_count + invocation_count in Rtmp! | |
| 2156 } | |
| 2157 | |
| 2158 #ifndef CC_INTERP | |
| 2159 void InterpreterMacroAssembler::test_backedge_count_for_osr( Register backedge_count, | |
| 2160 Register branch_bcp, | |
| 2161 Register Rtmp ) { | |
| 2162 Label did_not_overflow; | |
| 2163 Label overflow_with_error; | |
| 2164 assert_different_registers(backedge_count, Rtmp, branch_bcp); | |
| 2165 assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr"); | |
| 2166 | |
| 727 | 2167 AddressLiteral limit(&InvocationCounter::InterpreterBackwardBranchLimit); |
| 0 | 2168 load_contents(limit, Rtmp); |
| 3839 | 2169 cmp_and_br_short(backedge_count, Rtmp, Assembler::lessUnsigned, Assembler::pt, did_not_overflow); |
| 0 | 2170 |
| 2171 // When ProfileInterpreter is on, the backedge_count comes from the | |
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2172 // MethodData*, which value does not get reset on the call to |
| 0 | 2173 // frequency_counter_overflow(). To avoid excessive calls to the overflow |
| 2174 // routine while the method is being compiled, add a second test to make sure | |
| 2175 // the overflow function is called only once every overflow_frequency. | |
| 2176 if (ProfileInterpreter) { | |
| 2177 const int overflow_frequency = 1024; | |
| 2178 andcc(backedge_count, overflow_frequency-1, Rtmp); | |
| 2179 brx(Assembler::notZero, false, Assembler::pt, did_not_overflow); | |
| 2180 delayed()->nop(); | |
| 2181 } | |
| 2182 | |
| 2183 // overflow in loop, pass branch bytecode | |
| 2184 set(6,Rtmp); | |
| 2185 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, Rtmp); | |
| 2186 | |
| 2187 // Was an OSR adapter generated? | |
| 2188 // O0 = osr nmethod | |
| 3839 | 2189 br_null_short(O0, Assembler::pn, overflow_with_error); |
| 0 | 2190 |
| 2191 // Has the nmethod been invalidated already? | |
| 2192 ld(O0, nmethod::entry_bci_offset(), O2); | |
| 3839 | 2193 cmp_and_br_short(O2, InvalidOSREntryBci, Assembler::equal, Assembler::pn, overflow_with_error); |
| 0 | 2194 |
| 2195 // migrate the interpreter frame off of the stack | |
| 2196 | |
| 2197 mov(G2_thread, L7); | |
| 2198 // save nmethod | |
| 2199 mov(O0, L6); | |
| 2200 set_last_Java_frame(SP, noreg); | |
| 2201 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), L7); | |
| 2202 reset_last_Java_frame(); | |
| 2203 mov(L7, G2_thread); | |
| 2204 | |
| 2205 // move OSR nmethod to I1 | |
| 2206 mov(L6, I1); | |
| 2207 | |
| 2208 // OSR buffer to I0 | |
| 2209 mov(O0, I0); | |
| 2210 | |
| 2211 // remove the interpreter frame | |
| 2212 restore(I5_savedSP, 0, SP); | |
| 2213 | |
| 2214 // Jump to the osr code. | |
| 2215 ld_ptr(O1, nmethod::osr_entry_point_offset(), O2); | |
| 2216 jmp(O2, G0); | |
| 2217 delayed()->nop(); | |
| 2218 | |
| 2219 bind(overflow_with_error); | |
| 2220 | |
| 2221 bind(did_not_overflow); | |
| 2222 } | |
| 2223 | |
| 2224 | |
| 2225 | |
| 2226 void InterpreterMacroAssembler::interp_verify_oop(Register reg, TosState state, const char * file, int line) { | |
| 2227 if (state == atos) { MacroAssembler::_verify_oop(reg, "broken oop ", file, line); } | |
| 2228 } | |
| 2229 | |
| 2230 | |
| 2231 // local helper function for the verify_oop_or_return_address macro | |
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2232 static bool verify_return_address(Method* m, int bci) { |
| 0 | 2233 #ifndef PRODUCT |
| 2234 address pc = (address)(m->constMethod()) | |
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2235 + in_bytes(ConstMethod::codes_offset()) + bci; |
| 0 | 2236 // assume it is a valid return address if it is inside m and is preceded by a jsr |
| 2237 if (!m->contains(pc)) return false; | |
| 2238 address jsr_pc; | |
| 2239 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr); | |
| 2240 if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true; | |
| 2241 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w); | |
| 2242 if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true; | |
| 2243 #endif // PRODUCT | |
| 2244 return false; | |
| 2245 } | |
| 2246 | |
| 2247 | |
| 2248 void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) { | |
| 2249 if (!VerifyOops) return; | |
| 2250 // the VM documentation for the astore[_wide] bytecode allows | |
| 2251 // the TOS to be not only an oop but also a return address | |
| 2252 Label test; | |
| 2253 Label skip; | |
| 2254 // See if it is an address (in the current method): | |
| 2255 | |
| 2256 mov(reg, Rtmp); | |
| 2257 const int log2_bytecode_size_limit = 16; | |
| 2258 srl(Rtmp, log2_bytecode_size_limit, Rtmp); | |
| 3839 | 2259 br_notnull_short( Rtmp, pt, test ); |
| 0 | 2260 |
| 2261 // %%% should use call_VM_leaf here? | |
| 2262 save_frame_and_mov(0, Lmethod, O0, reg, O1); | |
| 2263 save_thread(L7_thread_cache); | |
| 2264 call(CAST_FROM_FN_PTR(address,verify_return_address), relocInfo::none); | |
| 2265 delayed()->nop(); | |
| 2266 restore_thread(L7_thread_cache); | |
| 2267 br_notnull( O0, false, pt, skip ); | |
| 2268 delayed()->restore(); | |
| 2269 | |
| 2270 // Perform a more elaborate out-of-line call | |
| 2271 // Not an address; verify it: | |
| 2272 bind(test); | |
| 2273 verify_oop(reg); | |
| 2274 bind(skip); | |
| 2275 } | |
| 2276 | |
| 2277 | |
| 2278 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 2279 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
| 2280 } | |
| 2281 #endif /* CC_INTERP */ | |
| 2282 | |
| 2283 // Inline assembly for: | |
| 2284 // | |
| 2285 // if (thread is in interp_only_mode) { | |
| 2286 // InterpreterRuntime::post_method_entry(); | |
| 2287 // } | |
| 2288 // if (DTraceMethodProbes) { | |
| 605 | 2289 // SharedRuntime::dtrace_method_entry(method, receiver); |
| 0 | 2290 // } |
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2291 // if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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2292 // SharedRuntime::rc_trace_method_entry(method, receiver); |
| 0 | 2293 // } |
| 2294 | |
| 2295 void InterpreterMacroAssembler::notify_method_entry() { | |
| 2296 | |
| 2297 // C++ interpreter only uses this for native methods. | |
| 2298 | |
| 2299 // Whenever JVMTI puts a thread in interp_only_mode, method | |
| 2300 // entry/exit events are sent for that thread to track stack | |
| 2301 // depth. If it is possible to enter interp_only_mode we add | |
| 2302 // the code to check if the event should be sent. | |
| 2303 if (JvmtiExport::can_post_interpreter_events()) { | |
| 2304 Label L; | |
| 2305 Register temp_reg = O5; | |
| 727 | 2306 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
| 0 | 2307 ld(interp_only, temp_reg); |
| 3839 | 2308 cmp_and_br_short(temp_reg, 0, equal, pt, L); |
| 0 | 2309 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); |
| 2310 bind(L); | |
| 2311 } | |
| 2312 | |
| 2313 { | |
| 2314 Register temp_reg = O5; | |
| 2315 SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero); | |
| 2316 call_VM_leaf(noreg, | |
| 2317 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), | |
| 2318 G2_thread, Lmethod); | |
| 2319 } | |
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2320 |
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2321 // RedefineClasses() tracing support for obsolete method entry |
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2322 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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2323 call_VM_leaf(noreg, |
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2324 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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2325 G2_thread, Lmethod); |
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2326 } |
| 0 | 2327 } |
| 2328 | |
| 2329 | |
| 2330 // Inline assembly for: | |
| 2331 // | |
| 2332 // if (thread is in interp_only_mode) { | |
| 2333 // // save result | |
| 2334 // InterpreterRuntime::post_method_exit(); | |
| 2335 // // restore result | |
| 2336 // } | |
| 2337 // if (DTraceMethodProbes) { | |
| 2338 // SharedRuntime::dtrace_method_exit(thread, method); | |
| 2339 // } | |
| 2340 // | |
| 2341 // Native methods have their result stored in d_tmp and l_tmp | |
| 2342 // Java methods have their result stored in the expression stack | |
| 2343 | |
| 2344 void InterpreterMacroAssembler::notify_method_exit(bool is_native_method, | |
| 2345 TosState state, | |
| 2346 NotifyMethodExitMode mode) { | |
| 2347 // C++ interpreter only uses this for native methods. | |
| 2348 | |
| 2349 // Whenever JVMTI puts a thread in interp_only_mode, method | |
| 2350 // entry/exit events are sent for that thread to track stack | |
| 2351 // depth. If it is possible to enter interp_only_mode we add | |
| 2352 // the code to check if the event should be sent. | |
| 2353 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
| 2354 Label L; | |
| 2355 Register temp_reg = O5; | |
| 727 | 2356 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset()); |
| 0 | 2357 ld(interp_only, temp_reg); |
| 3839 | 2358 cmp_and_br_short(temp_reg, 0, equal, pt, L); |
| 0 | 2359 |
| 2360 // Note: frame::interpreter_frame_result has a dependency on how the | |
| 2361 // method result is saved across the call to post_method_exit. For | |
| 2362 // native methods it assumes the result registers are saved to | |
| 2363 // l_scratch and d_scratch. If this changes then the interpreter_frame_result | |
| 2364 // implementation will need to be updated too. | |
| 2365 | |
| 2366 save_return_value(state, is_native_method); | |
| 2367 call_VM(noreg, | |
| 2368 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
| 2369 restore_return_value(state, is_native_method); | |
| 2370 bind(L); | |
| 2371 } | |
| 2372 | |
| 2373 { | |
| 2374 Register temp_reg = O5; | |
| 2375 // Dtrace notification | |
| 2376 SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero); | |
| 2377 save_return_value(state, is_native_method); | |
| 2378 call_VM_leaf( | |
| 2379 noreg, | |
| 2380 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
| 2381 G2_thread, Lmethod); | |
| 2382 restore_return_value(state, is_native_method); | |
| 2383 } | |
| 2384 } | |
| 2385 | |
| 2386 void InterpreterMacroAssembler::save_return_value(TosState state, bool is_native_call) { | |
| 2387 #ifdef CC_INTERP | |
| 2388 // result potentially in O0/O1: save it across calls | |
| 2389 stf(FloatRegisterImpl::D, F0, STATE(_native_fresult)); | |
| 2390 #ifdef _LP64 | |
| 2391 stx(O0, STATE(_native_lresult)); | |
| 2392 #else | |
| 2393 std(O0, STATE(_native_lresult)); | |
| 2394 #endif | |
| 2395 #else // CC_INTERP | |
| 2396 if (is_native_call) { | |
| 2397 stf(FloatRegisterImpl::D, F0, d_tmp); | |
| 2398 #ifdef _LP64 | |
| 2399 stx(O0, l_tmp); | |
| 2400 #else | |
| 2401 std(O0, l_tmp); | |
| 2402 #endif | |
| 2403 } else { | |
| 2404 push(state); | |
| 2405 } | |
| 2406 #endif // CC_INTERP | |
| 2407 } | |
| 2408 | |
| 2409 void InterpreterMacroAssembler::restore_return_value( TosState state, bool is_native_call) { | |
| 2410 #ifdef CC_INTERP | |
| 2411 ldf(FloatRegisterImpl::D, STATE(_native_fresult), F0); | |
| 2412 #ifdef _LP64 | |
| 2413 ldx(STATE(_native_lresult), O0); | |
| 2414 #else | |
| 2415 ldd(STATE(_native_lresult), O0); | |
| 2416 #endif | |
| 2417 #else // CC_INTERP | |
| 2418 if (is_native_call) { | |
| 2419 ldf(FloatRegisterImpl::D, d_tmp, F0); | |
| 2420 #ifdef _LP64 | |
| 2421 ldx(l_tmp, O0); | |
| 2422 #else | |
| 2423 ldd(l_tmp, O0); | |
| 2424 #endif | |
| 2425 } else { | |
| 2426 pop(state); | |
| 2427 } | |
| 2428 #endif // CC_INTERP | |
| 2429 } | |
| 1783 | 2430 |
| 2431 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
| 2432 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
| 2433 int increment, int mask, | |
| 2434 Register scratch1, Register scratch2, | |
| 2435 Condition cond, Label *where) { | |
| 2436 ld(counter_addr, scratch1); | |
| 2437 add(scratch1, increment, scratch1); | |
| 2438 if (is_simm13(mask)) { | |
| 2439 andcc(scratch1, mask, G0); | |
| 2440 } else { | |
| 2441 set(mask, scratch2); | |
| 2442 andcc(scratch1, scratch2, G0); | |
| 2443 } | |
| 2444 br(cond, false, Assembler::pn, *where); | |
| 2445 delayed()->st(scratch1, counter_addr); | |
| 2446 } |