Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_32.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 1d7922586cf6 |
| children | f34d701e952e |
| 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_x86_32.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" | |
| 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(ConstantPool::decode_invokedynamic_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)) { |
| 229 load_unsigned_byte(reg, Address(rsi, bcp_offset)); | |
| 230 } else { | |
| 231 ShouldNotReachHere(); | |
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232 } |
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233 } |
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234 |
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235 |
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236 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, |
| 1565 | 237 int bcp_offset, size_t index_size) { |
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238 assert_different_registers(cache, index); |
| 1565 | 239 get_cache_index_at_bcp(index, bcp_offset, index_size); |
| 304 | 240 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 241 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below"); |
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242 assert(exact_log2(in_words(ConstantPoolCacheEntry::size())) == 2, "else change next line"); |
| 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, ConstantPoolCache::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 | |
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272 assert(exact_log2(in_bytes(ConstantPoolCacheEntry::size_in_bytes())) == 2 + LogBytesPerWord, "else change next line"); |
| 0 | 273 shll(tmp, 2 + LogBytesPerWord); |
| 304 | 274 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 275 // skip past the header |
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276 addptr(cache, in_bytes(ConstantPoolCache::base_offset())); |
| 304 | 277 addptr(cache, tmp); // construct pointer to cache entry |
| 0 | 278 } |
| 279 | |
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280 // Load object from cpool->resolved_references(index) |
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281 void InterpreterMacroAssembler::load_resolved_reference_at_index( |
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282 Register result, Register index) { |
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283 assert_different_registers(result, index); |
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284 // convert from field index to resolved_references() index and from |
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285 // word index to byte offset. Since this is a java object, it can be compressed |
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286 Register tmp = index; // reuse |
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287 shll(tmp, LogBytesPerHeapOop); |
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288 |
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289 get_constant_pool(result); |
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290 // load pointer for resolved_references[] objArray |
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291 movptr(result, Address(result, ConstantPool::resolved_references_offset_in_bytes())); |
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292 // JNIHandles::resolve(obj); |
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293 movptr(result, Address(result, 0)); |
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294 // Add in the index |
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295 addptr(result, tmp); |
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296 load_heap_oop(result, Address(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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297 } |
| 0 | 298 |
| 299 // Generate a subtype check: branch to ok_is_subtype if sub_klass is | |
| 300 // a subtype of super_klass. EAX holds the super_klass. Blows ECX. | |
| 301 // Resets EDI to locals. Register sub_klass cannot be any of the above. | |
| 302 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) { | |
| 303 assert( Rsub_klass != rax, "rax, holds superklass" ); | |
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304 assert( Rsub_klass != rcx, "used as a temp" ); |
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305 assert( Rsub_klass != rdi, "used as a temp, restored from locals" ); |
| 0 | 306 |
| 307 // Profile the not-null value's klass. | |
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308 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
| 0 | 309 |
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310 // Do the check. |
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311 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
| 0 | 312 |
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313 // Profile the failure of the check. |
| 0 | 314 profile_typecheck_failed(rcx); // blows rcx |
| 315 } | |
| 316 | |
| 317 void InterpreterMacroAssembler::f2ieee() { | |
| 318 if (IEEEPrecision) { | |
| 319 fstp_s(Address(rsp, 0)); | |
| 320 fld_s(Address(rsp, 0)); | |
| 321 } | |
| 322 } | |
| 323 | |
| 324 | |
| 325 void InterpreterMacroAssembler::d2ieee() { | |
| 326 if (IEEEPrecision) { | |
| 327 fstp_d(Address(rsp, 0)); | |
| 328 fld_d(Address(rsp, 0)); | |
| 329 } | |
| 330 } | |
| 331 | |
| 332 // Java Expression Stack | |
| 333 | |
| 334 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 304 | 335 pop(r); |
| 0 | 336 } |
| 337 | |
| 338 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 304 | 339 pop(r); |
| 0 | 340 } |
| 341 | |
| 342 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) { | |
| 304 | 343 pop(lo); |
| 344 pop(hi); | |
| 0 | 345 } |
| 346 | |
| 347 void InterpreterMacroAssembler::pop_f() { | |
| 348 fld_s(Address(rsp, 0)); | |
| 304 | 349 addptr(rsp, 1 * wordSize); |
| 0 | 350 } |
| 351 | |
| 352 void InterpreterMacroAssembler::pop_d() { | |
| 353 fld_d(Address(rsp, 0)); | |
| 304 | 354 addptr(rsp, 2 * wordSize); |
| 0 | 355 } |
| 356 | |
| 357 | |
| 358 void InterpreterMacroAssembler::pop(TosState state) { | |
| 359 switch (state) { | |
| 360 case atos: pop_ptr(rax); break; | |
| 361 case btos: // fall through | |
| 362 case ctos: // fall through | |
| 363 case stos: // fall through | |
| 364 case itos: pop_i(rax); break; | |
| 365 case ltos: pop_l(rax, rdx); break; | |
| 366 case ftos: pop_f(); break; | |
| 367 case dtos: pop_d(); break; | |
| 368 case vtos: /* nothing to do */ break; | |
| 369 default : ShouldNotReachHere(); | |
| 370 } | |
| 371 verify_oop(rax, state); | |
| 372 } | |
| 373 | |
| 374 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 304 | 375 push(r); |
| 0 | 376 } |
| 377 | |
| 378 void InterpreterMacroAssembler::push_i(Register r) { | |
| 304 | 379 push(r); |
| 0 | 380 } |
| 381 | |
| 382 void InterpreterMacroAssembler::push_l(Register lo, Register hi) { | |
| 304 | 383 push(hi); |
| 384 push(lo); | |
| 0 | 385 } |
| 386 | |
| 387 void InterpreterMacroAssembler::push_f() { | |
| 388 // Do not schedule for no AGI! Never write beyond rsp! | |
| 304 | 389 subptr(rsp, 1 * wordSize); |
| 0 | 390 fstp_s(Address(rsp, 0)); |
| 391 } | |
| 392 | |
| 393 void InterpreterMacroAssembler::push_d(Register r) { | |
| 1506 | 394 // Do not schedule for no AGI! Never write beyond rsp! |
| 395 subptr(rsp, 2 * wordSize); | |
| 396 fstp_d(Address(rsp, 0)); | |
| 0 | 397 } |
| 398 | |
| 399 | |
| 400 void InterpreterMacroAssembler::push(TosState state) { | |
| 401 verify_oop(rax, state); | |
| 402 switch (state) { | |
| 403 case atos: push_ptr(rax); break; | |
| 404 case btos: // fall through | |
| 405 case ctos: // fall through | |
| 406 case stos: // fall through | |
| 407 case itos: push_i(rax); break; | |
| 408 case ltos: push_l(rax, rdx); break; | |
| 409 case ftos: push_f(); break; | |
| 410 case dtos: push_d(rax); break; | |
| 411 case vtos: /* nothing to do */ break; | |
| 412 default : ShouldNotReachHere(); | |
| 413 } | |
| 414 } | |
| 415 | |
| 416 | |
| 1506 | 417 // Helpers for swap and dup |
| 418 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
| 304 | 419 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
| 0 | 420 } |
| 421 | |
| 1506 | 422 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
| 423 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
| 0 | 424 } |
| 425 | |
| 710 | 426 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
| 0 | 427 // set sender sp |
| 304 | 428 lea(rsi, Address(rsp, wordSize)); |
| 0 | 429 // record last_sp |
| 304 | 430 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi); |
| 710 | 431 } |
| 432 | |
| 433 | |
| 434 // Jump to from_interpreted entry of a call unless single stepping is possible | |
| 435 // in this thread in which case we must call the i2i entry | |
| 436 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
| 437 prepare_to_jump_from_interpreted(); | |
| 0 | 438 |
| 439 if (JvmtiExport::can_post_interpreter_events()) { | |
| 440 Label run_compiled_code; | |
| 441 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 442 // compiled code in threads for which the event is enabled. Check here for | |
| 443 // interp_only_mode if these events CAN be enabled. | |
| 444 get_thread(temp); | |
| 445 // interp_only is an int, on little endian it is sufficient to test the byte only | |
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446 // Is a cmpl faster? |
| 0 | 447 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0); |
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448 jccb(Assembler::zero, run_compiled_code); |
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449 jmp(Address(method, Method::interpreter_entry_offset())); |
| 0 | 450 bind(run_compiled_code); |
| 451 } | |
| 452 | |
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453 jmp(Address(method, Method::from_interpreted_offset())); |
| 0 | 454 |
| 455 } | |
| 456 | |
| 457 | |
| 458 // The following two routines provide a hook so that an implementation | |
| 459 // can schedule the dispatch in two parts. Intel does not do this. | |
| 460 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
| 461 // Nothing Intel-specific to be done here. | |
| 462 } | |
| 463 | |
| 464 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
| 465 dispatch_next(state, step); | |
| 466 } | |
| 467 | |
| 468 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table, | |
| 469 bool verifyoop) { | |
| 470 verify_FPU(1, state); | |
| 471 if (VerifyActivationFrameSize) { | |
| 472 Label L; | |
| 304 | 473 mov(rcx, rbp); |
| 474 subptr(rcx, rsp); | |
| 0 | 475 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize; |
| 304 | 476 cmpptr(rcx, min_frame_size); |
| 0 | 477 jcc(Assembler::greaterEqual, L); |
| 478 stop("broken stack frame"); | |
| 479 bind(L); | |
| 480 } | |
| 481 if (verifyoop) verify_oop(rax, state); | |
| 304 | 482 Address index(noreg, rbx, Address::times_ptr); |
| 0 | 483 ExternalAddress tbl((address)table); |
| 484 ArrayAddress dispatch(tbl, index); | |
| 485 jump(dispatch); | |
| 486 } | |
| 487 | |
| 488 | |
| 489 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
| 490 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 491 } | |
| 492 | |
| 493 | |
| 494 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
| 495 dispatch_base(state, Interpreter::normal_table(state)); | |
| 496 } | |
| 497 | |
| 498 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
| 499 dispatch_base(state, Interpreter::normal_table(state), false); | |
| 500 } | |
| 501 | |
| 502 | |
| 503 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
| 504 // load next bytecode (load before advancing rsi to prevent AGI) | |
| 505 load_unsigned_byte(rbx, Address(rsi, step)); | |
| 506 // advance rsi | |
| 507 increment(rsi, step); | |
| 508 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 509 } | |
| 510 | |
| 511 | |
| 512 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 513 // load current bytecode | |
| 514 load_unsigned_byte(rbx, Address(rsi, 0)); | |
| 515 dispatch_base(state, table); | |
| 516 } | |
| 517 | |
| 518 // remove activation | |
| 519 // | |
| 520 // Unlock the receiver if this is a synchronized method. | |
| 521 // Unlock any Java monitors from syncronized blocks. | |
| 522 // Remove the activation from the stack. | |
| 523 // | |
| 524 // If there are locked Java monitors | |
| 525 // If throw_monitor_exception | |
| 526 // throws IllegalMonitorStateException | |
| 527 // Else if install_monitor_exception | |
| 528 // installs IllegalMonitorStateException | |
| 529 // Else | |
| 530 // no error processing | |
| 531 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr, | |
| 532 bool throw_monitor_exception, | |
| 533 bool install_monitor_exception, | |
| 534 bool notify_jvmdi) { | |
| 535 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result | |
| 536 // check if synchronized method | |
| 537 Label unlocked, unlock, no_unlock; | |
| 538 | |
| 539 get_thread(rcx); | |
| 540 const Address do_not_unlock_if_synchronized(rcx, | |
| 541 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 542 | |
| 543 movbool(rbx, do_not_unlock_if_synchronized); | |
| 304 | 544 mov(rdi,rbx); |
| 0 | 545 movbool(do_not_unlock_if_synchronized, false); // reset the flag |
| 546 | |
| 304 | 547 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags |
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548 movl(rcx, Address(rbx, Method::access_flags_offset())); |
| 0 | 549 |
| 550 testl(rcx, JVM_ACC_SYNCHRONIZED); | |
| 551 jcc(Assembler::zero, unlocked); | |
| 552 | |
| 553 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
| 554 // is set. | |
| 304 | 555 mov(rcx,rdi); |
| 0 | 556 testbool(rcx); |
| 557 jcc(Assembler::notZero, no_unlock); | |
| 558 | |
| 559 // unlock monitor | |
| 560 push(state); // save result | |
| 561 | |
| 562 // BasicObjectLock will be first in list, since this is a synchronized method. However, need | |
| 563 // to check that the object has not been unlocked by an explicit monitorexit bytecode. | |
| 564 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock)); | |
| 304 | 565 lea (rdx, monitor); // address of first monitor |
| 0 | 566 |
| 304 | 567 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); |
| 568 testptr(rax, rax); | |
| 569 jcc (Assembler::notZero, unlock); | |
| 0 | 570 |
| 571 pop(state); | |
| 572 if (throw_monitor_exception) { | |
| 573 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 574 | |
| 575 // Entry already unlocked, need to throw exception | |
| 576 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 577 should_not_reach_here(); | |
| 578 } else { | |
| 579 // Monitor already unlocked during a stack unroll. | |
| 580 // If requested, install an illegal_monitor_state_exception. | |
| 581 // Continue with stack unrolling. | |
| 582 if (install_monitor_exception) { | |
| 583 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 584 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 585 } | |
| 586 jmp(unlocked); | |
| 587 } | |
| 588 | |
| 589 bind(unlock); | |
| 590 unlock_object(rdx); | |
| 591 pop(state); | |
| 592 | |
| 593 // Check that for block-structured locking (i.e., that all locked objects has been unlocked) | |
| 594 bind(unlocked); | |
| 595 | |
| 596 // rax, rdx: Might contain return value | |
| 597 | |
| 598 // Check that all monitors are unlocked | |
| 599 { | |
| 600 Label loop, exception, entry, restart; | |
| 601 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 602 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 603 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 604 | |
| 605 bind(restart); | |
| 304 | 606 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry |
| 607 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block | |
| 0 | 608 jmp(entry); |
| 609 | |
| 610 // Entry already locked, need to throw exception | |
| 611 bind(exception); | |
| 612 | |
| 613 if (throw_monitor_exception) { | |
| 614 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 615 | |
| 616 // Throw exception | |
| 617 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 618 should_not_reach_here(); | |
| 619 } else { | |
| 620 // Stack unrolling. Unlock object and install illegal_monitor_exception | |
| 621 // Unlock does not block, so don't have to worry about the frame | |
| 622 | |
| 623 push(state); | |
| 304 | 624 mov(rdx, rcx); |
| 0 | 625 unlock_object(rdx); |
| 626 pop(state); | |
| 627 | |
| 628 if (install_monitor_exception) { | |
| 629 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow | |
| 630 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 631 } | |
| 632 | |
| 633 jmp(restart); | |
| 634 } | |
| 635 | |
| 636 bind(loop); | |
| 304 | 637 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used |
| 0 | 638 jcc(Assembler::notEqual, exception); |
| 639 | |
| 304 | 640 addptr(rcx, entry_size); // otherwise advance to next entry |
| 0 | 641 bind(entry); |
| 304 | 642 cmpptr(rcx, rbx); // check if bottom reached |
| 0 | 643 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 644 } | |
| 645 | |
| 646 bind(no_unlock); | |
| 647 | |
| 648 // jvmti support | |
| 649 if (notify_jvmdi) { | |
| 650 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
| 651 } else { | |
| 652 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
| 653 } | |
| 654 | |
| 655 // remove activation | |
| 304 | 656 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp |
| 0 | 657 leave(); // remove frame anchor |
| 304 | 658 pop(ret_addr); // get return address |
| 659 mov(rsp, rbx); // set sp to sender sp | |
| 0 | 660 if (UseSSE) { |
| 661 // float and double are returned in xmm register in SSE-mode | |
| 662 if (state == ftos && UseSSE >= 1) { | |
| 304 | 663 subptr(rsp, wordSize); |
| 0 | 664 fstp_s(Address(rsp, 0)); |
| 665 movflt(xmm0, Address(rsp, 0)); | |
| 304 | 666 addptr(rsp, wordSize); |
| 0 | 667 } else if (state == dtos && UseSSE >= 2) { |
| 304 | 668 subptr(rsp, 2*wordSize); |
| 0 | 669 fstp_d(Address(rsp, 0)); |
| 670 movdbl(xmm0, Address(rsp, 0)); | |
| 304 | 671 addptr(rsp, 2*wordSize); |
| 0 | 672 } |
| 673 } | |
| 674 } | |
| 675 | |
| 676 #endif /* !CC_INTERP */ | |
| 677 | |
| 678 | |
| 679 // Lock object | |
| 680 // | |
| 681 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must | |
| 682 // be initialized with object to lock | |
| 683 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
| 684 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 685 | |
| 686 if (UseHeavyMonitors) { | |
| 687 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 688 } else { | |
| 689 | |
| 690 Label done; | |
| 691 | |
| 692 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 693 const Register obj_reg = rcx; // Will contain the oop | |
| 694 | |
| 695 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
| 696 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
| 697 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes(); | |
| 698 | |
| 699 Label slow_case; | |
| 700 | |
| 701 // Load object pointer into obj_reg %rcx | |
| 304 | 702 movptr(obj_reg, Address(lock_reg, obj_offset)); |
| 0 | 703 |
| 704 if (UseBiasedLocking) { | |
| 705 // Note: we use noreg for the temporary register since it's hard | |
| 706 // to come up with a free register on all incoming code paths | |
| 707 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case); | |
| 708 } | |
| 709 | |
| 710 // Load immediate 1 into swap_reg %rax, | |
| 304 | 711 movptr(swap_reg, (int32_t)1); |
| 0 | 712 |
| 713 // Load (object->mark() | 1) into swap_reg %rax, | |
| 304 | 714 orptr(swap_reg, Address(obj_reg, 0)); |
| 0 | 715 |
| 716 // Save (object->mark() | 1) into BasicLock's displaced header | |
| 304 | 717 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 718 |
| 719 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock"); | |
| 720 if (os::is_MP()) { | |
| 721 lock(); | |
| 722 } | |
| 304 | 723 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
| 0 | 724 if (PrintBiasedLockingStatistics) { |
| 725 cond_inc32(Assembler::zero, | |
| 726 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 727 } | |
| 728 jcc(Assembler::zero, done); | |
| 729 | |
| 730 // Test if the oopMark is an obvious stack pointer, i.e., | |
| 731 // 1) (mark & 3) == 0, and | |
| 732 // 2) rsp <= mark < mark + os::pagesize() | |
| 733 // | |
| 734 // These 3 tests can be done by evaluating the following | |
| 735 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
| 736 // assuming both stack pointer and pagesize have their | |
| 737 // least significant 2 bits clear. | |
| 738 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
| 304 | 739 subptr(swap_reg, rsp); |
| 740 andptr(swap_reg, 3 - os::vm_page_size()); | |
| 0 | 741 |
| 742 // Save the test result, for recursive case, the result is zero | |
| 304 | 743 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 744 |
| 745 if (PrintBiasedLockingStatistics) { | |
| 746 cond_inc32(Assembler::zero, | |
| 747 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 748 } | |
| 749 jcc(Assembler::zero, done); | |
| 750 | |
| 751 bind(slow_case); | |
| 752 | |
| 753 // Call the runtime routine for slow case | |
| 754 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg); | |
| 755 | |
| 756 bind(done); | |
| 757 } | |
| 758 } | |
| 759 | |
| 760 | |
| 761 // Unlocks an object. Used in monitorexit bytecode and remove_activation. | |
| 762 // | |
| 763 // Argument: rdx : Points to BasicObjectLock structure for lock | |
| 764 // Throw an IllegalMonitorException if object is not locked by current thread | |
| 765 // | |
| 766 // Uses: rax, rbx, rcx, rdx | |
| 767 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
| 768 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx"); | |
| 769 | |
| 770 if (UseHeavyMonitors) { | |
| 771 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); | |
| 772 } else { | |
| 773 Label done; | |
| 774 | |
| 775 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
| 776 const Register header_reg = rbx; // Will contain the old oopMark | |
| 777 const Register obj_reg = rcx; // Will contain the oop | |
| 778 | |
| 779 save_bcp(); // Save in case of exception | |
| 780 | |
| 781 // Convert from BasicObjectLock structure to object and BasicLock structure | |
| 782 // Store the BasicLock address into %rax, | |
| 304 | 783 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
| 0 | 784 |
| 785 // Load oop into obj_reg(%rcx) | |
| 304 | 786 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ())); |
| 0 | 787 |
| 788 // Free entry | |
|
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789 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD); |
| 0 | 790 |
| 791 if (UseBiasedLocking) { | |
| 792 biased_locking_exit(obj_reg, header_reg, done); | |
| 793 } | |
| 794 | |
| 795 // Load the old header from BasicLock structure | |
| 304 | 796 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes())); |
| 0 | 797 |
| 798 // Test for recursion | |
| 304 | 799 testptr(header_reg, header_reg); |
| 0 | 800 |
| 801 // zero for recursive case | |
| 802 jcc(Assembler::zero, done); | |
| 803 | |
| 804 // Atomic swap back the old header | |
| 805 if (os::is_MP()) lock(); | |
| 304 | 806 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
| 0 | 807 |
| 808 // zero for recursive case | |
| 809 jcc(Assembler::zero, done); | |
| 810 | |
| 811 // Call the runtime routine for slow case. | |
| 304 | 812 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj |
| 0 | 813 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg); |
| 814 | |
| 815 bind(done); | |
| 816 | |
| 817 restore_bcp(); | |
| 818 } | |
| 819 } | |
| 820 | |
| 821 | |
| 822 #ifndef CC_INTERP | |
| 823 | |
| 824 // Test ImethodDataPtr. If it is null, continue at the specified label | |
| 825 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) { | |
| 826 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 827 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
| 828 testptr(mdp, mdp); | |
| 0 | 829 jcc(Assembler::zero, zero_continue); |
| 830 } | |
| 831 | |
| 832 | |
| 833 // Set the method data pointer for the current bcp. | |
| 834 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 835 assert(ProfileInterpreter, "must be profiling interpreter"); | |
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836 Label set_mdp; |
| 304 | 837 push(rax); |
| 838 push(rbx); | |
| 0 | 839 |
| 840 get_method(rbx); | |
| 841 // Test MDO to avoid the call if it is NULL. | |
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842 movptr(rax, Address(rbx, in_bytes(Method::method_data_offset()))); |
| 304 | 843 testptr(rax, rax); |
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844 jcc(Assembler::zero, set_mdp); |
| 0 | 845 // rbx,: method |
| 846 // rsi: bcp | |
| 847 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi); | |
| 848 // rax,: mdi | |
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849 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
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850 movptr(rbx, Address(rbx, in_bytes(Method::method_data_offset()))); |
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851 addptr(rbx, in_bytes(MethodData::data_offset())); |
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852 addptr(rax, rbx); |
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853 bind(set_mdp); |
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854 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
| 304 | 855 pop(rbx); |
| 856 pop(rax); | |
| 0 | 857 } |
| 858 | |
| 859 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 860 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 861 #ifdef ASSERT | |
| 862 Label verify_continue; | |
| 304 | 863 push(rax); |
| 864 push(rbx); | |
| 865 push(rcx); | |
| 866 push(rdx); | |
| 0 | 867 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue |
| 868 get_method(rbx); | |
| 869 | |
| 870 // If the mdp is valid, it will point to a DataLayout header which is | |
| 871 // consistent with the bcp. The converse is highly probable also. | |
|
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872 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset()))); |
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873 addptr(rdx, Address(rbx, Method::const_offset())); |
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874 lea(rdx, Address(rdx, ConstMethod::codes_offset())); |
| 304 | 875 cmpptr(rdx, rsi); |
| 0 | 876 jcc(Assembler::equal, verify_continue); |
| 877 // rbx,: method | |
| 878 // rsi: bcp | |
| 879 // rcx: mdp | |
| 880 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx); | |
| 881 bind(verify_continue); | |
| 304 | 882 pop(rdx); |
| 883 pop(rcx); | |
| 884 pop(rbx); | |
| 885 pop(rax); | |
| 0 | 886 #endif // ASSERT |
| 887 } | |
| 888 | |
| 889 | |
| 890 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) { | |
| 304 | 891 // %%% this seems to be used to store counter data which is surely 32bits |
| 892 // however 64bit side stores 64 bits which seems wrong | |
| 0 | 893 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 894 Address data(mdp_in, constant); | |
| 304 | 895 movptr(data, value); |
| 0 | 896 } |
| 897 | |
| 898 | |
| 899 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 900 int constant, | |
| 901 bool decrement) { | |
| 902 // Counter address | |
| 903 Address data(mdp_in, constant); | |
| 904 | |
| 905 increment_mdp_data_at(data, decrement); | |
| 906 } | |
| 907 | |
| 908 | |
| 909 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
| 910 bool decrement) { | |
| 911 | |
| 912 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 913 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 914 | |
| 304 | 915 // %%% 64bit treats this as 64 bit which seems unlikely |
| 0 | 916 if (decrement) { |
| 917 // Decrement the register. Set condition codes. | |
| 918 addl(data, -DataLayout::counter_increment); | |
| 919 // If the decrement causes the counter to overflow, stay negative | |
| 920 Label L; | |
| 921 jcc(Assembler::negative, L); | |
| 922 addl(data, DataLayout::counter_increment); | |
| 923 bind(L); | |
| 924 } else { | |
| 925 assert(DataLayout::counter_increment == 1, | |
| 926 "flow-free idiom only works with 1"); | |
| 927 // Increment the register. Set carry flag. | |
| 928 addl(data, DataLayout::counter_increment); | |
| 929 // If the increment causes the counter to overflow, pull back by 1. | |
| 930 sbbl(data, 0); | |
| 931 } | |
| 932 } | |
| 933 | |
| 934 | |
| 935 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 936 Register reg, | |
| 937 int constant, | |
| 938 bool decrement) { | |
| 939 Address data(mdp_in, reg, Address::times_1, constant); | |
| 940 | |
| 941 increment_mdp_data_at(data, decrement); | |
| 942 } | |
| 943 | |
| 944 | |
| 945 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) { | |
| 946 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 947 int header_offset = in_bytes(DataLayout::header_offset()); | |
| 948 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
| 949 // Set the flag | |
| 950 orl(Address(mdp_in, header_offset), header_bits); | |
| 951 } | |
| 952 | |
| 953 | |
| 954 | |
| 955 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
| 956 int offset, | |
| 957 Register value, | |
| 958 Register test_value_out, | |
| 959 Label& not_equal_continue) { | |
| 960 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 961 if (test_value_out == noreg) { | |
| 304 | 962 cmpptr(value, Address(mdp_in, offset)); |
| 0 | 963 } else { |
| 964 // Put the test value into a register, so caller can use it: | |
| 304 | 965 movptr(test_value_out, Address(mdp_in, offset)); |
| 966 cmpptr(test_value_out, value); | |
| 0 | 967 } |
| 968 jcc(Assembler::notEqual, not_equal_continue); | |
| 969 } | |
| 970 | |
| 971 | |
| 972 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) { | |
| 973 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 974 Address disp_address(mdp_in, offset_of_disp); | |
| 304 | 975 addptr(mdp_in,disp_address); |
| 976 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 977 } |
| 978 | |
| 979 | |
| 980 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) { | |
| 981 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 982 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
| 304 | 983 addptr(mdp_in, disp_address); |
| 984 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 985 } |
| 986 | |
| 987 | |
| 988 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) { | |
| 989 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 990 addptr(mdp_in, constant); |
| 991 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 992 } |
| 993 | |
| 994 | |
| 995 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
| 996 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 997 push(return_bci); // save/restore across call_VM |
| 0 | 998 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci); |
| 304 | 999 pop(return_bci); |
| 0 | 1000 } |
| 1001 | |
| 1002 | |
| 1003 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) { | |
| 1004 if (ProfileInterpreter) { | |
| 1005 Label profile_continue; | |
| 1006 | |
| 1007 // If no method data exists, go to profile_continue. | |
| 1008 // Otherwise, assign to mdp | |
| 1009 test_method_data_pointer(mdp, profile_continue); | |
| 1010 | |
| 1011 // We are taking a branch. Increment the taken count. | |
| 1012 // We inline increment_mdp_data_at to return bumped_count in a register | |
| 1013 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
| 1014 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
| 304 | 1015 |
| 1016 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit | |
| 0 | 1017 movl(bumped_count,data); |
| 1018 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" ); | |
| 1019 addl(bumped_count, DataLayout::counter_increment); | |
| 1020 sbbl(bumped_count, 0); | |
| 1021 movl(data,bumped_count); // Store back out | |
| 1022 | |
| 1023 // The method data pointer needs to be updated to reflect the new target. | |
| 1024 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
| 1025 bind (profile_continue); | |
| 1026 } | |
| 1027 } | |
| 1028 | |
| 1029 | |
| 1030 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
| 1031 if (ProfileInterpreter) { | |
| 1032 Label profile_continue; | |
| 1033 | |
| 1034 // If no method data exists, go to profile_continue. | |
| 1035 test_method_data_pointer(mdp, profile_continue); | |
| 1036 | |
| 1037 // We are taking a branch. Increment the not taken count. | |
| 1038 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
| 1039 | |
| 1040 // The method data pointer needs to be updated to correspond to the next bytecode | |
| 1041 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
| 1042 bind (profile_continue); | |
| 1043 } | |
| 1044 } | |
| 1045 | |
| 1046 | |
| 1047 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
| 1048 if (ProfileInterpreter) { | |
| 1049 Label profile_continue; | |
| 1050 | |
| 1051 // If no method data exists, go to profile_continue. | |
| 1052 test_method_data_pointer(mdp, profile_continue); | |
| 1053 | |
| 1054 // We are making a call. Increment the count. | |
| 1055 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1056 | |
| 1057 // The method data pointer needs to be updated to reflect the new target. | |
| 1058 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
| 1059 bind (profile_continue); | |
| 1060 } | |
| 1061 } | |
| 1062 | |
| 1063 | |
| 1064 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
| 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 | |
| 1071 // We are making a call. Increment the count. | |
| 1072 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1073 | |
| 1074 // The method data pointer needs to be updated to reflect the new target. | |
| 1075 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); | |
| 1076 bind (profile_continue); | |
| 1077 } | |
| 1078 } | |
| 1079 | |
| 1080 | |
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1081 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, |
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1082 Register reg2, |
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1083 bool receiver_can_be_null) { |
| 0 | 1084 if (ProfileInterpreter) { |
| 1085 Label profile_continue; | |
| 1086 | |
| 1087 // If no method data exists, go to profile_continue. | |
| 1088 test_method_data_pointer(mdp, profile_continue); | |
| 1089 | |
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1090 Label skip_receiver_profile; |
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1091 if (receiver_can_be_null) { |
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1092 Label not_null; |
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1093 testptr(receiver, receiver); |
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1094 jccb(Assembler::notZero, not_null); |
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1095 // We are making a call. Increment the count for null receiver. |
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1096 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1097 jmp(skip_receiver_profile); |
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1098 bind(not_null); |
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1099 } |
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1100 |
| 0 | 1101 // Record the receiver type. |
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1102 record_klass_in_profile(receiver, mdp, reg2, true); |
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1103 bind(skip_receiver_profile); |
| 0 | 1104 |
| 1105 // The method data pointer needs to be updated to reflect the new target. | |
| 1106 update_mdp_by_constant(mdp, | |
| 1107 in_bytes(VirtualCallData:: | |
| 1108 virtual_call_data_size())); | |
| 1109 bind(profile_continue); | |
| 1110 } | |
| 1111 } | |
| 1112 | |
| 1113 | |
| 1114 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1115 Register receiver, Register mdp, | |
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1116 Register reg2, int start_row, |
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1117 Label& done, bool is_virtual_call) { |
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1118 if (TypeProfileWidth == 0) { |
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1119 if (is_virtual_call) { |
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1120 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1121 } |
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1122 return; |
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1123 } |
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1124 |
| 0 | 1125 int last_row = VirtualCallData::row_limit() - 1; |
| 1126 assert(start_row <= last_row, "must be work left to do"); | |
| 1127 // Test this row for both the receiver and for null. | |
| 1128 // Take any of three different outcomes: | |
| 1129 // 1. found receiver => increment count and goto done | |
| 1130 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1131 // 3. found something else => keep looking for cases 1 and 2 | |
| 1132 // Case 3 is handled by a recursive call. | |
| 1133 for (int row = start_row; row <= last_row; row++) { | |
| 1134 Label next_test; | |
| 1135 bool test_for_null_also = (row == start_row); | |
| 1136 | |
| 1137 // See if the receiver is receiver[n]. | |
| 1138 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1139 test_mdp_data_at(mdp, recvr_offset, receiver, | |
| 1140 (test_for_null_also ? reg2 : noreg), | |
| 1141 next_test); | |
| 1142 // (Reg2 now contains the receiver from the CallData.) | |
| 1143 | |
| 1144 // The receiver is receiver[n]. Increment count[n]. | |
| 1145 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1146 increment_mdp_data_at(mdp, count_offset); | |
| 1147 jmp(done); | |
| 1148 bind(next_test); | |
| 1149 | |
| 1150 if (row == start_row) { | |
|
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1151 Label found_null; |
| 0 | 1152 // Failed the equality check on receiver[n]... Test for null. |
| 304 | 1153 testptr(reg2, reg2); |
| 0 | 1154 if (start_row == last_row) { |
| 1155 // The only thing left to do is handle the null case. | |
|
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1156 if (is_virtual_call) { |
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1157 jccb(Assembler::zero, found_null); |
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1158 // Receiver did not match any saved receiver and there is no empty row for it. |
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1159 // Increment total counter to indicate polymorphic case. |
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1160 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1161 jmp(done); |
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1162 bind(found_null); |
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1163 } else { |
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1164 jcc(Assembler::notZero, done); |
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1165 } |
| 0 | 1166 break; |
| 1167 } | |
| 1168 // Since null is rare, make it be the branch-taken case. | |
| 1169 jcc(Assembler::zero, found_null); | |
| 1170 | |
| 1171 // Put all the "Case 3" tests here. | |
|
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1172 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
| 0 | 1173 |
| 1174 // Found a null. Keep searching for a matching receiver, | |
| 1175 // but remember that this is an empty (unused) slot. | |
| 1176 bind(found_null); | |
| 1177 } | |
| 1178 } | |
| 1179 | |
| 1180 // In the fall-through case, we found no matching receiver, but we | |
| 1181 // observed the receiver[start_row] is NULL. | |
| 1182 | |
| 1183 // Fill in the receiver field and increment the count. | |
| 1184 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1185 set_mdp_data_at(mdp, recvr_offset, receiver); | |
| 1186 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 3960 | 1187 movptr(reg2, (intptr_t)DataLayout::counter_increment); |
| 0 | 1188 set_mdp_data_at(mdp, count_offset, reg2); |
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1189 if (start_row > 0) { |
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1190 jmp(done); |
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1191 } |
| 0 | 1192 } |
| 1193 | |
| 1194 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
|
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1195 Register mdp, Register reg2, |
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1196 bool is_virtual_call) { |
| 0 | 1197 assert(ProfileInterpreter, "must be profiling"); |
| 1198 Label done; | |
| 1199 | |
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1200 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
| 0 | 1201 |
| 1202 bind (done); | |
| 1203 } | |
| 1204 | |
| 1205 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) { | |
| 1206 if (ProfileInterpreter) { | |
| 1207 Label profile_continue; | |
| 1208 uint row; | |
| 1209 | |
| 1210 // If no method data exists, go to profile_continue. | |
| 1211 test_method_data_pointer(mdp, profile_continue); | |
| 1212 | |
| 1213 // Update the total ret count. | |
| 1214 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1215 | |
| 1216 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1217 Label next_test; | |
| 1218 | |
| 1219 // See if return_bci is equal to bci[n]: | |
| 1220 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci, | |
| 1221 noreg, next_test); | |
| 1222 | |
| 1223 // return_bci is equal to bci[n]. Increment the count. | |
| 1224 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
| 1225 | |
| 1226 // The method data pointer needs to be updated to reflect the new target. | |
| 1227 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row))); | |
| 1228 jmp(profile_continue); | |
| 1229 bind(next_test); | |
| 1230 } | |
| 1231 | |
| 1232 update_mdp_for_ret(return_bci); | |
| 1233 | |
| 1234 bind (profile_continue); | |
| 1235 } | |
| 1236 } | |
| 1237 | |
| 1238 | |
| 1239 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
| 1240 if (ProfileInterpreter) { | |
| 1241 Label profile_continue; | |
| 1242 | |
| 1243 // If no method data exists, go to profile_continue. | |
| 1244 test_method_data_pointer(mdp, profile_continue); | |
| 1245 | |
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1246 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1247 |
| 0 | 1248 // The method data pointer needs to be updated. |
| 1249 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1250 if (TypeProfileCasts) { | |
| 1251 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1252 } | |
| 1253 update_mdp_by_constant(mdp, mdp_delta); | |
| 1254 | |
| 1255 bind (profile_continue); | |
| 1256 } | |
| 1257 } | |
| 1258 | |
| 1259 | |
| 1260 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
| 1261 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1262 Label profile_continue; | |
| 1263 | |
| 1264 // If no method data exists, go to profile_continue. | |
| 1265 test_method_data_pointer(mdp, profile_continue); | |
| 1266 | |
| 1267 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1268 // Back up the address, since we have already bumped the mdp. | |
| 1269 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1270 | |
| 1271 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1272 increment_mdp_data_at(mdp, count_offset, true); | |
| 1273 | |
| 1274 bind (profile_continue); | |
| 1275 } | |
| 1276 } | |
| 1277 | |
| 1278 | |
| 1279 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) | |
| 1280 { | |
| 1281 if (ProfileInterpreter) { | |
| 1282 Label profile_continue; | |
| 1283 | |
| 1284 // If no method data exists, go to profile_continue. | |
| 1285 test_method_data_pointer(mdp, profile_continue); | |
| 1286 | |
| 1287 // The method data pointer needs to be updated. | |
| 1288 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1289 if (TypeProfileCasts) { | |
| 1290 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1291 | |
| 1292 // Record the object type. | |
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1293 record_klass_in_profile(klass, mdp, reg2, false); |
| 0 | 1294 assert(reg2 == rdi, "we know how to fix this blown reg"); |
| 1295 restore_locals(); // Restore EDI | |
| 1296 } | |
| 1297 update_mdp_by_constant(mdp, mdp_delta); | |
| 1298 | |
| 1299 bind(profile_continue); | |
| 1300 } | |
| 1301 } | |
| 1302 | |
| 1303 | |
| 1304 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
| 1305 if (ProfileInterpreter) { | |
| 1306 Label profile_continue; | |
| 1307 | |
| 1308 // If no method data exists, go to profile_continue. | |
| 1309 test_method_data_pointer(mdp, profile_continue); | |
| 1310 | |
| 1311 // Update the default case count | |
| 1312 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset())); | |
| 1313 | |
| 1314 // The method data pointer needs to be updated. | |
| 1315 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset())); | |
| 1316 | |
| 1317 bind (profile_continue); | |
| 1318 } | |
| 1319 } | |
| 1320 | |
| 1321 | |
| 1322 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) { | |
| 1323 if (ProfileInterpreter) { | |
| 1324 Label profile_continue; | |
| 1325 | |
| 1326 // If no method data exists, go to profile_continue. | |
| 1327 test_method_data_pointer(mdp, profile_continue); | |
| 1328 | |
| 1329 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes() | |
| 3960 | 1330 movptr(reg2, (intptr_t)in_bytes(MultiBranchData::per_case_size())); |
| 304 | 1331 // index is positive and so should have correct value if this code were |
| 1332 // used on 64bits | |
| 1333 imulptr(index, reg2); | |
| 1334 addptr(index, in_bytes(MultiBranchData::case_array_offset())); | |
| 0 | 1335 |
| 1336 // Update the case count | |
| 1337 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset())); | |
| 1338 | |
| 1339 // The method data pointer needs to be updated. | |
| 1340 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset())); | |
| 1341 | |
| 1342 bind (profile_continue); | |
| 1343 } | |
| 1344 } | |
| 1345 | |
| 1346 #endif // !CC_INTERP | |
| 1347 | |
| 1348 | |
| 1349 | |
| 1350 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { | |
| 1351 if (state == atos) MacroAssembler::verify_oop(reg); | |
| 1352 } | |
| 1353 | |
| 1354 | |
| 1355 #ifndef CC_INTERP | |
| 1356 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 1357 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth); | |
| 1358 } | |
| 1359 | |
| 1360 #endif /* CC_INTERP */ | |
| 1361 | |
| 1362 | |
| 1363 void InterpreterMacroAssembler::notify_method_entry() { | |
| 1364 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1365 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1366 // the code to check if the event should be sent. | |
| 1367 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1368 Label L; | |
| 1369 get_thread(rcx); | |
| 1370 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1371 testl(rcx,rcx); | |
| 1372 jcc(Assembler::zero, L); | |
| 1373 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry)); | |
| 1374 bind(L); | |
| 1375 } | |
| 1376 | |
| 1377 { | |
| 1378 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 1379 get_thread(rcx); | |
| 1380 get_method(rbx); | |
| 1381 call_VM_leaf( | |
| 1382 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx); | |
| 1383 } | |
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1385 // RedefineClasses() tracing support for obsolete method entry |
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1386 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1387 get_thread(rcx); |
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1388 get_method(rbx); |
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1389 call_VM_leaf( |
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1390 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1391 rcx, rbx); |
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1392 } |
| 0 | 1393 } |
| 1394 | |
| 1395 | |
| 1396 void InterpreterMacroAssembler::notify_method_exit( | |
| 1397 TosState state, NotifyMethodExitMode mode) { | |
| 1398 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1399 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1400 // the code to check if the event should be sent. | |
| 1401 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
| 1402 Label L; | |
| 1403 // Note: frame::interpreter_frame_result has a dependency on how the | |
| 1404 // method result is saved across the call to post_method_exit. If this | |
| 1405 // is changed then the interpreter_frame_result implementation will | |
| 1406 // need to be updated too. | |
| 1407 | |
| 1408 // For c++ interpreter the result is always stored at a known location in the frame | |
| 1409 // template interpreter will leave it on the top of the stack. | |
| 1410 NOT_CC_INTERP(push(state);) | |
| 1411 get_thread(rcx); | |
| 1412 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset())); | |
| 1413 testl(rcx,rcx); | |
| 1414 jcc(Assembler::zero, L); | |
| 1415 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
| 1416 bind(L); | |
| 1417 NOT_CC_INTERP(pop(state);) | |
| 1418 } | |
| 1419 | |
| 1420 { | |
| 1421 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0); | |
| 304 | 1422 NOT_CC_INTERP(push(state)); |
| 0 | 1423 get_thread(rbx); |
| 1424 get_method(rcx); | |
| 1425 call_VM_leaf( | |
| 1426 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
| 1427 rbx, rcx); | |
| 304 | 1428 NOT_CC_INTERP(pop(state)); |
| 0 | 1429 } |
| 1430 } | |
| 1783 | 1431 |
| 1432 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
| 1433 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
| 1434 int increment, int mask, | |
| 1435 Register scratch, bool preloaded, | |
| 1436 Condition cond, Label* where) { | |
| 1437 if (!preloaded) { | |
| 1438 movl(scratch, counter_addr); | |
| 1439 } | |
| 1440 incrementl(scratch, increment); | |
| 1441 movl(counter_addr, scratch); | |
| 1442 andl(scratch, mask); | |
| 1443 jcc(cond, *where); | |
| 1444 } |