Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 6266:1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
6984705: JSR 292 method handle creation should not go through JNI
Summary: remove assembly code for JDK 7 chained method handles
Reviewed-by: jrose, twisti, kvn, mhaupt
Contributed-by: John Rose <john.r.rose@oracle.com>, Christian Thalinger <christian.thalinger@oracle.com>, Michael Haupt <michael.haupt@oracle.com>
| author | twisti |
|---|---|
| date | Tue, 24 Jul 2012 10:51:00 -0700 |
| parents | f08d439fab8c |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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_x86_32.hpp" | |
| 27 #include "interpreter/interpreter.hpp" | |
| 28 #include "interpreter/interpreterRuntime.hpp" | |
| 29 #include "oops/arrayOop.hpp" | |
| 30 #include "oops/markOop.hpp" | |
| 31 #include "oops/methodDataOop.hpp" | |
| 32 #include "oops/methodOop.hpp" | |
| 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" | |
| 39 #ifdef TARGET_OS_FAMILY_linux | |
| 40 # include "thread_linux.inline.hpp" | |
| 41 #endif | |
| 42 #ifdef TARGET_OS_FAMILY_solaris | |
| 43 # include "thread_solaris.inline.hpp" | |
| 44 #endif | |
| 45 #ifdef TARGET_OS_FAMILY_windows | |
| 46 # include "thread_windows.inline.hpp" | |
| 47 #endif | |
| 3960 | 48 #ifdef TARGET_OS_FAMILY_bsd |
| 49 # include "thread_bsd.inline.hpp" | |
| 50 #endif | |
| 0 | 51 |
| 52 | |
| 53 // Implementation of InterpreterMacroAssembler | |
| 54 #ifdef CC_INTERP | |
| 55 void InterpreterMacroAssembler::get_method(Register reg) { | |
| 304 | 56 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize))); |
| 57 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); | |
| 0 | 58 } |
| 59 #endif // CC_INTERP | |
| 60 | |
| 61 | |
| 62 #ifndef CC_INTERP | |
| 63 void InterpreterMacroAssembler::call_VM_leaf_base( | |
| 64 address entry_point, | |
| 65 int number_of_arguments | |
| 66 ) { | |
| 67 // interpreter specific | |
| 68 // | |
| 69 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer | |
| 70 // since these are callee saved registers and no blocking/ | |
| 71 // GC can happen in leaf calls. | |
| 72 // Further Note: DO NOT save/restore bcp/locals. If a caller has | |
| 73 // already saved them so that it can use rsi/rdi as temporaries | |
| 74 // then a save/restore here will DESTROY the copy the caller | |
| 75 // saved! There used to be a save_bcp() that only happened in | |
| 76 // the ASSERT path (no restore_bcp). Which caused bizarre failures | |
| 77 // when jvm built with ASSERTs. | |
| 78 #ifdef ASSERT | |
| 79 { Label L; | |
| 304 | 80 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 81 jcc(Assembler::equal, L); |
| 82 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL"); | |
| 83 bind(L); | |
| 84 } | |
| 85 #endif | |
| 86 // super call | |
| 87 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
| 88 // interpreter specific | |
| 89 | |
| 90 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals | |
| 91 // but since they may not have been saved (and we don't want to | |
| 92 // save them here (see note above) the assert is invalid. | |
| 93 } | |
| 94 | |
| 95 | |
| 96 void InterpreterMacroAssembler::call_VM_base( | |
| 97 Register oop_result, | |
| 98 Register java_thread, | |
| 99 Register last_java_sp, | |
| 100 address entry_point, | |
| 101 int number_of_arguments, | |
| 102 bool check_exceptions | |
| 103 ) { | |
| 104 #ifdef ASSERT | |
| 105 { Label L; | |
| 304 | 106 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 107 jcc(Assembler::equal, L); |
| 108 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL"); | |
| 109 bind(L); | |
| 110 } | |
| 111 #endif /* ASSERT */ | |
| 112 // interpreter specific | |
| 113 // | |
| 114 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
| 115 // really make a difference for these runtime calls, since they are | |
| 116 // slow anyway. Btw., bcp must be saved/restored since it may change | |
| 117 // due to GC. | |
| 118 assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
| 119 save_bcp(); | |
| 120 // super call | |
| 121 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions); | |
| 122 // interpreter specific | |
| 123 restore_bcp(); | |
| 124 restore_locals(); | |
| 125 } | |
| 126 | |
| 127 | |
| 128 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
| 129 if (JvmtiExport::can_pop_frame()) { | |
| 130 Label L; | |
| 131 // Initiate popframe handling only if it is not already being processed. If the flag | |
| 132 // has the popframe_processing bit set, it means that this code is called *during* popframe | |
| 133 // handling - we don't want to reenter. | |
| 134 Register pop_cond = java_thread; // Not clear if any other register is available... | |
| 135 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset())); | |
| 136 testl(pop_cond, JavaThread::popframe_pending_bit); | |
| 137 jcc(Assembler::zero, L); | |
| 138 testl(pop_cond, JavaThread::popframe_processing_bit); | |
| 139 jcc(Assembler::notZero, L); | |
| 140 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
| 141 // address of the same-named entrypoint in the generated interpreter code. | |
| 142 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
| 143 jmp(rax); | |
| 144 bind(L); | |
| 145 get_thread(java_thread); | |
| 146 } | |
| 147 } | |
| 148 | |
| 149 | |
| 150 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
| 151 get_thread(rcx); | |
| 152 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset())); | |
| 153 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset()); | |
| 154 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset()); | |
| 155 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset()); | |
| 156 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset() | |
| 157 + in_ByteSize(wordSize)); | |
| 158 switch (state) { | |
| 304 | 159 case atos: movptr(rax, oop_addr); |
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160 movptr(oop_addr, NULL_WORD); |
| 0 | 161 verify_oop(rax, state); break; |
| 304 | 162 case ltos: |
| 163 movl(rdx, val_addr1); // fall through | |
| 0 | 164 case btos: // fall through |
| 165 case ctos: // fall through | |
| 166 case stos: // fall through | |
| 167 case itos: movl(rax, val_addr); break; | |
| 168 case ftos: fld_s(val_addr); break; | |
| 169 case dtos: fld_d(val_addr); break; | |
| 170 case vtos: /* nothing to do */ break; | |
| 171 default : ShouldNotReachHere(); | |
| 172 } | |
| 173 // Clean up tos value in the thread object | |
| 304 | 174 movl(tos_addr, (int32_t) ilgl); |
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175 movptr(val_addr, NULL_WORD); |
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176 NOT_LP64(movptr(val_addr1, NULL_WORD)); |
| 0 | 177 } |
| 178 | |
| 179 | |
| 180 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
| 181 if (JvmtiExport::can_force_early_return()) { | |
| 182 Label L; | |
| 183 Register tmp = java_thread; | |
| 304 | 184 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset())); |
| 185 testptr(tmp, tmp); | |
| 0 | 186 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
| 187 | |
| 188 // Initiate earlyret handling only if it is not already being processed. | |
| 189 // If the flag has the earlyret_processing bit set, it means that this code | |
| 190 // is called *during* earlyret handling - we don't want to reenter. | |
| 191 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset())); | |
| 192 cmpl(tmp, JvmtiThreadState::earlyret_pending); | |
| 193 jcc(Assembler::notEqual, L); | |
| 194 | |
| 195 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
| 196 // same-named entrypoint in the generated interpreter code. | |
| 197 get_thread(java_thread); | |
| 304 | 198 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 199 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset())); |
| 200 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1); | |
| 201 jmp(rax); | |
| 202 bind(L); | |
| 203 get_thread(java_thread); | |
| 204 } | |
| 205 } | |
| 206 | |
| 207 | |
| 208 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) { | |
| 209 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
| 210 movl(reg, Address(rsi, bcp_offset)); | |
| 304 | 211 bswapl(reg); |
| 0 | 212 shrl(reg, 16); |
| 213 } | |
| 214 | |
| 215 | |
| 1565 | 216 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) { |
| 0 | 217 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
| 1565 | 218 if (index_size == sizeof(u2)) { |
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219 load_unsigned_short(reg, Address(rsi, bcp_offset)); |
| 1565 | 220 } else if (index_size == sizeof(u4)) { |
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221 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); |
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222 movl(reg, Address(rsi, bcp_offset)); |
| 1108 | 223 // Check if the secondary index definition is still ~x, otherwise |
| 224 // we have to change the following assembler code to calculate the | |
| 225 // plain index. | |
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226 assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line"); |
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227 notl(reg); // convert to plain index |
| 1565 | 228 } else if (index_size == sizeof(u1)) { |
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229 assert(EnableInvokeDynamic, "tiny index used only for JSR 292"); |
| 1565 | 230 load_unsigned_byte(reg, Address(rsi, bcp_offset)); |
| 231 } else { | |
| 232 ShouldNotReachHere(); | |
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233 } |
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234 } |
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235 |
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236 |
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237 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, |
| 1565 | 238 int bcp_offset, size_t index_size) { |
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239 assert_different_registers(cache, index); |
| 1565 | 240 get_cache_index_at_bcp(index, bcp_offset, index_size); |
| 304 | 241 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 242 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
| 304 | 243 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index |
| 0 | 244 } |
| 245 | |
| 246 | |
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247 void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache, |
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248 Register index, |
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249 Register bytecode, |
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250 int byte_no, |
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251 int bcp_offset, |
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252 size_t index_size) { |
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253 get_cache_and_index_at_bcp(cache, index, bcp_offset, index_size); |
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254 movptr(bytecode, Address(cache, index, Address::times_ptr, constantPoolCacheOopDesc::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
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255 const int shift_count = (1 + byte_no) * BitsPerByte; |
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256 assert((byte_no == TemplateTable::f1_byte && shift_count == ConstantPoolCacheEntry::bytecode_1_shift) || |
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257 (byte_no == TemplateTable::f2_byte && shift_count == ConstantPoolCacheEntry::bytecode_2_shift), |
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258 "correct shift count"); |
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259 shrptr(bytecode, shift_count); |
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260 assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask"); |
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261 andptr(bytecode, ConstantPoolCacheEntry::bytecode_1_mask); |
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262 } |
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263 |
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264 |
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265 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, |
| 1565 | 266 int bcp_offset, size_t index_size) { |
| 0 | 267 assert(cache != tmp, "must use different register"); |
| 1565 | 268 get_cache_index_at_bcp(tmp, bcp_offset, index_size); |
| 0 | 269 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
| 270 // convert from field index to ConstantPoolCacheEntry index | |
| 271 // and from word offset to byte offset | |
| 272 shll(tmp, 2 + LogBytesPerWord); | |
| 304 | 273 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 274 // skip past the header |
| 304 | 275 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset())); |
| 276 addptr(cache, tmp); // construct pointer to cache entry | |
| 0 | 277 } |
| 278 | |
| 279 | |
| 280 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
| 281 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
| 282 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
| 283 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
| 284 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
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285 assert( Rsub_klass != rcx, "used as a temp" ); |
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286 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
| 0 | 287 |
| 288 // Profile the not-null value's klass. | |
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289 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
| 0 | 290 |
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291 // Do the check. |
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292 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
| 0 | 293 |
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294 // Profile the failure of the check. |
| 0 | 295 profile_typecheck_failed(rcx); // blows rcx |
| 296 } | |
| 297 | |
| 298 void InterpreterMacroAssembler::f2ieee() { | |
| 299 if (IEEEPrecision) { | |
| 300 fstp_s(Address(rsp, 0)); | |
| 301 fld_s(Address(rsp, 0)); | |
| 302 } | |
| 303 } | |
| 304 | |
| 305 | |
| 306 void InterpreterMacroAssembler::d2ieee() { | |
| 307 if (IEEEPrecision) { | |
| 308 fstp_d(Address(rsp, 0)); | |
| 309 fld_d(Address(rsp, 0)); | |
| 310 } | |
| 311 } | |
| 312 | |
| 313 // Java Expression Stack | |
| 314 | |
| 315 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 304 | 316 pop(r); |
| 0 | 317 } |
| 318 | |
| 319 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 304 | 320 pop(r); |
| 0 | 321 } |
| 322 | |
| 323 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
| 304 | 324 pop(lo); |
| 325 pop(hi); | |
| 0 | 326 } |
| 327 | |
| 328 void InterpreterMacroAssembler::pop_f() { | |
| 329 fld_s(Address(rsp, 0)); | |
| 304 | 330 addptr(rsp, 1 * wordSize); |
| 0 | 331 } |
| 332 | |
| 333 void InterpreterMacroAssembler::pop_d() { | |
| 334 fld_d(Address(rsp, 0)); | |
| 304 | 335 addptr(rsp, 2 * wordSize); |
| 0 | 336 } |
| 337 | |
| 338 | |
| 339 void InterpreterMacroAssembler::pop(TosState state) { | |
| 340 switch (state) { | |
| 341 case atos: pop_ptr(rax); break; | |
| 342 case btos: // fall through | |
| 343 case ctos: // fall through | |
| 344 case stos: // fall through | |
| 345 case itos: pop_i(rax); break; | |
| 346 case ltos: pop_l(rax, rdx); break; | |
| 347 case ftos: pop_f(); break; | |
| 348 case dtos: pop_d(); break; | |
| 349 case vtos: /* nothing to do */ break; | |
| 350 default : ShouldNotReachHere(); | |
| 351 } | |
| 352 verify_oop(rax, state); | |
| 353 } | |
| 354 | |
| 355 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 304 | 356 push(r); |
| 0 | 357 } |
| 358 | |
| 359 void InterpreterMacroAssembler::push_i(Register r) { | |
| 304 | 360 push(r); |
| 0 | 361 } |
| 362 | |
| 363 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
| 304 | 364 push(hi); |
| 365 push(lo); | |
| 0 | 366 } |
| 367 | |
| 368 void InterpreterMacroAssembler::push_f() { | |
| 369 // Do not schedule for no AGI! Never write beyond rsp! | |
| 304 | 370 subptr(rsp, 1 * wordSize); |
| 0 | 371 fstp_s(Address(rsp, 0)); |
| 372 } | |
| 373 | |
| 374 void InterpreterMacroAssembler::push_d(Register r) { | |
| 1506 | 375 // Do not schedule for no AGI! Never write beyond rsp! |
| 376 subptr(rsp, 2 * wordSize); | |
| 377 fstp_d(Address(rsp, 0)); | |
| 0 | 378 } |
| 379 | |
| 380 | |
| 381 void InterpreterMacroAssembler::push(TosState state) { | |
| 382 verify_oop(rax, state); | |
| 383 switch (state) { | |
| 384 case atos: push_ptr(rax); break; | |
| 385 case btos: // fall through | |
| 386 case ctos: // fall through | |
| 387 case stos: // fall through | |
| 388 case itos: push_i(rax); break; | |
| 389 case ltos: push_l(rax, rdx); break; | |
| 390 case ftos: push_f(); break; | |
| 391 case dtos: push_d(rax); break; | |
| 392 case vtos: /* nothing to do */ break; | |
| 393 default : ShouldNotReachHere(); | |
| 394 } | |
| 395 } | |
| 396 | |
| 397 | |
| 1506 | 398 // Helpers for swap and dup |
| 399 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
| 304 | 400 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
| 0 | 401 } |
| 402 | |
| 1506 | 403 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
| 404 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
| 0 | 405 } |
| 406 | |
| 710 | 407 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
| 0 | 408 // set sender sp |
| 304 | 409 lea(rsi, Address(rsp, wordSize)); |
| 0 | 410 // record last_sp |
| 304 | 411 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
| 710 | 412 } |
| 413 | |
| 414 | |
| 415 // Jump to from_interpreted entry of a call unless single stepping is possible | |
| 416 // in this thread in which case we must call the i2i entry | |
| 417 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
| 418 prepare_to_jump_from_interpreted(); | |
| 0 | 419 |
| 420 if (JvmtiExport::can_post_interpreter_events()) { | |
| 421 Label run_compiled_code; | |
| 422 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 423 // compiled code in threads for which the event is enabled. Check here for | |
| 424 // interp_only_mode if these events CAN be enabled. | |
| 425 get_thread(temp); | |
| 426 // interp_only is an int, on little endian it is sufficient to test the byte only | |
|
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427 // Is a cmpl faster? |
| 0 | 428 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); |
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429 jccb(Assembler::zero, run_compiled_code); |
| 0 | 430 jmp(Address(method, methodOopDesc::interpreter_entry_offset())); |
| 431 bind(run_compiled_code); | |
| 432 } | |
| 433 | |
| 434 jmp(Address(method, methodOopDesc::from_interpreted_offset())); | |
| 435 | |
| 436 } | |
| 437 | |
| 438 | |
| 439 // The following two routines provide a hook so that an implementation | |
| 440 // can schedule the dispatch in two parts. Intel does not do this. | |
| 441 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
| 442 // Nothing Intel-specific to be done here. | |
| 443 } | |
| 444 | |
| 445 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
| 446 dispatch_next(state, step); | |
| 447 } | |
| 448 | |
| 449 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
| 450 bool verifyoop) { | |
| 451 verify_FPU(1, state); | |
| 452 if (VerifyActivationFrameSize) { | |
| 453 Label L; | |
| 304 | 454 mov(rcx, rbp); |
| 455 subptr(rcx, rsp); | |
| 0 | 456 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
| 304 | 457 cmpptr(rcx, min_frame_size); |
| 0 | 458 jcc(Assembler::greaterEqual, L); |
| 459 stop("broken stack frame"); | |
| 460 bind(L); | |
| 461 } | |
| 462 if (verifyoop) verify_oop(rax, state); | |
| 304 | 463 Address index(noreg, rbx, Address::times_ptr); |
| 0 | 464 ExternalAddress tbl((address)table); |
| 465 ArrayAddress dispatch(tbl, index); | |
| 466 jump(dispatch); | |
| 467 } | |
| 468 | |
| 469 | |
| 470 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
| 471 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 472 } | |
| 473 | |
| 474 | |
| 475 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
| 476 dispatch_base(state, Interpreter::normal_table(state)); | |
| 477 } | |
| 478 | |
| 479 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
| 480 dispatch_base(state, Interpreter::normal_table(state), false); | |
| 481 } | |
| 482 | |
| 483 | |
| 484 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
| 485 // load next bytecode (load before advancing rsi to prevent AGI) | |
| 486 load_unsigned_byte(rbx, Address(rsi, step)); | |
| 487 // advance rsi | |
| 488 increment(rsi, step); | |
| 489 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 490 } | |
| 491 | |
| 492 | |
| 493 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 494 // load current bytecode | |
| 495 load_unsigned_byte(rbx, Address(rsi, 0)); | |
| 496 dispatch_base(state, table); | |
| 497 } | |
| 498 | |
| 499 // remove activation | |
| 500 // | |
| 501 // Unlock the receiver if this is a synchronized method. | |
| 502 // Unlock any Java monitors from syncronized blocks. | |
| 503 // Remove the activation from the stack. | |
| 504 // | |
| 505 // If there are locked Java monitors | |
| 506 // If throw_monitor_exception | |
| 507 // throws IllegalMonitorStateException | |
| 508 // Else if install_monitor_exception | |
| 509 // installs IllegalMonitorStateException | |
| 510 // Else | |
| 511 // no error processing | |
| 512 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
| 513 bool throw_monitor_exception, | |
| 514 bool install_monitor_exception, | |
| 515 bool notify_jvmdi) { | |
| 516 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
| 517 // check if synchronized method | |
| 518 Label unlocked, unlock, no_unlock; | |
| 519 | |
| 520 get_thread(rcx); | |
| 521 const Address do_not_unlock_if_synchronized(rcx, | |
| 522 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 523 | |
| 524 movbool(rbx, do_not_unlock_if_synchronized); | |
| 304 | 525 mov(rdi,rbx); |
| 0 | 526 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
| 527 | |
| 304 | 528 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
| 0 | 529 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset())); |
| 530 | |
| 531 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
| 532 jcc(Assembler::zero, unlocked); | |
| 533 | |
| 534 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
| 535 // is set. | |
| 304 | 536 mov(rcx,rdi); |
| 0 | 537 testbool(rcx); |
| 538 jcc(Assembler::notZero, no_unlock); | |
| 539 | |
| 540 // unlock monitor | |
| 541 push(state); // save result | |
| 542 | |
| 543 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 544 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 545 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
| 304 | 546 lea (rdx, monitor); // address of first monitor |
| 0 | 547 |
| 304 | 548 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
| 549 testptr(rax, rax); | |
| 550 jcc (Assembler::notZero, unlock); | |
| 0 | 551 |
| 552 pop(state); | |
| 553 if (throw_monitor_exception) { | |
| 554 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 555 | |
| 556 // Entry already unlocked, need to throw exception | |
| 557 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 558 should_not_reach_here(); | |
| 559 } else { | |
| 560 // Monitor already unlocked during a stack unroll. | |
| 561 // If requested, install an illegal_monitor_state_exception. | |
| 562 // Continue with stack unrolling. | |
| 563 if (install_monitor_exception) { | |
| 564 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 565 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 566 } | |
| 567 jmp(unlocked); | |
| 568 } | |
| 569 | |
| 570 bind(unlock); | |
| 571 unlock_object(rdx); | |
| 572 pop(state); | |
| 573 | |
| 574 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
| 575 bind(unlocked); | |
| 576 | |
| 577 // rax, rdx: Might contain return value | |
| 578 | |
| 579 // Check that all monitors are unlocked | |
| 580 { | |
| 581 Label loop, exception, entry, restart; | |
| 582 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 583 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 584 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 585 | |
| 586 bind(restart); | |
| 304 | 587 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
| 588 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
| 0 | 589 jmp(entry); |
| 590 | |
| 591 // Entry already locked, need to throw exception | |
| 592 bind(exception); | |
| 593 | |
| 594 if (throw_monitor_exception) { | |
| 595 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 596 | |
| 597 // Throw exception | |
| 598 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 599 should_not_reach_here(); | |
| 600 } else { | |
| 601 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
| 602 // Unlock does not block, so don't have to worry about the frame | |
| 603 | |
| 604 push(state); | |
| 304 | 605 mov(rdx, rcx); |
| 0 | 606 unlock_object(rdx); |
| 607 pop(state); | |
| 608 | |
| 609 if (install_monitor_exception) { | |
| 610 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 611 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 612 } | |
| 613 | |
| 614 jmp(restart); | |
| 615 } | |
| 616 | |
| 617 bind(loop); | |
| 304 | 618 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
| 0 | 619 jcc(Assembler::notEqual, exception); |
| 620 | |
| 304 | 621 addptr(rcx, entry_size); // otherwise advance to next entry |
| 0 | 622 bind(entry); |
| 304 | 623 cmpptr(rcx, rbx); // check if bottom reached |
| 0 | 624 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 625 } | |
| 626 | |
| 627 bind(no_unlock); | |
| 628 | |
| 629 // jvmti support | |
| 630 if (notify_jvmdi) { | |
| 631 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
| 632 } else { | |
| 633 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
| 634 } | |
| 635 | |
| 636 // remove activation | |
| 304 | 637 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 638 leave(); // remove frame anchor |
| 304 | 639 pop(ret_addr); // get return address |
| 640 mov(rsp, rbx); // set sp to sender sp | |
| 0 | 641 if (UseSSE) { |
| 642 // float and double are returned in xmm register in SSE-mode | |
| 643 if (state == ftos && UseSSE >= 1) { | |
| 304 | 644 subptr(rsp, wordSize); |
| 0 | 645 fstp_s(Address(rsp, 0)); |
| 646 movflt(xmm0, Address(rsp, 0)); | |
| 304 | 647 addptr(rsp, wordSize); |
| 0 | 648 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 649 subptr(rsp, 2*wordSize); |
| 0 | 650 fstp_d(Address(rsp, 0)); |
| 651 movdbl(xmm0, Address(rsp, 0)); | |
| 304 | 652 addptr(rsp, 2*wordSize); |
| 0 | 653 } |
| 654 } | |
| 655 } | |
| 656 | |
| 657 #endif /* !CC_INTERP */ | |
| 658 | |
| 659 | |
| 660 // Lock object | |
| 661 // | |
| 662 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
| 663 // be initialized with object to lock | |
| 664 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
| 665 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 666 | |
| 667 if (UseHeavyMonitors) { | |
| 668 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 669 } else { | |
| 670 | |
| 671 Label done; | |
| 672 | |
| 673 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 674 const Register obj_reg = rcx; // Will contain the oop | |
| 675 | |
| 676 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
| 677 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
| 678 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
| 679 | |
| 680 Label slow_case; | |
| 681 | |
| 682 // Load object pointer into obj_reg %rcx | |
| 304 | 683 movptr(obj_reg, Address(lock_reg, obj_offset)); |
| 0 | 684 |
| 685 if (UseBiasedLocking) { | |
| 686 // Note: we use noreg for the temporary register since it's hard | |
| 687 // to come up with a free register on all incoming code paths | |
| 688 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
| 689 } | |
| 690 | |
| 691 // Load immediate 1 into swap_reg %rax, | |
| 304 | 692 movptr(swap_reg, (int32_t)1); |
| 0 | 693 |
| 694 // Load (object->mark() | 1) into swap_reg %rax, | |
| 304 | 695 orptr(swap_reg, Address(obj_reg, 0)); |
| 0 | 696 |
| 697 // Save (object->mark() | 1) into BasicLock's displaced header | |
| 304 | 698 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 699 |
| 700 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
| 701 if (os::is_MP()) { | |
| 702 lock(); | |
| 703 } | |
| 304 | 704 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
| 0 | 705 if (PrintBiasedLockingStatistics) { |
| 706 cond_inc32(Assembler::zero, | |
| 707 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 708 } | |
| 709 jcc(Assembler::zero, done); | |
| 710 | |
| 711 // Test if the oopMark is an obvious stack pointer, i.e., | |
| 712 // 1) (mark & 3) == 0, and | |
| 713 // 2) rsp <= mark < mark + os::pagesize() | |
| 714 // | |
| 715 // These 3 tests can be done by evaluating the following | |
| 716 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
| 717 // assuming both stack pointer and pagesize have their | |
| 718 // least significant 2 bits clear. | |
| 719 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
| 304 | 720 subptr(swap_reg, rsp); |
| 721 andptr(swap_reg, 3 - os::vm_page_size()); | |
| 0 | 722 |
| 723 // Save the test result, for recursive case, the result is zero | |
| 304 | 724 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 725 |
| 726 if (PrintBiasedLockingStatistics) { | |
| 727 cond_inc32(Assembler::zero, | |
| 728 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 729 } | |
| 730 jcc(Assembler::zero, done); | |
| 731 | |
| 732 bind(slow_case); | |
| 733 | |
| 734 // Call the runtime routine for slow case | |
| 735 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 736 | |
| 737 bind(done); | |
| 738 } | |
| 739 } | |
| 740 | |
| 741 | |
| 742 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
| 743 // | |
| 744 // Argument: rdx : Points to BasicObjectLock structure for lock | |
| 745 // Throw an IllegalMonitorException if object is not locked by current thread | |
| 746 // | |
| 747 // Uses: rax, rbx, rcx, rdx | |
| 748 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
| 749 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 750 | |
| 751 if (UseHeavyMonitors) { | |
| 752 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
| 753 } else { | |
| 754 Label done; | |
| 755 | |
| 756 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 757 const Register header_reg = rbx; // Will contain the old oopMark | |
| 758 const Register obj_reg = rcx; // Will contain the oop | |
| 759 | |
| 760 save_bcp(); // Save in case of exception | |
| 761 | |
| 762 // Convert from BasicObjectLock structure to object and BasicLock structure | |
| 763 // Store the BasicLock address into %rax, | |
| 304 | 764 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
| 0 | 765 |
| 766 // Load oop into obj_reg(%rcx) | |
| 304 | 767 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
| 0 | 768 |
| 769 // Free entry | |
|
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770 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
| 0 | 771 |
| 772 if (UseBiasedLocking) { | |
| 773 biased_locking_exit(obj_reg, header_reg, done); | |
| 774 } | |
| 775 | |
| 776 // Load the old header from BasicLock structure | |
| 304 | 777 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
| 0 | 778 |
| 779 // Test for recursion | |
| 304 | 780 testptr(header_reg, header_reg); |
| 0 | 781 |
| 782 // zero for recursive case | |
| 783 jcc(Assembler::zero, done); | |
| 784 | |
| 785 // Atomic swap back the old header | |
| 786 if (os::is_MP()) lock(); | |
| 304 | 787 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
| 0 | 788 |
| 789 // zero for recursive case | |
| 790 jcc(Assembler::zero, done); | |
| 791 | |
| 792 // Call the runtime routine for slow case. | |
| 304 | 793 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
| 0 | 794 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
| 795 | |
| 796 bind(done); | |
| 797 | |
| 798 restore_bcp(); | |
| 799 } | |
| 800 } | |
| 801 | |
| 802 | |
| 803 #ifndef CC_INTERP | |
| 804 | |
| 805 // Test ImethodDataPtr. If it is null, continue at the specified label | |
| 806 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
| 807 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 808 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
| 809 testptr(mdp, mdp); | |
| 0 | 810 jcc(Assembler::zero, zero_continue); |
| 811 } | |
| 812 | |
| 813 | |
| 814 // Set the method data pointer for the current bcp. | |
| 815 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 816 assert(ProfileInterpreter, "must be profiling interpreter"); | |
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817 Label set_mdp; |
| 304 | 818 push(rax); |
| 819 push(rbx); | |
| 0 | 820 |
| 821 get_method(rbx); | |
| 822 // Test MDO to avoid the call if it is NULL. | |
| 304 | 823 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 824 testptr(rax, rax); | |
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825 jcc(Assembler::zero, set_mdp); |
| 0 | 826 // rbx,: method |
| 827 // rsi: bcp | |
| 828 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
| 829 // rax,: mdi | |
|
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830 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
| 304 | 831 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset()))); |
| 832 addptr(rbx, in_bytes(methodDataOopDesc::data_offset())); | |
|
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833 addptr(rax, rbx); |
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834 bind(set_mdp); |
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835 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
| 304 | 836 pop(rbx); |
| 837 pop(rax); | |
| 0 | 838 } |
| 839 | |
| 840 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 841 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 842 #ifdef ASSERT | |
| 843 Label verify_continue; | |
| 304 | 844 push(rax); |
| 845 push(rbx); | |
| 846 push(rcx); | |
| 847 push(rdx); | |
| 0 | 848 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
| 849 get_method(rbx); | |
| 850 | |
| 851 // If the mdp is valid, it will point to a DataLayout header which is | |
| 852 // consistent with the bcp. The converse is highly probable also. | |
|
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853 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
| 304 | 854 addptr(rdx, Address(rbx, methodOopDesc::const_offset())); |
| 855 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset())); | |
| 856 cmpptr(rdx, rsi); | |
| 0 | 857 jcc(Assembler::equal, verify_continue); |
| 858 // rbx,: method | |
| 859 // rsi: bcp | |
| 860 // rcx: mdp | |
| 861 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
| 862 bind(verify_continue); | |
| 304 | 863 pop(rdx); |
| 864 pop(rcx); | |
| 865 pop(rbx); | |
| 866 pop(rax); | |
| 0 | 867 #endif // ASSERT |
| 868 } | |
| 869 | |
| 870 | |
| 871 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
| 304 | 872 // %%% this seems to be used to store counter data which is surely 32bits |
| 873 // however 64bit side stores 64 bits which seems wrong | |
| 0 | 874 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 875 Address data(mdp_in, constant); | |
| 304 | 876 movptr(data, value); |
| 0 | 877 } |
| 878 | |
| 879 | |
| 880 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 881 int constant, | |
| 882 bool decrement) { | |
| 883 // Counter address | |
| 884 Address data(mdp_in, constant); | |
| 885 | |
| 886 increment_mdp_data_at(data, decrement); | |
| 887 } | |
| 888 | |
| 889 | |
| 890 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
| 891 bool decrement) { | |
| 892 | |
| 893 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 894 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 895 | |
| 304 | 896 // %%% 64bit treats this as 64 bit which seems unlikely |
| 0 | 897 if (decrement) { |
| 898 // Decrement the register. Set condition codes. | |
| 899 addl(data, -DataLayout::counter_increment); | |
| 900 // If the decrement causes the counter to overflow, stay negative | |
| 901 Label L; | |
| 902 jcc(Assembler::negative, L); | |
| 903 addl(data, DataLayout::counter_increment); | |
| 904 bind(L); | |
| 905 } else { | |
| 906 assert(DataLayout::counter_increment == 1, | |
| 907 "flow-free idiom only works with 1"); | |
| 908 // Increment the register. Set carry flag. | |
| 909 addl(data, DataLayout::counter_increment); | |
| 910 // If the increment causes the counter to overflow, pull back by 1. | |
| 911 sbbl(data, 0); | |
| 912 } | |
| 913 } | |
| 914 | |
| 915 | |
| 916 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 917 Register reg, | |
| 918 int constant, | |
| 919 bool decrement) { | |
| 920 Address data(mdp_in, reg, Address::times_1, constant); | |
| 921 | |
| 922 increment_mdp_data_at(data, decrement); | |
| 923 } | |
| 924 | |
| 925 | |
| 926 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
| 927 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 928 int header_offset = in_bytes(DataLayout::header_offset()); | |
| 929 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
| 930 // Set the flag | |
| 931 orl(Address(mdp_in, header_offset), header_bits); | |
| 932 } | |
| 933 | |
| 934 | |
| 935 | |
| 936 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
| 937 int offset, | |
| 938 Register value, | |
| 939 Register test_value_out, | |
| 940 Label& not_equal_continue) { | |
| 941 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 942 if (test_value_out == noreg) { | |
| 304 | 943 cmpptr(value, Address(mdp_in, offset)); |
| 0 | 944 } else { |
| 945 // Put the test value into a register, so caller can use it: | |
| 304 | 946 movptr(test_value_out, Address(mdp_in, offset)); |
| 947 cmpptr(test_value_out, value); | |
| 0 | 948 } |
| 949 jcc(Assembler::notEqual, not_equal_continue); | |
| 950 } | |
| 951 | |
| 952 | |
| 953 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
| 954 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 955 Address disp_address(mdp_in, offset_of_disp); | |
| 304 | 956 addptr(mdp_in,disp_address); |
| 957 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 958 } |
| 959 | |
| 960 | |
| 961 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
| 962 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 963 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
| 304 | 964 addptr(mdp_in, disp_address); |
| 965 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 966 } |
| 967 | |
| 968 | |
| 969 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
| 970 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 971 addptr(mdp_in, constant); |
| 972 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 973 } |
| 974 | |
| 975 | |
| 976 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
| 977 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 978 push(return_bci); // save/restore across call_VM |
| 0 | 979 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
| 304 | 980 pop(return_bci); |
| 0 | 981 } |
| 982 | |
| 983 | |
| 984 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
| 985 if (ProfileInterpreter) { | |
| 986 Label profile_continue; | |
| 987 | |
| 988 // If no method data exists, go to profile_continue. | |
| 989 // Otherwise, assign to mdp | |
| 990 test_method_data_pointer(mdp, profile_continue); | |
| 991 | |
| 992 // We are taking a branch. Increment the taken count. | |
| 993 // We inline increment_mdp_data_at to return bumped_count in a register | |
| 994 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
| 995 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
| 304 | 996 |
| 997 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
| 0 | 998 movl(bumped_count,data); |
| 999 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 1000 addl(bumped_count, DataLayout::counter_increment); | |
| 1001 sbbl(bumped_count, 0); | |
| 1002 movl(data,bumped_count); // Store back out | |
| 1003 | |
| 1004 // The method data pointer needs to be updated to reflect the new target. | |
| 1005 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
| 1006 bind (profile_continue); | |
| 1007 } | |
| 1008 } | |
| 1009 | |
| 1010 | |
| 1011 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
| 1012 if (ProfileInterpreter) { | |
| 1013 Label profile_continue; | |
| 1014 | |
| 1015 // If no method data exists, go to profile_continue. | |
| 1016 test_method_data_pointer(mdp, profile_continue); | |
| 1017 | |
| 1018 // We are taking a branch. Increment the not taken count. | |
| 1019 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
| 1020 | |
| 1021 // The method data pointer needs to be updated to correspond to the next bytecode | |
| 1022 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
| 1023 bind (profile_continue); | |
| 1024 } | |
| 1025 } | |
| 1026 | |
| 1027 | |
| 1028 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
| 1029 if (ProfileInterpreter) { | |
| 1030 Label profile_continue; | |
| 1031 | |
| 1032 // If no method data exists, go to profile_continue. | |
| 1033 test_method_data_pointer(mdp, profile_continue); | |
| 1034 | |
| 1035 // We are making a call. Increment the count. | |
| 1036 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1037 | |
| 1038 // The method data pointer needs to be updated to reflect the new target. | |
| 1039 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
| 1040 bind (profile_continue); | |
| 1041 } | |
| 1042 } | |
| 1043 | |
| 1044 | |
| 1045 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
| 1046 if (ProfileInterpreter) { | |
| 1047 Label profile_continue; | |
| 1048 | |
| 1049 // If no method data exists, go to profile_continue. | |
| 1050 test_method_data_pointer(mdp, profile_continue); | |
| 1051 | |
| 1052 // We are making a call. Increment the count. | |
| 1053 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1054 | |
| 1055 // The method data pointer needs to be updated to reflect the new target. | |
| 1056 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1057 bind (profile_continue); | |
| 1058 } | |
| 1059 } | |
| 1060 | |
| 1061 | |
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1062 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, |
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1063 Register reg2, |
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1064 bool receiver_can_be_null) { |
| 0 | 1065 if (ProfileInterpreter) { |
| 1066 Label profile_continue; | |
| 1067 | |
| 1068 // If no method data exists, go to profile_continue. | |
| 1069 test_method_data_pointer(mdp, profile_continue); | |
| 1070 | |
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1071 Label skip_receiver_profile; |
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1072 if (receiver_can_be_null) { |
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1073 Label not_null; |
|
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1074 testptr(receiver, receiver); |
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1075 jccb(Assembler::notZero, not_null); |
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1076 // We are making a call. Increment the count for null receiver. |
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1077 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1078 jmp(skip_receiver_profile); |
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1079 bind(not_null); |
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1080 } |
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1081 |
| 0 | 1082 // Record the receiver type. |
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1083 record_klass_in_profile(receiver, mdp, reg2, true); |
|
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1084 bind(skip_receiver_profile); |
| 0 | 1085 |
| 1086 // The method data pointer needs to be updated to reflect the new target. | |
| 1087 update_mdp_by_constant(mdp, | |
| 1088 in_bytes(VirtualCallData:: | |
| 1089 virtual_call_data_size())); | |
| 1090 bind(profile_continue); | |
| 1091 } | |
| 1092 } | |
| 1093 | |
| 1094 | |
| 1095 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1096 Register receiver, Register mdp, | |
|
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1097 Register reg2, int start_row, |
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1098 Label& done, bool is_virtual_call) { |
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1099 if (TypeProfileWidth == 0) { |
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1100 if (is_virtual_call) { |
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1101 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1102 } |
|
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1103 return; |
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1104 } |
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1105 |
| 0 | 1106 int last_row = VirtualCallData::row_limit() - 1; |
| 1107 assert(start_row <= last_row, "must be work left to do"); | |
| 1108 // Test this row for both the receiver and for null. | |
| 1109 // Take any of three different outcomes: | |
| 1110 // 1. found receiver => increment count and goto done | |
| 1111 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1112 // 3. found something else => keep looking for cases 1 and 2 | |
| 1113 // Case 3 is handled by a recursive call. | |
| 1114 for (int row = start_row; row <= last_row; row++) { | |
| 1115 Label next_test; | |
| 1116 bool test_for_null_also = (row == start_row); | |
| 1117 | |
| 1118 // See if the receiver is receiver[n]. | |
| 1119 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1120 test_mdp_data_at(mdp, recvr_offset, receiver, | |
| 1121 (test_for_null_also ? reg2 : noreg), | |
| 1122 next_test); | |
| 1123 // (Reg2 now contains the receiver from the CallData.) | |
| 1124 | |
| 1125 // The receiver is receiver[n]. Increment count[n]. | |
| 1126 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1127 increment_mdp_data_at(mdp, count_offset); | |
| 1128 jmp(done); | |
| 1129 bind(next_test); | |
| 1130 | |
| 1131 if (row == start_row) { | |
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1132 Label found_null; |
| 0 | 1133 // Failed the equality check on receiver[n]... Test for null. |
| 304 | 1134 testptr(reg2, reg2); |
| 0 | 1135 if (start_row == last_row) { |
| 1136 // The only thing left to do is handle the null case. | |
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1137 if (is_virtual_call) { |
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1138 jccb(Assembler::zero, found_null); |
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1139 // Receiver did not match any saved receiver and there is no empty row for it. |
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1140 // Increment total counter to indicate polymorphic case. |
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1141 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1142 jmp(done); |
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1143 bind(found_null); |
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1144 } else { |
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1145 jcc(Assembler::notZero, done); |
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1146 } |
| 0 | 1147 break; |
| 1148 } | |
| 1149 // Since null is rare, make it be the branch-taken case. | |
| 1150 jcc(Assembler::zero, found_null); | |
| 1151 | |
| 1152 // Put all the "Case 3" tests here. | |
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1153 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
| 0 | 1154 |
| 1155 // Found a null. Keep searching for a matching receiver, | |
| 1156 // but remember that this is an empty (unused) slot. | |
| 1157 bind(found_null); | |
| 1158 } | |
| 1159 } | |
| 1160 | |
| 1161 // In the fall-through case, we found no matching receiver, but we | |
| 1162 // observed the receiver[start_row] is NULL. | |
| 1163 | |
| 1164 // Fill in the receiver field and increment the count. | |
| 1165 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1166 set_mdp_data_at(mdp, recvr_offset, receiver); | |
| 1167 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 3960 | 1168 movptr(reg2, (intptr_t)DataLayout::counter_increment); |
| 0 | 1169 set_mdp_data_at(mdp, count_offset, reg2); |
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1170 if (start_row > 0) { |
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1171 jmp(done); |
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1172 } |
| 0 | 1173 } |
| 1174 | |
| 1175 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
|
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1176 Register mdp, Register reg2, |
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1177 bool is_virtual_call) { |
| 0 | 1178 assert(ProfileInterpreter, "must be profiling"); |
| 1179 Label done; | |
| 1180 | |
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1181 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
| 0 | 1182 |
| 1183 bind (done); | |
| 1184 } | |
| 1185 | |
| 1186 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
| 1187 if (ProfileInterpreter) { | |
| 1188 Label profile_continue; | |
| 1189 uint row; | |
| 1190 | |
| 1191 // If no method data exists, go to profile_continue. | |
| 1192 test_method_data_pointer(mdp, profile_continue); | |
| 1193 | |
| 1194 // Update the total ret count. | |
| 1195 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1196 | |
| 1197 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1198 Label next_test; | |
| 1199 | |
| 1200 // See if return_bci is equal to bci[n]: | |
| 1201 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
| 1202 noreg, next_test); | |
| 1203 | |
| 1204 // return_bci is equal to bci[n]. Increment the count. | |
| 1205 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
| 1206 | |
| 1207 // The method data pointer needs to be updated to reflect the new target. | |
| 1208 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
| 1209 jmp(profile_continue); | |
| 1210 bind(next_test); | |
| 1211 } | |
| 1212 | |
| 1213 update_mdp_for_ret(return_bci); | |
| 1214 | |
| 1215 bind (profile_continue); | |
| 1216 } | |
| 1217 } | |
| 1218 | |
| 1219 | |
| 1220 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
| 1221 if (ProfileInterpreter) { | |
| 1222 Label profile_continue; | |
| 1223 | |
| 1224 // If no method data exists, go to profile_continue. | |
| 1225 test_method_data_pointer(mdp, profile_continue); | |
| 1226 | |
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1227 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1228 |
| 0 | 1229 // The method data pointer needs to be updated. |
| 1230 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1231 if (TypeProfileCasts) { | |
| 1232 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1233 } | |
| 1234 update_mdp_by_constant(mdp, mdp_delta); | |
| 1235 | |
| 1236 bind (profile_continue); | |
| 1237 } | |
| 1238 } | |
| 1239 | |
| 1240 | |
| 1241 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
| 1242 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1243 Label profile_continue; | |
| 1244 | |
| 1245 // If no method data exists, go to profile_continue. | |
| 1246 test_method_data_pointer(mdp, profile_continue); | |
| 1247 | |
| 1248 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1249 // Back up the address, since we have already bumped the mdp. | |
| 1250 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1251 | |
| 1252 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1253 increment_mdp_data_at(mdp, count_offset, true); | |
| 1254 | |
| 1255 bind (profile_continue); | |
| 1256 } | |
| 1257 } | |
| 1258 | |
| 1259 | |
| 1260 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
| 1261 { | |
| 1262 if (ProfileInterpreter) { | |
| 1263 Label profile_continue; | |
| 1264 | |
| 1265 // If no method data exists, go to profile_continue. | |
| 1266 test_method_data_pointer(mdp, profile_continue); | |
| 1267 | |
| 1268 // The method data pointer needs to be updated. | |
| 1269 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1270 if (TypeProfileCasts) { | |
| 1271 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1272 | |
| 1273 // Record the object type. | |
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1274 record_klass_in_profile(klass, mdp, reg2, false); |
| 0 | 1275 assert(reg2 == rdi, "we know how to fix this blown reg"); |
| 1276 restore_locals(); // Restore EDI | |
| 1277 } | |
| 1278 update_mdp_by_constant(mdp, mdp_delta); | |
| 1279 | |
| 1280 bind(profile_continue); | |
| 1281 } | |
| 1282 } | |
| 1283 | |
| 1284 | |
| 1285 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
| 1286 if (ProfileInterpreter) { | |
| 1287 Label profile_continue; | |
| 1288 | |
| 1289 // If no method data exists, go to profile_continue. | |
| 1290 test_method_data_pointer(mdp, profile_continue); | |
| 1291 | |
| 1292 // Update the default case count | |
| 1293 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
| 1294 | |
| 1295 // The method data pointer needs to be updated. | |
| 1296 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
| 1297 | |
| 1298 bind (profile_continue); | |
| 1299 } | |
| 1300 } | |
| 1301 | |
| 1302 | |
| 1303 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
| 1304 if (ProfileInterpreter) { | |
| 1305 Label profile_continue; | |
| 1306 | |
| 1307 // If no method data exists, go to profile_continue. | |
| 1308 test_method_data_pointer(mdp, profile_continue); | |
| 1309 | |
| 1310 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
| 3960 | 1311 movptr(reg2, (intptr_t)in_bytes(MultiBranchData::per_case_size())); |
| 304 | 1312 // index is positive and so should have correct value if this code were |
| 1313 // used on 64bits | |
| 1314 imulptr(index, reg2); | |
| 1315 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
| 0 | 1316 |
| 1317 // Update the case count | |
| 1318 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
| 1319 | |
| 1320 // The method data pointer needs to be updated. | |
| 1321 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
| 1322 | |
| 1323 bind (profile_continue); | |
| 1324 } | |
| 1325 } | |
| 1326 | |
| 1327 #endif // !CC_INTERP | |
| 1328 | |
| 1329 | |
| 1330 | |
| 1331 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
| 1332 if (state == atos) MacroAssembler::verify_oop(reg); | |
| 1333 } | |
| 1334 | |
| 1335 | |
| 1336 #ifndef CC_INTERP | |
| 1337 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 1338 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
| 1339 } | |
| 1340 | |
| 1341 #endif /* CC_INTERP */ | |
| 1342 | |
| 1343 | |
| 1344 void InterpreterMacroAssembler::notify_method_entry() { | |
| 1345 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1346 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1347 // the code to check if the event should be sent. | |
| 1348 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1349 Label L; | |
| 1350 get_thread(rcx); | |
| 1351 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1352 testl(rcx,rcx); | |
| 1353 jcc(Assembler::zero, L); | |
| 1354 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
| 1355 bind(L); | |
| 1356 } | |
| 1357 | |
| 1358 { | |
| 1359 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 1360 get_thread(rcx); | |
| 1361 get_method(rbx); | |
| 1362 call_VM_leaf( | |
| 1363 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
| 1364 } | |
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1365 |
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1366 // RedefineClasses() tracing support for obsolete method entry |
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1367 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1368 get_thread(rcx); |
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1369 get_method(rbx); |
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1370 call_VM_leaf( |
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1371 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1372 rcx, rbx); |
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1373 } |
| 0 | 1374 } |
| 1375 | |
| 1376 | |
| 1377 void InterpreterMacroAssembler::notify_method_exit( | |
| 1378 TosState state, NotifyMethodExitMode mode) { | |
| 1379 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1380 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1381 // the code to check if the event should be sent. | |
| 1382 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
| 1383 Label L; | |
| 1384 // Note: frame::interpreter_frame_result has a dependency on how the | |
| 1385 // method result is saved across the call to post_method_exit. If this | |
| 1386 // is changed then the interpreter_frame_result implementation will | |
| 1387 // need to be updated too. | |
| 1388 | |
| 1389 // For c++ interpreter the result is always stored at a known location in the frame | |
| 1390 // template interpreter will leave it on the top of the stack. | |
| 1391 NOT_CC_INTERP(push(state);) | |
| 1392 get_thread(rcx); | |
| 1393 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1394 testl(rcx,rcx); | |
| 1395 jcc(Assembler::zero, L); | |
| 1396 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
| 1397 bind(L); | |
| 1398 NOT_CC_INTERP(pop(state);) | |
| 1399 } | |
| 1400 | |
| 1401 { | |
| 1402 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 304 | 1403 NOT_CC_INTERP(push(state)); |
| 0 | 1404 get_thread(rbx); |
| 1405 get_method(rcx); | |
| 1406 call_VM_leaf( | |
| 1407 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
| 1408 rbx, rcx); | |
| 304 | 1409 NOT_CC_INTERP(pop(state)); |
| 0 | 1410 } |
| 1411 } | |
| 1783 | 1412 |
| 1413 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
| 1414 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
| 1415 int increment, int mask, | |
| 1416 Register scratch, bool preloaded, | |
| 1417 Condition cond, Label* where) { | |
| 1418 if (!preloaded) { | |
| 1419 movl(scratch, counter_addr); | |
| 1420 } | |
| 1421 incrementl(scratch, increment); | |
| 1422 movl(counter_addr, scratch); | |
| 1423 andl(scratch, mask); | |
| 1424 jcc(cond, *where); | |
| 1425 } |