Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_64.cpp @ 10408:836a62f43af9
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Wed, 19 Jun 2013 10:45:56 +0200 |
| parents | c76b43ed5089 aeaca88565e6 |
| children | 63e44cdabb91 |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2003, 2013, 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_64.hpp" | |
| 27 #include "interpreter/interpreter.hpp" | |
| 28 #include "interpreter/interpreterRuntime.hpp" | |
| 29 #include "oops/arrayOop.hpp" | |
| 30 #include "oops/markOop.hpp" | |
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31 #include "oops/methodData.hpp" |
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32 #include "oops/method.hpp" |
| 1972 | 33 #include "prims/jvmtiExport.hpp" |
| 34 #include "prims/jvmtiRedefineClassesTrace.hpp" | |
| 35 #include "prims/jvmtiThreadState.hpp" | |
| 36 #include "runtime/basicLock.hpp" | |
| 37 #include "runtime/biasedLocking.hpp" | |
| 38 #include "runtime/sharedRuntime.hpp" | |
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39 #include "runtime/thread.inline.hpp" |
| 0 | 40 |
| 41 | |
| 42 // Implementation of InterpreterMacroAssembler | |
| 43 | |
| 304 | 44 #ifdef CC_INTERP |
| 45 void InterpreterMacroAssembler::get_method(Register reg) { | |
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46 movptr(reg, Address(rbp, -((int)sizeof(BytecodeInterpreter) + 2 * wordSize))); |
| 304 | 47 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method))); |
| 48 } | |
| 49 #endif // CC_INTERP | |
| 50 | |
| 51 #ifndef CC_INTERP | |
| 52 | |
| 0 | 53 void InterpreterMacroAssembler::call_VM_leaf_base(address entry_point, |
| 54 int number_of_arguments) { | |
| 55 // interpreter specific | |
| 56 // | |
| 57 // Note: No need to save/restore bcp & locals (r13 & r14) pointer | |
| 58 // since these are callee saved registers and no blocking/ | |
| 59 // GC can happen in leaf calls. | |
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60 // Further Note: DO NOT save/restore bcp/locals. If a caller has |
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61 // already saved them so that it can use esi/edi as temporaries |
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62 // then a save/restore here will DESTROY the copy the caller |
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63 // saved! There used to be a save_bcp() that only happened in |
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64 // the ASSERT path (no restore_bcp). Which caused bizarre failures |
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65 // when jvm built with ASSERTs. |
| 0 | 66 #ifdef ASSERT |
| 67 { | |
| 68 Label L; | |
| 304 | 69 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 70 jcc(Assembler::equal, L); |
| 71 stop("InterpreterMacroAssembler::call_VM_leaf_base:" | |
| 72 " last_sp != NULL"); | |
| 73 bind(L); | |
| 74 } | |
| 75 #endif | |
| 76 // super call | |
| 77 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments); | |
| 78 // interpreter specific | |
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79 // Used to ASSERT that r13/r14 were equal to frame's bcp/locals |
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80 // but since they may not have been saved (and we don't want to |
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81 // save thme here (see note above) the assert is invalid. |
| 0 | 82 } |
| 83 | |
| 84 void InterpreterMacroAssembler::call_VM_base(Register oop_result, | |
| 85 Register java_thread, | |
| 86 Register last_java_sp, | |
| 87 address entry_point, | |
| 88 int number_of_arguments, | |
| 89 bool check_exceptions) { | |
| 90 // interpreter specific | |
| 91 // | |
| 92 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't | |
| 93 // really make a difference for these runtime calls, since they are | |
| 94 // slow anyway. Btw., bcp must be saved/restored since it may change | |
| 95 // due to GC. | |
| 96 // assert(java_thread == noreg , "not expecting a precomputed java thread"); | |
| 97 save_bcp(); | |
| 98 #ifdef ASSERT | |
| 99 { | |
| 100 Label L; | |
| 304 | 101 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD); |
| 0 | 102 jcc(Assembler::equal, L); |
| 103 stop("InterpreterMacroAssembler::call_VM_leaf_base:" | |
| 104 " last_sp != NULL"); | |
| 105 bind(L); | |
| 106 } | |
| 107 #endif /* ASSERT */ | |
| 108 // super call | |
| 109 MacroAssembler::call_VM_base(oop_result, noreg, last_java_sp, | |
| 110 entry_point, number_of_arguments, | |
| 111 check_exceptions); | |
| 112 // interpreter specific | |
| 113 restore_bcp(); | |
| 114 restore_locals(); | |
| 115 } | |
| 116 | |
| 117 | |
| 118 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) { | |
| 119 if (JvmtiExport::can_pop_frame()) { | |
| 120 Label L; | |
| 121 // Initiate popframe handling only if it is not already being | |
| 122 // processed. If the flag has the popframe_processing bit set, it | |
| 123 // means that this code is called *during* popframe handling - we | |
| 124 // don't want to reenter. | |
| 125 // This method is only called just after the call into the vm in | |
| 126 // call_VM_base, so the arg registers are available. | |
| 127 movl(c_rarg0, Address(r15_thread, JavaThread::popframe_condition_offset())); | |
| 128 testl(c_rarg0, JavaThread::popframe_pending_bit); | |
| 129 jcc(Assembler::zero, L); | |
| 130 testl(c_rarg0, JavaThread::popframe_processing_bit); | |
| 131 jcc(Assembler::notZero, L); | |
| 132 // Call Interpreter::remove_activation_preserving_args_entry() to get the | |
| 133 // address of the same-named entrypoint in the generated interpreter code. | |
| 134 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry)); | |
| 135 jmp(rax); | |
| 136 bind(L); | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 | |
| 141 void InterpreterMacroAssembler::load_earlyret_value(TosState state) { | |
| 304 | 142 movptr(rcx, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 143 const Address tos_addr(rcx, JvmtiThreadState::earlyret_tos_offset()); |
| 144 const Address oop_addr(rcx, JvmtiThreadState::earlyret_oop_offset()); | |
| 145 const Address val_addr(rcx, JvmtiThreadState::earlyret_value_offset()); | |
| 146 switch (state) { | |
| 304 | 147 case atos: movptr(rax, oop_addr); |
| 148 movptr(oop_addr, (int32_t)NULL_WORD); | |
| 0 | 149 verify_oop(rax, state); break; |
| 304 | 150 case ltos: movptr(rax, val_addr); break; |
| 0 | 151 case btos: // fall through |
| 152 case ctos: // fall through | |
| 153 case stos: // fall through | |
| 154 case itos: movl(rax, val_addr); break; | |
| 155 case ftos: movflt(xmm0, val_addr); break; | |
| 156 case dtos: movdbl(xmm0, val_addr); break; | |
| 157 case vtos: /* nothing to do */ break; | |
| 158 default : ShouldNotReachHere(); | |
| 159 } | |
| 160 // Clean up tos value in the thread object | |
| 161 movl(tos_addr, (int) ilgl); | |
| 304 | 162 movl(val_addr, (int32_t) NULL_WORD); |
| 0 | 163 } |
| 164 | |
| 165 | |
| 166 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) { | |
| 167 if (JvmtiExport::can_force_early_return()) { | |
| 168 Label L; | |
| 304 | 169 movptr(c_rarg0, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
| 170 testptr(c_rarg0, c_rarg0); | |
| 0 | 171 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit; |
| 172 | |
| 173 // Initiate earlyret handling only if it is not already being processed. | |
| 174 // If the flag has the earlyret_processing bit set, it means that this code | |
| 175 // is called *during* earlyret handling - we don't want to reenter. | |
| 176 movl(c_rarg0, Address(c_rarg0, JvmtiThreadState::earlyret_state_offset())); | |
| 177 cmpl(c_rarg0, JvmtiThreadState::earlyret_pending); | |
| 178 jcc(Assembler::notEqual, L); | |
| 179 | |
| 180 // Call Interpreter::remove_activation_early_entry() to get the address of the | |
| 181 // same-named entrypoint in the generated interpreter code. | |
| 304 | 182 movptr(c_rarg0, Address(r15_thread, JavaThread::jvmti_thread_state_offset())); |
| 0 | 183 movl(c_rarg0, Address(c_rarg0, JvmtiThreadState::earlyret_tos_offset())); |
| 184 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), c_rarg0); | |
| 185 jmp(rax); | |
| 186 bind(L); | |
| 187 } | |
| 188 } | |
| 189 | |
| 190 | |
| 191 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp( | |
| 192 Register reg, | |
| 193 int bcp_offset) { | |
| 194 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode"); | |
| 195 movl(reg, Address(r13, bcp_offset)); | |
| 196 bswapl(reg); | |
| 197 shrl(reg, 16); | |
| 198 } | |
| 199 | |
| 200 | |
| 1108 | 201 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register index, |
| 202 int bcp_offset, | |
| 1565 | 203 size_t index_size) { |
| 1108 | 204 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode"); |
| 1565 | 205 if (index_size == sizeof(u2)) { |
| 1108 | 206 load_unsigned_short(index, Address(r13, bcp_offset)); |
| 1565 | 207 } else if (index_size == sizeof(u4)) { |
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208 assert(EnableInvokeDynamic, "giant index used only for JSR 292"); |
| 1108 | 209 movl(index, Address(r13, bcp_offset)); |
| 210 // Check if the secondary index definition is still ~x, otherwise | |
| 211 // we have to change the following assembler code to calculate the | |
| 212 // plain index. | |
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213 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line"); |
| 1108 | 214 notl(index); // convert to plain index |
| 1565 | 215 } else if (index_size == sizeof(u1)) { |
| 216 load_unsigned_byte(index, Address(r13, bcp_offset)); | |
| 217 } else { | |
| 218 ShouldNotReachHere(); | |
| 1108 | 219 } |
| 220 } | |
| 221 | |
| 222 | |
| 0 | 223 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, |
| 224 Register index, | |
| 1108 | 225 int bcp_offset, |
| 1565 | 226 size_t index_size) { |
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227 assert_different_registers(cache, index); |
| 1565 | 228 get_cache_index_at_bcp(index, bcp_offset, index_size); |
| 304 | 229 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 230 assert(sizeof(ConstantPoolCacheEntry) == 4 * wordSize, "adjust code below"); |
| 231 // convert from field index to ConstantPoolCacheEntry index | |
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232 assert(exact_log2(in_words(ConstantPoolCacheEntry::size())) == 2, "else change next line"); |
| 0 | 233 shll(index, 2); |
| 234 } | |
| 235 | |
| 236 | |
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237 void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache, |
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238 Register index, |
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239 Register bytecode, |
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240 int byte_no, |
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241 int bcp_offset, |
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242 size_t index_size) { |
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243 get_cache_and_index_at_bcp(cache, index, bcp_offset, index_size); |
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244 // We use a 32-bit load here since the layout of 64-bit words on |
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245 // little-endian machines allow us that. |
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246 movl(bytecode, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset())); |
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247 const int shift_count = (1 + byte_no) * BitsPerByte; |
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248 assert((byte_no == TemplateTable::f1_byte && shift_count == ConstantPoolCacheEntry::bytecode_1_shift) || |
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249 (byte_no == TemplateTable::f2_byte && shift_count == ConstantPoolCacheEntry::bytecode_2_shift), |
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250 "correct shift count"); |
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251 shrl(bytecode, shift_count); |
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252 assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask"); |
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253 andl(bytecode, ConstantPoolCacheEntry::bytecode_1_mask); |
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254 } |
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255 |
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256 |
| 0 | 257 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, |
| 258 Register tmp, | |
| 1108 | 259 int bcp_offset, |
| 1565 | 260 size_t index_size) { |
| 0 | 261 assert(cache != tmp, "must use different register"); |
| 1565 | 262 get_cache_index_at_bcp(tmp, bcp_offset, index_size); |
| 0 | 263 assert(sizeof(ConstantPoolCacheEntry) == 4 * wordSize, "adjust code below"); |
| 264 // convert from field index to ConstantPoolCacheEntry index | |
| 265 // and from word offset to byte offset | |
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266 assert(exact_log2(in_bytes(ConstantPoolCacheEntry::size_in_bytes())) == 2 + LogBytesPerWord, "else change next line"); |
| 0 | 267 shll(tmp, 2 + LogBytesPerWord); |
| 304 | 268 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize)); |
| 0 | 269 // skip past the header |
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270 addptr(cache, in_bytes(ConstantPoolCache::base_offset())); |
| 304 | 271 addptr(cache, tmp); // construct pointer to cache entry |
| 0 | 272 } |
| 273 | |
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274 void InterpreterMacroAssembler::get_method_counters(Register method, |
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275 Register mcs, Label& skip) { |
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276 Label has_counters; |
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277 movptr(mcs, Address(method, Method::method_counters_offset())); |
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278 testptr(mcs, mcs); |
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279 jcc(Assembler::notZero, has_counters); |
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280 call_VM(noreg, CAST_FROM_FN_PTR(address, |
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281 InterpreterRuntime::build_method_counters), method); |
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282 movptr(mcs, Address(method,Method::method_counters_offset())); |
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283 testptr(mcs, mcs); |
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284 jcc(Assembler::zero, skip); // No MethodCounters allocated, OutOfMemory |
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285 bind(has_counters); |
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286 } |
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287 |
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288 // Load object from cpool->resolved_references(index) |
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289 void InterpreterMacroAssembler::load_resolved_reference_at_index( |
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290 Register result, Register index) { |
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291 assert_different_registers(result, index); |
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292 // convert from field index to resolved_references() index and from |
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293 // word index to byte offset. Since this is a java object, it can be compressed |
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294 Register tmp = index; // reuse |
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295 shll(tmp, LogBytesPerHeapOop); |
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296 |
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297 get_constant_pool(result); |
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298 // load pointer for resolved_references[] objArray |
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299 movptr(result, Address(result, ConstantPool::resolved_references_offset_in_bytes())); |
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300 // JNIHandles::resolve(obj); |
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301 movptr(result, Address(result, 0)); |
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302 // Add in the index |
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303 addptr(result, tmp); |
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304 load_heap_oop(result, Address(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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305 } |
| 0 | 306 |
| 307 // Generate a subtype check: branch to ok_is_subtype if sub_klass is a | |
| 308 // subtype of super_klass. | |
| 309 // | |
| 310 // Args: | |
| 311 // rax: superklass | |
| 312 // Rsub_klass: subklass | |
| 313 // | |
| 314 // Kills: | |
| 315 // rcx, rdi | |
| 316 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, | |
| 317 Label& ok_is_subtype) { | |
| 318 assert(Rsub_klass != rax, "rax holds superklass"); | |
| 319 assert(Rsub_klass != r14, "r14 holds locals"); | |
| 320 assert(Rsub_klass != r13, "r13 holds bcp"); | |
| 321 assert(Rsub_klass != rcx, "rcx holds 2ndary super array length"); | |
| 322 assert(Rsub_klass != rdi, "rdi holds 2ndary super array scan ptr"); | |
| 323 | |
| 324 // Profile the not-null value's klass. | |
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325 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
| 0 | 326 |
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327 // Do the check. |
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328 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
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329 |
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330 // Profile the failure of the check. |
| 0 | 331 profile_typecheck_failed(rcx); // blows rcx |
| 332 } | |
| 333 | |
| 334 | |
| 304 | 335 |
| 0 | 336 // Java Expression Stack |
| 337 | |
| 338 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 304 | 339 pop(r); |
| 0 | 340 } |
| 341 | |
| 342 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 304 | 343 // XXX can't use pop currently, upper half non clean |
| 0 | 344 movl(r, Address(rsp, 0)); |
| 304 | 345 addptr(rsp, wordSize); |
| 0 | 346 } |
| 347 | |
| 348 void InterpreterMacroAssembler::pop_l(Register r) { | |
| 349 movq(r, Address(rsp, 0)); | |
| 1506 | 350 addptr(rsp, 2 * Interpreter::stackElementSize); |
| 0 | 351 } |
| 352 | |
| 353 void InterpreterMacroAssembler::pop_f(XMMRegister r) { | |
| 354 movflt(r, Address(rsp, 0)); | |
| 304 | 355 addptr(rsp, wordSize); |
| 0 | 356 } |
| 357 | |
| 358 void InterpreterMacroAssembler::pop_d(XMMRegister r) { | |
| 359 movdbl(r, Address(rsp, 0)); | |
| 1506 | 360 addptr(rsp, 2 * Interpreter::stackElementSize); |
| 0 | 361 } |
| 362 | |
| 363 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 304 | 364 push(r); |
| 0 | 365 } |
| 366 | |
| 367 void InterpreterMacroAssembler::push_i(Register r) { | |
| 304 | 368 push(r); |
| 0 | 369 } |
| 370 | |
| 371 void InterpreterMacroAssembler::push_l(Register r) { | |
| 1506 | 372 subptr(rsp, 2 * wordSize); |
| 0 | 373 movq(Address(rsp, 0), r); |
| 374 } | |
| 375 | |
| 376 void InterpreterMacroAssembler::push_f(XMMRegister r) { | |
| 304 | 377 subptr(rsp, wordSize); |
| 0 | 378 movflt(Address(rsp, 0), r); |
| 379 } | |
| 380 | |
| 381 void InterpreterMacroAssembler::push_d(XMMRegister r) { | |
| 1506 | 382 subptr(rsp, 2 * wordSize); |
| 0 | 383 movdbl(Address(rsp, 0), r); |
| 384 } | |
| 385 | |
| 386 void InterpreterMacroAssembler::pop(TosState state) { | |
| 387 switch (state) { | |
| 388 case atos: pop_ptr(); break; | |
| 389 case btos: | |
| 390 case ctos: | |
| 391 case stos: | |
| 392 case itos: pop_i(); break; | |
| 393 case ltos: pop_l(); break; | |
| 394 case ftos: pop_f(); break; | |
| 395 case dtos: pop_d(); break; | |
| 396 case vtos: /* nothing to do */ break; | |
| 397 default: ShouldNotReachHere(); | |
| 398 } | |
| 399 verify_oop(rax, state); | |
| 400 } | |
| 401 | |
| 402 void InterpreterMacroAssembler::push(TosState state) { | |
| 403 verify_oop(rax, state); | |
| 404 switch (state) { | |
| 405 case atos: push_ptr(); break; | |
| 406 case btos: | |
| 407 case ctos: | |
| 408 case stos: | |
| 409 case itos: push_i(); break; | |
| 410 case ltos: push_l(); break; | |
| 411 case ftos: push_f(); break; | |
| 412 case dtos: push_d(); break; | |
| 413 case vtos: /* nothing to do */ break; | |
| 414 default : ShouldNotReachHere(); | |
| 415 } | |
| 416 } | |
| 417 | |
| 418 | |
| 1506 | 419 // Helpers for swap and dup |
| 420 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
| 304 | 421 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
| 0 | 422 } |
| 423 | |
| 1506 | 424 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
| 425 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
| 0 | 426 } |
| 427 | |
| 428 | |
| 710 | 429 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
| 0 | 430 // set sender sp |
| 304 | 431 lea(r13, Address(rsp, wordSize)); |
| 0 | 432 // record last_sp |
| 304 | 433 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), r13); |
| 710 | 434 } |
| 435 | |
| 436 | |
| 437 // Jump to from_interpreted entry of a call unless single stepping is possible | |
| 438 // in this thread in which case we must call the i2i entry | |
| 439 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
| 440 prepare_to_jump_from_interpreted(); | |
| 0 | 441 |
| 442 if (JvmtiExport::can_post_interpreter_events()) { | |
| 443 Label run_compiled_code; | |
| 444 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 445 // compiled code in threads for which the event is enabled. Check here for | |
| 446 // interp_only_mode if these events CAN be enabled. | |
| 447 // interp_only is an int, on little endian it is sufficient to test the byte only | |
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448 // Is a cmpl faster? |
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449 cmpb(Address(r15_thread, JavaThread::interp_only_mode_offset()), 0); |
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450 jccb(Assembler::zero, run_compiled_code); |
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451 jmp(Address(method, Method::interpreter_entry_offset())); |
| 0 | 452 bind(run_compiled_code); |
| 453 } | |
| 454 | |
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455 jmp(Address(method, Method::from_interpreted_offset())); |
| 0 | 456 |
| 457 } | |
| 458 | |
| 459 | |
| 460 // The following two routines provide a hook so that an implementation | |
| 461 // can schedule the dispatch in two parts. amd64 does not do this. | |
| 462 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
| 463 // Nothing amd64 specific to be done here | |
| 464 } | |
| 465 | |
| 466 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
| 467 dispatch_next(state, step); | |
| 468 } | |
| 469 | |
| 470 void InterpreterMacroAssembler::dispatch_base(TosState state, | |
| 471 address* table, | |
| 472 bool verifyoop) { | |
| 473 verify_FPU(1, state); | |
| 474 if (VerifyActivationFrameSize) { | |
| 475 Label L; | |
| 304 | 476 mov(rcx, rbp); |
| 477 subptr(rcx, rsp); | |
| 478 int32_t min_frame_size = | |
| 0 | 479 (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * |
| 480 wordSize; | |
| 304 | 481 cmpptr(rcx, (int32_t)min_frame_size); |
| 0 | 482 jcc(Assembler::greaterEqual, L); |
| 483 stop("broken stack frame"); | |
| 484 bind(L); | |
| 485 } | |
| 486 if (verifyoop) { | |
| 487 verify_oop(rax, state); | |
| 488 } | |
| 489 lea(rscratch1, ExternalAddress((address)table)); | |
| 490 jmp(Address(rscratch1, rbx, Address::times_8)); | |
| 491 } | |
| 492 | |
| 493 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
| 494 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 495 } | |
| 496 | |
| 497 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
| 498 dispatch_base(state, Interpreter::normal_table(state)); | |
| 499 } | |
| 500 | |
| 501 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
| 502 dispatch_base(state, Interpreter::normal_table(state), false); | |
| 503 } | |
| 504 | |
| 505 | |
| 506 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
| 507 // load next bytecode (load before advancing r13 to prevent AGI) | |
| 508 load_unsigned_byte(rbx, Address(r13, step)); | |
| 509 // advance r13 | |
| 304 | 510 increment(r13, step); |
| 0 | 511 dispatch_base(state, Interpreter::dispatch_table(state)); |
| 512 } | |
| 513 | |
| 514 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 515 // load current bytecode | |
| 516 load_unsigned_byte(rbx, Address(r13, 0)); | |
| 517 dispatch_base(state, table); | |
| 518 } | |
| 519 | |
| 520 // remove activation | |
| 521 // | |
| 522 // Unlock the receiver if this is a synchronized method. | |
| 523 // Unlock any Java monitors from syncronized blocks. | |
| 524 // Remove the activation from the stack. | |
| 525 // | |
| 526 // If there are locked Java monitors | |
| 527 // If throw_monitor_exception | |
| 528 // throws IllegalMonitorStateException | |
| 529 // Else if install_monitor_exception | |
| 530 // installs IllegalMonitorStateException | |
| 531 // Else | |
| 532 // no error processing | |
| 533 void InterpreterMacroAssembler::remove_activation( | |
| 534 TosState state, | |
| 535 Register ret_addr, | |
| 536 bool throw_monitor_exception, | |
| 537 bool install_monitor_exception, | |
| 538 bool notify_jvmdi) { | |
| 539 // Note: Registers rdx xmm0 may be in use for the | |
| 540 // result check if synchronized method | |
| 541 Label unlocked, unlock, no_unlock; | |
| 542 | |
| 543 // get the value of _do_not_unlock_if_synchronized into rdx | |
| 544 const Address do_not_unlock_if_synchronized(r15_thread, | |
| 545 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 546 movbool(rdx, do_not_unlock_if_synchronized); | |
| 547 movbool(do_not_unlock_if_synchronized, false); // reset the flag | |
| 548 | |
| 549 // get method access flags | |
| 304 | 550 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); |
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551 movl(rcx, Address(rbx, Method::access_flags_offset())); |
| 0 | 552 testl(rcx, JVM_ACC_SYNCHRONIZED); |
| 553 jcc(Assembler::zero, unlocked); | |
| 554 | |
| 555 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
| 556 // is set. | |
| 557 testbool(rdx); | |
| 558 jcc(Assembler::notZero, no_unlock); | |
| 559 | |
| 560 // unlock monitor | |
| 561 push(state); // save result | |
| 562 | |
| 563 // BasicObjectLock will be first in list, since this is a | |
| 564 // synchronized method. However, need to check that the object has | |
| 565 // not been unlocked by an explicit monitorexit bytecode. | |
| 566 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * | |
| 567 wordSize - (int) sizeof(BasicObjectLock)); | |
| 568 // We use c_rarg1 so that if we go slow path it will be the correct | |
| 569 // register for unlock_object to pass to VM directly | |
| 304 | 570 lea(c_rarg1, monitor); // address of first monitor |
| 0 | 571 |
| 304 | 572 movptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
| 573 testptr(rax, rax); | |
| 0 | 574 jcc(Assembler::notZero, unlock); |
| 575 | |
| 576 pop(state); | |
| 577 if (throw_monitor_exception) { | |
| 578 // Entry already unlocked, need to throw exception | |
| 579 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 580 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 581 should_not_reach_here(); | |
| 582 } else { | |
| 583 // Monitor already unlocked during a stack unroll. If requested, | |
| 584 // install an illegal_monitor_state_exception. Continue with | |
| 585 // stack unrolling. | |
| 586 if (install_monitor_exception) { | |
| 587 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 588 InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 589 } | |
| 590 jmp(unlocked); | |
| 591 } | |
| 592 | |
| 593 bind(unlock); | |
| 594 unlock_object(c_rarg1); | |
| 595 pop(state); | |
| 596 | |
| 597 // Check that for block-structured locking (i.e., that all locked | |
| 598 // objects has been unlocked) | |
| 599 bind(unlocked); | |
| 600 | |
| 601 // rax: Might contain return value | |
| 602 | |
| 603 // Check that all monitors are unlocked | |
| 604 { | |
| 605 Label loop, exception, entry, restart; | |
| 606 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 607 const Address monitor_block_top( | |
| 608 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 609 const Address monitor_block_bot( | |
| 610 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 611 | |
| 612 bind(restart); | |
| 613 // We use c_rarg1 so that if we go slow path it will be the correct | |
| 614 // register for unlock_object to pass to VM directly | |
| 304 | 615 movptr(c_rarg1, monitor_block_top); // points to current entry, starting |
| 0 | 616 // with top-most entry |
| 304 | 617 lea(rbx, monitor_block_bot); // points to word before bottom of |
| 0 | 618 // monitor block |
| 619 jmp(entry); | |
| 620 | |
| 621 // Entry already locked, need to throw exception | |
| 622 bind(exception); | |
| 623 | |
| 624 if (throw_monitor_exception) { | |
| 625 // Throw exception | |
| 626 MacroAssembler::call_VM(noreg, | |
| 627 CAST_FROM_FN_PTR(address, InterpreterRuntime:: | |
| 628 throw_illegal_monitor_state_exception)); | |
| 629 should_not_reach_here(); | |
| 630 } else { | |
| 631 // Stack unrolling. Unlock object and install illegal_monitor_exception. | |
| 632 // Unlock does not block, so don't have to worry about the frame. | |
| 633 // We don't have to preserve c_rarg1 since we are going to throw an exception. | |
| 634 | |
| 635 push(state); | |
| 636 unlock_object(c_rarg1); | |
| 637 pop(state); | |
| 638 | |
| 639 if (install_monitor_exception) { | |
| 640 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 641 InterpreterRuntime:: | |
| 642 new_illegal_monitor_state_exception)); | |
| 643 } | |
| 644 | |
| 645 jmp(restart); | |
| 646 } | |
| 647 | |
| 648 bind(loop); | |
| 649 // check if current entry is used | |
| 304 | 650 cmpptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL); |
| 0 | 651 jcc(Assembler::notEqual, exception); |
| 652 | |
| 304 | 653 addptr(c_rarg1, entry_size); // otherwise advance to next entry |
| 0 | 654 bind(entry); |
| 304 | 655 cmpptr(c_rarg1, rbx); // check if bottom reached |
| 0 | 656 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 657 } | |
| 658 | |
| 659 bind(no_unlock); | |
| 660 | |
| 661 // jvmti support | |
| 662 if (notify_jvmdi) { | |
| 663 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
| 664 } else { | |
| 665 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
| 666 } | |
| 667 | |
| 668 // remove activation | |
| 669 // get sender sp | |
| 304 | 670 movptr(rbx, |
| 671 Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); | |
| 0 | 672 leave(); // remove frame anchor |
| 304 | 673 pop(ret_addr); // get return address |
| 674 mov(rsp, rbx); // set sp to sender sp | |
| 0 | 675 } |
| 676 | |
| 304 | 677 #endif // C_INTERP |
| 678 | |
| 0 | 679 // Lock object |
| 680 // | |
| 681 // Args: | |
| 682 // c_rarg1: BasicObjectLock to be used for locking | |
| 683 // | |
| 684 // Kills: | |
| 685 // rax | |
| 686 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, .. (param regs) | |
| 687 // rscratch1, rscratch2 (scratch regs) | |
| 688 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
| 689 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be c_rarg1"); | |
| 690 | |
| 691 if (UseHeavyMonitors) { | |
| 692 call_VM(noreg, | |
| 693 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), | |
| 694 lock_reg); | |
| 695 } else { | |
| 696 Label done; | |
| 697 | |
| 698 const Register swap_reg = rax; // Must use rax for cmpxchg instruction | |
| 699 const Register obj_reg = c_rarg3; // Will contain the oop | |
| 700 | |
| 701 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
| 702 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
| 703 const int mark_offset = lock_offset + | |
| 704 BasicLock::displaced_header_offset_in_bytes(); | |
| 705 | |
| 706 Label slow_case; | |
| 707 | |
| 708 // Load object pointer into obj_reg %c_rarg3 | |
| 304 | 709 movptr(obj_reg, Address(lock_reg, obj_offset)); |
| 0 | 710 |
| 711 if (UseBiasedLocking) { | |
| 712 biased_locking_enter(lock_reg, obj_reg, swap_reg, rscratch1, false, done, &slow_case); | |
| 713 } | |
| 714 | |
| 715 // Load immediate 1 into swap_reg %rax | |
| 716 movl(swap_reg, 1); | |
| 717 | |
| 718 // Load (object->mark() | 1) into swap_reg %rax | |
| 304 | 719 orptr(swap_reg, Address(obj_reg, 0)); |
| 0 | 720 |
| 721 // Save (object->mark() | 1) into BasicLock's displaced header | |
| 304 | 722 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 723 |
| 724 assert(lock_offset == 0, | |
| 725 "displached header must be first word in BasicObjectLock"); | |
| 726 | |
| 727 if (os::is_MP()) lock(); | |
| 304 | 728 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
| 0 | 729 if (PrintBiasedLockingStatistics) { |
| 730 cond_inc32(Assembler::zero, | |
| 731 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 732 } | |
| 733 jcc(Assembler::zero, done); | |
| 734 | |
| 735 // Test if the oopMark is an obvious stack pointer, i.e., | |
| 736 // 1) (mark & 7) == 0, and | |
| 737 // 2) rsp <= mark < mark + os::pagesize() | |
| 738 // | |
| 739 // These 3 tests can be done by evaluating the following | |
| 740 // expression: ((mark - rsp) & (7 - os::vm_page_size())), | |
| 741 // assuming both stack pointer and pagesize have their | |
| 742 // least significant 3 bits clear. | |
| 743 // NOTE: the oopMark is in swap_reg %rax as the result of cmpxchg | |
| 304 | 744 subptr(swap_reg, rsp); |
| 745 andptr(swap_reg, 7 - os::vm_page_size()); | |
| 0 | 746 |
| 747 // Save the test result, for recursive case, the result is zero | |
| 304 | 748 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 749 |
| 750 if (PrintBiasedLockingStatistics) { | |
| 751 cond_inc32(Assembler::zero, | |
| 752 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 753 } | |
| 754 jcc(Assembler::zero, done); | |
| 755 | |
| 756 bind(slow_case); | |
| 757 | |
| 758 // Call the runtime routine for slow case | |
| 759 call_VM(noreg, | |
| 760 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), | |
| 761 lock_reg); | |
| 762 | |
| 763 bind(done); | |
| 764 } | |
| 765 } | |
| 766 | |
| 767 | |
| 768 // Unlocks an object. Used in monitorexit bytecode and | |
| 769 // remove_activation. Throws an IllegalMonitorException if object is | |
| 770 // not locked by current thread. | |
| 771 // | |
| 772 // Args: | |
| 773 // c_rarg1: BasicObjectLock for lock | |
| 774 // | |
| 775 // Kills: | |
| 776 // rax | |
| 777 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ... (param regs) | |
| 778 // rscratch1, rscratch2 (scratch regs) | |
| 779 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
| 780 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be rarg1"); | |
| 781 | |
| 782 if (UseHeavyMonitors) { | |
| 783 call_VM(noreg, | |
| 784 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), | |
| 785 lock_reg); | |
| 786 } else { | |
| 787 Label done; | |
| 788 | |
| 789 const Register swap_reg = rax; // Must use rax for cmpxchg instruction | |
| 790 const Register header_reg = c_rarg2; // Will contain the old oopMark | |
| 791 const Register obj_reg = c_rarg3; // Will contain the oop | |
| 792 | |
| 793 save_bcp(); // Save in case of exception | |
| 794 | |
| 795 // Convert from BasicObjectLock structure to object and BasicLock | |
| 796 // structure Store the BasicLock address into %rax | |
| 304 | 797 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes())); |
| 0 | 798 |
| 799 // Load oop into obj_reg(%c_rarg3) | |
| 304 | 800 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes())); |
| 0 | 801 |
| 802 // Free entry | |
| 304 | 803 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); |
| 0 | 804 |
| 805 if (UseBiasedLocking) { | |
| 806 biased_locking_exit(obj_reg, header_reg, done); | |
| 807 } | |
| 808 | |
| 809 // Load the old header from BasicLock structure | |
| 304 | 810 movptr(header_reg, Address(swap_reg, |
| 811 BasicLock::displaced_header_offset_in_bytes())); | |
| 0 | 812 |
| 813 // Test for recursion | |
| 304 | 814 testptr(header_reg, header_reg); |
| 0 | 815 |
| 816 // zero for recursive case | |
| 817 jcc(Assembler::zero, done); | |
| 818 | |
| 819 // Atomic swap back the old header | |
| 820 if (os::is_MP()) lock(); | |
| 304 | 821 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
| 0 | 822 |
| 823 // zero for recursive case | |
| 824 jcc(Assembler::zero, done); | |
| 825 | |
| 826 // Call the runtime routine for slow case. | |
| 304 | 827 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), |
| 0 | 828 obj_reg); // restore obj |
| 829 call_VM(noreg, | |
| 830 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), | |
| 831 lock_reg); | |
| 832 | |
| 833 bind(done); | |
| 834 | |
| 835 restore_bcp(); | |
| 836 } | |
| 837 } | |
| 838 | |
| 304 | 839 #ifndef CC_INTERP |
| 0 | 840 |
| 841 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, | |
| 842 Label& zero_continue) { | |
| 843 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 844 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
| 845 testptr(mdp, mdp); | |
| 0 | 846 jcc(Assembler::zero, zero_continue); |
| 847 } | |
| 848 | |
| 849 | |
| 850 // Set the method data pointer for the current bcp. | |
| 851 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 852 assert(ProfileInterpreter, "must be profiling interpreter"); | |
|
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853 Label set_mdp; |
| 304 | 854 push(rax); |
| 855 push(rbx); | |
| 0 | 856 |
| 857 get_method(rbx); | |
| 858 // Test MDO to avoid the call if it is NULL. | |
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859 movptr(rax, Address(rbx, in_bytes(Method::method_data_offset()))); |
| 304 | 860 testptr(rax, rax); |
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861 jcc(Assembler::zero, set_mdp); |
| 0 | 862 // rbx: method |
| 863 // r13: bcp | |
| 864 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, r13); | |
| 865 // rax: mdi | |
|
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866 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
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867 movptr(rbx, Address(rbx, in_bytes(Method::method_data_offset()))); |
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868 addptr(rbx, in_bytes(MethodData::data_offset())); |
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869 addptr(rax, rbx); |
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870 bind(set_mdp); |
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871 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
| 304 | 872 pop(rbx); |
| 873 pop(rax); | |
| 0 | 874 } |
| 875 | |
| 876 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 877 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 878 #ifdef ASSERT | |
| 879 Label verify_continue; | |
| 304 | 880 push(rax); |
| 881 push(rbx); | |
| 882 push(c_rarg3); | |
| 883 push(c_rarg2); | |
| 0 | 884 test_method_data_pointer(c_rarg3, verify_continue); // If mdp is zero, continue |
| 885 get_method(rbx); | |
| 886 | |
| 887 // If the mdp is valid, it will point to a DataLayout header which is | |
| 888 // consistent with the bcp. The converse is highly probable also. | |
|
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889 load_unsigned_short(c_rarg2, |
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890 Address(c_rarg3, in_bytes(DataLayout::bci_offset()))); |
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891 addptr(c_rarg2, Address(rbx, Method::const_offset())); |
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892 lea(c_rarg2, Address(c_rarg2, ConstMethod::codes_offset())); |
| 304 | 893 cmpptr(c_rarg2, r13); |
| 0 | 894 jcc(Assembler::equal, verify_continue); |
| 895 // rbx: method | |
| 896 // r13: bcp | |
| 897 // c_rarg3: mdp | |
| 898 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), | |
| 899 rbx, r13, c_rarg3); | |
| 900 bind(verify_continue); | |
| 304 | 901 pop(c_rarg2); |
| 902 pop(c_rarg3); | |
| 903 pop(rbx); | |
| 904 pop(rax); | |
| 0 | 905 #endif // ASSERT |
| 906 } | |
| 907 | |
| 908 | |
| 909 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, | |
| 910 int constant, | |
| 911 Register value) { | |
| 912 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 913 Address data(mdp_in, constant); | |
| 304 | 914 movptr(data, value); |
| 0 | 915 } |
| 916 | |
| 917 | |
| 918 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 919 int constant, | |
| 920 bool decrement) { | |
| 921 // Counter address | |
| 922 Address data(mdp_in, constant); | |
| 923 | |
| 924 increment_mdp_data_at(data, decrement); | |
| 925 } | |
| 926 | |
| 927 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
| 928 bool decrement) { | |
| 929 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 930 // %%% this does 64bit counters at best it is wasting space |
| 931 // at worst it is a rare bug when counters overflow | |
| 0 | 932 |
| 933 if (decrement) { | |
| 934 // Decrement the register. Set condition codes. | |
| 304 | 935 addptr(data, (int32_t) -DataLayout::counter_increment); |
| 0 | 936 // If the decrement causes the counter to overflow, stay negative |
| 937 Label L; | |
| 938 jcc(Assembler::negative, L); | |
| 304 | 939 addptr(data, (int32_t) DataLayout::counter_increment); |
| 0 | 940 bind(L); |
| 941 } else { | |
| 942 assert(DataLayout::counter_increment == 1, | |
| 943 "flow-free idiom only works with 1"); | |
| 944 // Increment the register. Set carry flag. | |
| 304 | 945 addptr(data, DataLayout::counter_increment); |
| 0 | 946 // If the increment causes the counter to overflow, pull back by 1. |
| 304 | 947 sbbptr(data, (int32_t)0); |
| 0 | 948 } |
| 949 } | |
| 950 | |
| 951 | |
| 952 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 953 Register reg, | |
| 954 int constant, | |
| 955 bool decrement) { | |
| 956 Address data(mdp_in, reg, Address::times_1, constant); | |
| 957 | |
| 958 increment_mdp_data_at(data, decrement); | |
| 959 } | |
| 960 | |
| 961 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, | |
| 962 int flag_byte_constant) { | |
| 963 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 964 int header_offset = in_bytes(DataLayout::header_offset()); | |
| 965 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
| 966 // Set the flag | |
| 967 orl(Address(mdp_in, header_offset), header_bits); | |
| 968 } | |
| 969 | |
| 970 | |
| 971 | |
| 972 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
| 973 int offset, | |
| 974 Register value, | |
| 975 Register test_value_out, | |
| 976 Label& not_equal_continue) { | |
| 977 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 978 if (test_value_out == noreg) { | |
| 304 | 979 cmpptr(value, Address(mdp_in, offset)); |
| 0 | 980 } else { |
| 981 // Put the test value into a register, so caller can use it: | |
| 304 | 982 movptr(test_value_out, Address(mdp_in, offset)); |
| 983 cmpptr(test_value_out, value); | |
| 0 | 984 } |
| 985 jcc(Assembler::notEqual, not_equal_continue); | |
| 986 } | |
| 987 | |
| 988 | |
| 989 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, | |
| 990 int offset_of_disp) { | |
| 991 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 992 Address disp_address(mdp_in, offset_of_disp); | |
| 304 | 993 addptr(mdp_in, disp_address); |
| 994 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 995 } |
| 996 | |
| 997 | |
| 998 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, | |
| 999 Register reg, | |
| 1000 int offset_of_disp) { | |
| 1001 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 1002 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
| 304 | 1003 addptr(mdp_in, disp_address); |
| 1004 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1005 } |
| 1006 | |
| 1007 | |
| 1008 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, | |
| 1009 int constant) { | |
| 1010 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1011 addptr(mdp_in, constant); |
| 1012 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 1013 } |
| 1014 | |
| 1015 | |
| 1016 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
| 1017 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1018 push(return_bci); // save/restore across call_VM |
| 0 | 1019 call_VM(noreg, |
| 1020 CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), | |
| 1021 return_bci); | |
| 304 | 1022 pop(return_bci); |
| 0 | 1023 } |
| 1024 | |
| 1025 | |
| 1026 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, | |
| 1027 Register bumped_count) { | |
| 1028 if (ProfileInterpreter) { | |
| 1029 Label profile_continue; | |
| 1030 | |
| 1031 // If no method data exists, go to profile_continue. | |
| 1032 // Otherwise, assign to mdp | |
| 1033 test_method_data_pointer(mdp, profile_continue); | |
| 1034 | |
| 1035 // We are taking a branch. Increment the taken count. | |
| 1036 // We inline increment_mdp_data_at to return bumped_count in a register | |
| 1037 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
| 1038 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
| 304 | 1039 movptr(bumped_count, data); |
| 0 | 1040 assert(DataLayout::counter_increment == 1, |
| 1041 "flow-free idiom only works with 1"); | |
| 304 | 1042 addptr(bumped_count, DataLayout::counter_increment); |
| 1043 sbbptr(bumped_count, 0); | |
| 1044 movptr(data, bumped_count); // Store back out | |
| 0 | 1045 |
| 1046 // The method data pointer needs to be updated to reflect the new target. | |
| 1047 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
| 1048 bind(profile_continue); | |
| 1049 } | |
| 1050 } | |
| 1051 | |
| 1052 | |
| 1053 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
| 1054 if (ProfileInterpreter) { | |
| 1055 Label profile_continue; | |
| 1056 | |
| 1057 // If no method data exists, go to profile_continue. | |
| 1058 test_method_data_pointer(mdp, profile_continue); | |
| 1059 | |
| 1060 // We are taking a branch. Increment the not taken count. | |
| 1061 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
| 1062 | |
| 1063 // The method data pointer needs to be updated to correspond to | |
| 1064 // the next bytecode | |
| 1065 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
| 1066 bind(profile_continue); | |
| 1067 } | |
| 1068 } | |
| 1069 | |
| 1070 | |
| 1071 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
| 1072 if (ProfileInterpreter) { | |
| 1073 Label profile_continue; | |
| 1074 | |
| 1075 // If no method data exists, go to profile_continue. | |
| 1076 test_method_data_pointer(mdp, profile_continue); | |
| 1077 | |
| 1078 // We are making a call. Increment the count. | |
| 1079 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1080 | |
| 1081 // The method data pointer needs to be updated to reflect the new target. | |
| 1082 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
| 1083 bind(profile_continue); | |
| 1084 } | |
| 1085 } | |
| 1086 | |
| 1087 | |
| 1088 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
| 1089 if (ProfileInterpreter) { | |
| 1090 Label profile_continue; | |
| 1091 | |
| 1092 // If no method data exists, go to profile_continue. | |
| 1093 test_method_data_pointer(mdp, profile_continue); | |
| 1094 | |
| 1095 // We are making a call. Increment the count. | |
| 1096 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1097 | |
| 1098 // The method data pointer needs to be updated to reflect the new target. | |
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1099 update_mdp_by_constant(mdp, |
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1100 in_bytes(VirtualCallData:: |
| 0 | 1101 virtual_call_data_size())); |
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1102 |
| 0 | 1103 bind(profile_continue); |
| 1104 } | |
| 1105 } | |
| 1106 | |
| 1107 | |
| 1108 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, | |
| 1109 Register mdp, | |
| 1108 | 1110 Register reg2, |
| 1111 bool receiver_can_be_null) { | |
| 0 | 1112 if (ProfileInterpreter) { |
| 1113 Label profile_continue; | |
| 1114 | |
| 1115 // If no method data exists, go to profile_continue. | |
| 1116 test_method_data_pointer(mdp, profile_continue); | |
| 1117 | |
| 1108 | 1118 Label skip_receiver_profile; |
| 1119 if (receiver_can_be_null) { | |
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1120 Label not_null; |
| 1108 | 1121 testptr(receiver, receiver); |
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1122 jccb(Assembler::notZero, not_null); |
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1123 // We are making a call. Increment the count for null receiver. |
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1124 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1125 jmp(skip_receiver_profile); |
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1126 bind(not_null); |
| 1108 | 1127 } |
| 1128 | |
| 0 | 1129 // Record the receiver type. |
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1130 record_klass_in_profile(receiver, mdp, reg2, true); |
| 1108 | 1131 bind(skip_receiver_profile); |
| 0 | 1132 |
| 1133 // The method data pointer needs to be updated to reflect the new target. | |
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1134 #ifdef GRAAL |
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1135 if (MethodProfileWidth == 0) { |
|
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1136 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); |
|
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|
1137 } |
|
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|
1138 #else |
|
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|
1139 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); |
|
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|
1140 #endif |
| 0 | 1141 bind(profile_continue); |
| 1142 } | |
| 1143 } | |
| 1144 | |
|
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|
1145 #ifdef GRAAL |
|
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|
1146 void InterpreterMacroAssembler::profile_called_method(Register method, Register mdp, Register reg2) { |
|
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|
1147 assert_different_registers(method, mdp, reg2); |
|
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|
1148 if (ProfileInterpreter && MethodProfileWidth > 0) { |
|
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|
1149 Label profile_continue; |
|
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|
1150 |
|
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|
1151 // If no method data exists, go to profile_continue. |
|
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|
1152 test_method_data_pointer(mdp, profile_continue); |
|
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|
1153 |
|
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|
1154 Label done; |
|
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|
1155 record_item_in_profile_helper(method, mdp, reg2, 0, done, MethodProfileWidth, |
|
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|
1156 &VirtualCallData::method_offset, &VirtualCallData::method_count_offset, in_bytes(VirtualCallData::nonprofiled_receiver_count_offset())); |
|
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|
1157 bind (done); |
|
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|
1158 |
|
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|
1159 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size())); |
|
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|
1160 bind(profile_continue); |
|
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|
1161 } |
|
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|
1162 } |
|
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|
1163 |
|
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1164 #endif |
|
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1165 |
| 0 | 1166 // This routine creates a state machine for updating the multi-row |
| 1167 // type profile at a virtual call site (or other type-sensitive bytecode). | |
| 1168 // The machine visits each row (of receiver/count) until the receiver type | |
| 1169 // is found, or until it runs out of rows. At the same time, it remembers | |
| 1170 // the location of the first empty row. (An empty row records null for its | |
| 1171 // receiver, and can be allocated for a newly-observed receiver type.) | |
| 1172 // Because there are two degrees of freedom in the state, a simple linear | |
| 1173 // search will not work; it must be a decision tree. Hence this helper | |
| 1174 // function is recursive, to generate the required tree structured code. | |
| 1175 // It's the interpreter, so we are trading off code space for speed. | |
| 1176 // See below for example code. | |
| 1177 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1178 Register receiver, Register mdp, | |
|
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|
1179 Register reg2, Label& done, bool is_virtual_call) { |
|
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1180 if (TypeProfileWidth == 0) { |
|
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1181 if (is_virtual_call) { |
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1182 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
|
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1183 } |
|
7154
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|
1184 #ifdef GRAAL |
|
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|
1185 else { |
|
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|
1186 increment_mdp_data_at(mdp, in_bytes(ReceiverTypeData::nonprofiled_receiver_count_offset())); |
|
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|
1187 } |
|
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|
1188 #endif |
|
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|
1189 } else { |
|
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|
1190 bool use_non_profiled_counter = !is_virtual_call || IS_GRAAL_DEFINED; |
|
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|
1191 int non_profiled_offset = -1; |
|
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|
1192 if (use_non_profiled_counter) { |
|
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|
1193 non_profiled_offset = in_bytes(CounterData::count_offset()); |
|
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|
1194 #ifdef GRAAL |
|
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|
1195 if (!is_virtual_call) { |
|
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1196 non_profiled_offset = in_bytes(ReceiverTypeData::nonprofiled_receiver_count_offset()); |
|
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|
1197 } |
|
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|
1198 #endif |
|
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|
1199 assert(non_profiled_offset >= 0, "must be"); |
|
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|
1200 } |
|
967
6918603297f7
6858208: jvm crash when specifying TypeProfileWidth=0 on jdk 6.0
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|
1201 |
|
9760
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|
1202 record_item_in_profile_helper(receiver, mdp, reg2, 0, done, TypeProfileWidth, |
|
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|
1203 &VirtualCallData::receiver_offset, &VirtualCallData::receiver_count_offset, non_profiled_offset); |
|
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|
1204 } |
|
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|
1205 } |
|
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|
1206 |
|
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|
1207 void InterpreterMacroAssembler::record_item_in_profile_helper(Register item, Register mdp, |
|
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|
1208 Register reg2, int start_row, Label& done, int total_rows, |
|
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|
1209 OffsetFunction item_offset_fn, OffsetFunction item_count_offset_fn, |
|
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|
1210 int non_profiled_offset) { |
|
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Added infrastructure for recording invoked methods in the profiling information.
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|
1211 int last_row = total_rows - 1; |
| 0 | 1212 assert(start_row <= last_row, "must be work left to do"); |
|
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|
1213 // Test this row for both the item and for null. |
| 0 | 1214 // Take any of three different outcomes: |
|
9760
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|
1215 // 1. found item => increment count and goto done |
| 0 | 1216 // 2. found null => keep looking for case 1, maybe allocate this cell |
| 1217 // 3. found something else => keep looking for cases 1 and 2 | |
| 1218 // Case 3 is handled by a recursive call. | |
| 1219 for (int row = start_row; row <= last_row; row++) { | |
| 1220 Label next_test; | |
| 1221 bool test_for_null_also = (row == start_row); | |
| 1222 | |
|
9760
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|
1223 // See if the item is item[n]. |
|
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|
1224 int item_offset = in_bytes(item_offset_fn(row)); |
|
c76b43ed5089
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|
1225 test_mdp_data_at(mdp, item_offset, item, |
| 0 | 1226 (test_for_null_also ? reg2 : noreg), |
| 1227 next_test); | |
|
9760
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|
1228 // (Reg2 now contains the item from the CallData.) |
| 0 | 1229 |
|
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|
1230 // The item is item[n]. Increment count[n]. |
|
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|
1231 int count_offset = in_bytes(item_count_offset_fn(row)); |
| 0 | 1232 increment_mdp_data_at(mdp, count_offset); |
| 1233 jmp(done); | |
| 1234 bind(next_test); | |
| 1235 | |
| 1236 if (test_for_null_also) { | |
|
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|
1237 Label found_null; |
|
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|
1238 // Failed the equality check on item[n]... Test for null. |
| 304 | 1239 testptr(reg2, reg2); |
| 0 | 1240 if (start_row == last_row) { |
| 1241 // The only thing left to do is handle the null case. | |
|
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|
1242 if (non_profiled_offset >= 0) { |
|
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|
1243 jccb(Assembler::zero, found_null); |
|
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|
1244 // Item did not match any saved item and there is no empty row for it. |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
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diff
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|
1245 // Increment total counter to indicate polymorphic case. |
|
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|
1246 increment_mdp_data_at(mdp, non_profiled_offset); |
|
1206
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|
1247 jmp(done); |
|
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|
1248 bind(found_null); |
|
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|
1249 } else { |
|
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|
1250 jcc(Assembler::notZero, done); |
|
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|
1251 } |
| 0 | 1252 break; |
| 1253 } | |
| 1254 // Since null is rare, make it be the branch-taken case. | |
| 1255 jcc(Assembler::zero, found_null); | |
| 1256 | |
| 1257 // Put all the "Case 3" tests here. | |
|
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|
1258 record_item_in_profile_helper(item, mdp, reg2, start_row + 1, done, total_rows, |
|
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|
1259 item_offset_fn, item_count_offset_fn, non_profiled_offset); |
| 0 | 1260 |
|
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|
1261 // Found a null. Keep searching for a matching item, |
| 0 | 1262 // but remember that this is an empty (unused) slot. |
| 1263 bind(found_null); | |
| 1264 } | |
| 1265 } | |
| 1266 | |
|
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|
1267 // In the fall-through case, we found no matching item, but we |
|
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|
1268 // observed the item[start_row] is NULL. |
| 0 | 1269 |
|
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|
1270 // Fill in the item field and increment the count. |
|
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|
1271 int item_offset = in_bytes(item_offset_fn(start_row)); |
|
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|
1272 set_mdp_data_at(mdp, item_offset, item); |
|
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|
1273 int count_offset = in_bytes(item_count_offset_fn(start_row)); |
| 0 | 1274 movl(reg2, DataLayout::counter_increment); |
| 1275 set_mdp_data_at(mdp, count_offset, reg2); | |
|
1206
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|
1276 if (start_row > 0) { |
|
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|
1277 jmp(done); |
|
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|
1278 } |
| 0 | 1279 } |
| 1280 | |
| 1281 // Example state machine code for three profile rows: | |
| 1282 // // main copy of decision tree, rooted at row[1] | |
| 1283 // if (row[0].rec == rec) { row[0].incr(); goto done; } | |
| 1284 // if (row[0].rec != NULL) { | |
| 1285 // // inner copy of decision tree, rooted at row[1] | |
| 1286 // if (row[1].rec == rec) { row[1].incr(); goto done; } | |
| 1287 // if (row[1].rec != NULL) { | |
| 1288 // // degenerate decision tree, rooted at row[2] | |
| 1289 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
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1290 // if (row[2].rec != NULL) { count.incr(); goto done; } // overflow |
| 0 | 1291 // row[2].init(rec); goto done; |
| 1292 // } else { | |
| 1293 // // remember row[1] is empty | |
| 1294 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
| 1295 // row[1].init(rec); goto done; | |
| 1296 // } | |
| 1297 // } else { | |
| 1298 // // remember row[0] is empty | |
| 1299 // if (row[1].rec == rec) { row[1].incr(); goto done; } | |
| 1300 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
| 1301 // row[0].init(rec); goto done; | |
| 1302 // } | |
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1303 // done: |
| 0 | 1304 |
| 1305 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
|
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1306 Register mdp, Register reg2, |
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1307 bool is_virtual_call) { |
| 0 | 1308 assert(ProfileInterpreter, "must be profiling"); |
| 1309 Label done; | |
| 1310 | |
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1311 record_klass_in_profile_helper(receiver, mdp, reg2, done, is_virtual_call); |
| 0 | 1312 |
| 1313 bind (done); | |
| 1314 } | |
| 1315 | |
| 1316 void InterpreterMacroAssembler::profile_ret(Register return_bci, | |
| 1317 Register mdp) { | |
| 1318 if (ProfileInterpreter) { | |
| 1319 Label profile_continue; | |
| 1320 uint row; | |
| 1321 | |
| 1322 // If no method data exists, go to profile_continue. | |
| 1323 test_method_data_pointer(mdp, profile_continue); | |
| 1324 | |
| 1325 // Update the total ret count. | |
| 1326 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1327 | |
| 1328 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1329 Label next_test; | |
| 1330 | |
| 1331 // See if return_bci is equal to bci[n]: | |
| 1332 test_mdp_data_at(mdp, | |
| 1333 in_bytes(RetData::bci_offset(row)), | |
| 1334 return_bci, noreg, | |
| 1335 next_test); | |
| 1336 | |
| 1337 // return_bci is equal to bci[n]. Increment the count. | |
| 1338 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
| 1339 | |
| 1340 // The method data pointer needs to be updated to reflect the new target. | |
| 1341 update_mdp_by_offset(mdp, | |
| 1342 in_bytes(RetData::bci_displacement_offset(row))); | |
| 1343 jmp(profile_continue); | |
| 1344 bind(next_test); | |
| 1345 } | |
| 1346 | |
| 1347 update_mdp_for_ret(return_bci); | |
| 1348 | |
| 1349 bind(profile_continue); | |
| 1350 } | |
| 1351 } | |
| 1352 | |
| 1353 | |
| 1354 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
| 1355 if (ProfileInterpreter) { | |
| 1356 Label profile_continue; | |
| 1357 | |
| 1358 // If no method data exists, go to profile_continue. | |
| 1359 test_method_data_pointer(mdp, profile_continue); | |
| 1360 | |
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1361 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1362 |
| 0 | 1363 // The method data pointer needs to be updated. |
| 1364 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1365 if (TypeProfileCasts) { | |
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1366 mdp_delta = in_bytes(ReceiverTypeData::receiver_type_data_size()); |
| 0 | 1367 } |
| 1368 update_mdp_by_constant(mdp, mdp_delta); | |
| 1369 | |
| 1370 bind(profile_continue); | |
| 1371 } | |
| 1372 } | |
| 1373 | |
| 1374 | |
| 1375 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
| 1376 if (ProfileInterpreter && TypeProfileCasts) { | |
| 1377 Label profile_continue; | |
| 1378 | |
| 1379 // If no method data exists, go to profile_continue. | |
| 1380 test_method_data_pointer(mdp, profile_continue); | |
| 1381 | |
| 1382 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1383 // Back up the address, since we have already bumped the mdp. | |
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1384 count_offset -= in_bytes(ReceiverTypeData::receiver_type_data_size()); |
| 0 | 1385 |
| 1386 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1387 increment_mdp_data_at(mdp, count_offset, true); | |
| 1388 | |
| 1389 bind (profile_continue); | |
| 1390 } | |
| 1391 } | |
| 1392 | |
| 1393 | |
| 1394 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) { | |
| 1395 if (ProfileInterpreter) { | |
| 1396 Label profile_continue; | |
| 1397 | |
| 1398 // If no method data exists, go to profile_continue. | |
| 1399 test_method_data_pointer(mdp, profile_continue); | |
| 1400 | |
| 1401 // The method data pointer needs to be updated. | |
| 1402 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1403 if (TypeProfileCasts) { | |
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1404 mdp_delta = in_bytes(ReceiverTypeData::receiver_type_data_size()); |
| 0 | 1405 |
| 1406 // Record the object type. | |
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1407 record_klass_in_profile(klass, mdp, reg2, false); |
| 0 | 1408 } |
| 1409 update_mdp_by_constant(mdp, mdp_delta); | |
| 1410 | |
| 1411 bind(profile_continue); | |
| 1412 } | |
| 1413 } | |
| 1414 | |
| 1415 | |
| 1416 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
| 1417 if (ProfileInterpreter) { | |
| 1418 Label profile_continue; | |
| 1419 | |
| 1420 // If no method data exists, go to profile_continue. | |
| 1421 test_method_data_pointer(mdp, profile_continue); | |
| 1422 | |
| 1423 // Update the default case count | |
| 1424 increment_mdp_data_at(mdp, | |
| 1425 in_bytes(MultiBranchData::default_count_offset())); | |
| 1426 | |
| 1427 // The method data pointer needs to be updated. | |
| 1428 update_mdp_by_offset(mdp, | |
| 1429 in_bytes(MultiBranchData:: | |
| 1430 default_displacement_offset())); | |
| 1431 | |
| 1432 bind(profile_continue); | |
| 1433 } | |
| 1434 } | |
| 1435 | |
| 1436 | |
| 1437 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
| 1438 Register mdp, | |
| 1439 Register reg2) { | |
| 1440 if (ProfileInterpreter) { | |
| 1441 Label profile_continue; | |
| 1442 | |
| 1443 // If no method data exists, go to profile_continue. | |
| 1444 test_method_data_pointer(mdp, profile_continue); | |
| 1445 | |
| 1446 // Build the base (index * per_case_size_in_bytes()) + | |
| 1447 // case_array_offset_in_bytes() | |
| 1448 movl(reg2, in_bytes(MultiBranchData::per_case_size())); | |
| 304 | 1449 imulptr(index, reg2); // XXX l ? |
| 1450 addptr(index, in_bytes(MultiBranchData::case_array_offset())); // XXX l ? | |
| 0 | 1451 |
| 1452 // Update the case count | |
| 1453 increment_mdp_data_at(mdp, | |
| 1454 index, | |
| 1455 in_bytes(MultiBranchData::relative_count_offset())); | |
| 1456 | |
| 1457 // The method data pointer needs to be updated. | |
| 1458 update_mdp_by_offset(mdp, | |
| 1459 index, | |
| 1460 in_bytes(MultiBranchData:: | |
| 1461 relative_displacement_offset())); | |
| 1462 | |
| 1463 bind(profile_continue); | |
| 1464 } | |
| 1465 } | |
| 1466 | |
| 1467 | |
| 304 | 1468 |
| 0 | 1469 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
| 1470 if (state == atos) { | |
| 1471 MacroAssembler::verify_oop(reg); | |
| 1472 } | |
| 1473 } | |
| 1474 | |
| 1475 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 1476 } | |
| 304 | 1477 #endif // !CC_INTERP |
| 0 | 1478 |
| 1479 | |
| 1480 void InterpreterMacroAssembler::notify_method_entry() { | |
| 1481 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1482 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1483 // the code to check if the event should be sent. | |
| 1484 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1485 Label L; | |
| 1486 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset())); | |
| 1487 testl(rdx, rdx); | |
| 1488 jcc(Assembler::zero, L); | |
| 1489 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 1490 InterpreterRuntime::post_method_entry)); | |
| 1491 bind(L); | |
| 1492 } | |
| 1493 | |
| 1494 { | |
| 1495 SkipIfEqual skip(this, &DTraceMethodProbes, false); | |
| 1496 get_method(c_rarg1); | |
| 1497 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), | |
| 1498 r15_thread, c_rarg1); | |
| 1499 } | |
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1500 |
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1501 // RedefineClasses() tracing support for obsolete method entry |
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1502 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1503 get_method(c_rarg1); |
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1504 call_VM_leaf( |
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1505 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1506 r15_thread, c_rarg1); |
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1507 } |
| 0 | 1508 } |
| 1509 | |
| 1510 | |
| 1511 void InterpreterMacroAssembler::notify_method_exit( | |
| 1512 TosState state, NotifyMethodExitMode mode) { | |
| 1513 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1514 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1515 // the code to check if the event should be sent. | |
| 1516 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
| 1517 Label L; | |
| 1518 // Note: frame::interpreter_frame_result has a dependency on how the | |
| 1519 // method result is saved across the call to post_method_exit. If this | |
| 1520 // is changed then the interpreter_frame_result implementation will | |
| 1521 // need to be updated too. | |
| 304 | 1522 |
| 1523 // For c++ interpreter the result is always stored at a known location in the frame | |
| 1524 // template interpreter will leave it on the top of the stack. | |
| 1525 NOT_CC_INTERP(push(state);) | |
| 0 | 1526 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset())); |
| 1527 testl(rdx, rdx); | |
| 1528 jcc(Assembler::zero, L); | |
| 1529 call_VM(noreg, | |
| 1530 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
| 1531 bind(L); | |
| 304 | 1532 NOT_CC_INTERP(pop(state)); |
| 0 | 1533 } |
| 1534 | |
| 1535 { | |
| 1536 SkipIfEqual skip(this, &DTraceMethodProbes, false); | |
| 304 | 1537 NOT_CC_INTERP(push(state)); |
| 0 | 1538 get_method(c_rarg1); |
| 1539 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
| 1540 r15_thread, c_rarg1); | |
| 304 | 1541 NOT_CC_INTERP(pop(state)); |
| 0 | 1542 } |
| 1543 } | |
| 1783 | 1544 |
| 1545 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
| 1546 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
| 1547 int increment, int mask, | |
| 1548 Register scratch, bool preloaded, | |
| 1549 Condition cond, Label* where) { | |
| 1550 if (!preloaded) { | |
| 1551 movl(scratch, counter_addr); | |
| 1552 } | |
| 1553 incrementl(scratch, increment); | |
| 1554 movl(counter_addr, scratch); | |
| 1555 andl(scratch, mask); | |
| 1556 jcc(cond, *where); | |
| 1557 } |