Mercurial > hg > truffle
annotate src/cpu/x86/vm/interp_masm_x86_64.cpp @ 7212:291ffc492eb6
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Fri, 14 Dec 2012 14:35:13 +0100 |
| parents | 5d0bb7d52783 f34d701e952e |
| children | c76b43ed5089 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 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_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 // Load object from cpool->resolved_references(index) |
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275 void InterpreterMacroAssembler::load_resolved_reference_at_index( |
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276 Register result, Register index) { |
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277 assert_different_registers(result, index); |
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278 // convert from field index to resolved_references() index and from |
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279 // word index to byte offset. Since this is a java object, it can be compressed |
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280 Register tmp = index; // reuse |
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281 shll(tmp, LogBytesPerHeapOop); |
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282 |
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283 get_constant_pool(result); |
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284 // load pointer for resolved_references[] objArray |
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285 movptr(result, Address(result, ConstantPool::resolved_references_offset_in_bytes())); |
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286 // JNIHandles::resolve(obj); |
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287 movptr(result, Address(result, 0)); |
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288 // Add in the index |
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289 addptr(result, tmp); |
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290 load_heap_oop(result, Address(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
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291 } |
| 0 | 292 |
| 293 // Generate a subtype check: branch to ok_is_subtype if sub_klass is a | |
| 294 // subtype of super_klass. | |
| 295 // | |
| 296 // Args: | |
| 297 // rax: superklass | |
| 298 // Rsub_klass: subklass | |
| 299 // | |
| 300 // Kills: | |
| 301 // rcx, rdi | |
| 302 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass, | |
| 303 Label& ok_is_subtype) { | |
| 304 assert(Rsub_klass != rax, "rax holds superklass"); | |
| 305 assert(Rsub_klass != r14, "r14 holds locals"); | |
| 306 assert(Rsub_klass != r13, "r13 holds bcp"); | |
| 307 assert(Rsub_klass != rcx, "rcx holds 2ndary super array length"); | |
| 308 assert(Rsub_klass != rdi, "rdi holds 2ndary super array scan ptr"); | |
| 309 | |
| 310 // Profile the not-null value's klass. | |
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311 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi |
| 0 | 312 |
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313 // Do the check. |
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314 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx |
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315 |
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316 // Profile the failure of the check. |
| 0 | 317 profile_typecheck_failed(rcx); // blows rcx |
| 318 } | |
| 319 | |
| 320 | |
| 304 | 321 |
| 0 | 322 // Java Expression Stack |
| 323 | |
| 324 void InterpreterMacroAssembler::pop_ptr(Register r) { | |
| 304 | 325 pop(r); |
| 0 | 326 } |
| 327 | |
| 328 void InterpreterMacroAssembler::pop_i(Register r) { | |
| 304 | 329 // XXX can't use pop currently, upper half non clean |
| 0 | 330 movl(r, Address(rsp, 0)); |
| 304 | 331 addptr(rsp, wordSize); |
| 0 | 332 } |
| 333 | |
| 334 void InterpreterMacroAssembler::pop_l(Register r) { | |
| 335 movq(r, Address(rsp, 0)); | |
| 1506 | 336 addptr(rsp, 2 * Interpreter::stackElementSize); |
| 0 | 337 } |
| 338 | |
| 339 void InterpreterMacroAssembler::pop_f(XMMRegister r) { | |
| 340 movflt(r, Address(rsp, 0)); | |
| 304 | 341 addptr(rsp, wordSize); |
| 0 | 342 } |
| 343 | |
| 344 void InterpreterMacroAssembler::pop_d(XMMRegister r) { | |
| 345 movdbl(r, Address(rsp, 0)); | |
| 1506 | 346 addptr(rsp, 2 * Interpreter::stackElementSize); |
| 0 | 347 } |
| 348 | |
| 349 void InterpreterMacroAssembler::push_ptr(Register r) { | |
| 304 | 350 push(r); |
| 0 | 351 } |
| 352 | |
| 353 void InterpreterMacroAssembler::push_i(Register r) { | |
| 304 | 354 push(r); |
| 0 | 355 } |
| 356 | |
| 357 void InterpreterMacroAssembler::push_l(Register r) { | |
| 1506 | 358 subptr(rsp, 2 * wordSize); |
| 0 | 359 movq(Address(rsp, 0), r); |
| 360 } | |
| 361 | |
| 362 void InterpreterMacroAssembler::push_f(XMMRegister r) { | |
| 304 | 363 subptr(rsp, wordSize); |
| 0 | 364 movflt(Address(rsp, 0), r); |
| 365 } | |
| 366 | |
| 367 void InterpreterMacroAssembler::push_d(XMMRegister r) { | |
| 1506 | 368 subptr(rsp, 2 * wordSize); |
| 0 | 369 movdbl(Address(rsp, 0), r); |
| 370 } | |
| 371 | |
| 372 void InterpreterMacroAssembler::pop(TosState state) { | |
| 373 switch (state) { | |
| 374 case atos: pop_ptr(); break; | |
| 375 case btos: | |
| 376 case ctos: | |
| 377 case stos: | |
| 378 case itos: pop_i(); break; | |
| 379 case ltos: pop_l(); break; | |
| 380 case ftos: pop_f(); break; | |
| 381 case dtos: pop_d(); break; | |
| 382 case vtos: /* nothing to do */ break; | |
| 383 default: ShouldNotReachHere(); | |
| 384 } | |
| 385 verify_oop(rax, state); | |
| 386 } | |
| 387 | |
| 388 void InterpreterMacroAssembler::push(TosState state) { | |
| 389 verify_oop(rax, state); | |
| 390 switch (state) { | |
| 391 case atos: push_ptr(); break; | |
| 392 case btos: | |
| 393 case ctos: | |
| 394 case stos: | |
| 395 case itos: push_i(); break; | |
| 396 case ltos: push_l(); break; | |
| 397 case ftos: push_f(); break; | |
| 398 case dtos: push_d(); break; | |
| 399 case vtos: /* nothing to do */ break; | |
| 400 default : ShouldNotReachHere(); | |
| 401 } | |
| 402 } | |
| 403 | |
| 404 | |
| 1506 | 405 // Helpers for swap and dup |
| 406 void InterpreterMacroAssembler::load_ptr(int n, Register val) { | |
| 304 | 407 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n))); |
| 0 | 408 } |
| 409 | |
| 1506 | 410 void InterpreterMacroAssembler::store_ptr(int n, Register val) { |
| 411 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val); | |
| 0 | 412 } |
| 413 | |
| 414 | |
| 710 | 415 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() { |
| 0 | 416 // set sender sp |
| 304 | 417 lea(r13, Address(rsp, wordSize)); |
| 0 | 418 // record last_sp |
| 304 | 419 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), r13); |
| 710 | 420 } |
| 421 | |
| 422 | |
| 423 // Jump to from_interpreted entry of a call unless single stepping is possible | |
| 424 // in this thread in which case we must call the i2i entry | |
| 425 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) { | |
| 426 prepare_to_jump_from_interpreted(); | |
| 0 | 427 |
| 428 if (JvmtiExport::can_post_interpreter_events()) { | |
| 429 Label run_compiled_code; | |
| 430 // JVMTI events, such as single-stepping, are implemented partly by avoiding running | |
| 431 // compiled code in threads for which the event is enabled. Check here for | |
| 432 // interp_only_mode if these events CAN be enabled. | |
| 433 // interp_only is an int, on little endian it is sufficient to test the byte only | |
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434 // Is a cmpl faster? |
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435 cmpb(Address(r15_thread, JavaThread::interp_only_mode_offset()), 0); |
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436 jccb(Assembler::zero, run_compiled_code); |
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437 jmp(Address(method, Method::interpreter_entry_offset())); |
| 0 | 438 bind(run_compiled_code); |
| 439 } | |
| 440 | |
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441 jmp(Address(method, Method::from_interpreted_offset())); |
| 0 | 442 |
| 443 } | |
| 444 | |
| 445 | |
| 446 // The following two routines provide a hook so that an implementation | |
| 447 // can schedule the dispatch in two parts. amd64 does not do this. | |
| 448 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) { | |
| 449 // Nothing amd64 specific to be done here | |
| 450 } | |
| 451 | |
| 452 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) { | |
| 453 dispatch_next(state, step); | |
| 454 } | |
| 455 | |
| 456 void InterpreterMacroAssembler::dispatch_base(TosState state, | |
| 457 address* table, | |
| 458 bool verifyoop) { | |
| 459 verify_FPU(1, state); | |
| 460 if (VerifyActivationFrameSize) { | |
| 461 Label L; | |
| 304 | 462 mov(rcx, rbp); |
| 463 subptr(rcx, rsp); | |
| 464 int32_t min_frame_size = | |
| 0 | 465 (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * |
| 466 wordSize; | |
| 304 | 467 cmpptr(rcx, (int32_t)min_frame_size); |
| 0 | 468 jcc(Assembler::greaterEqual, L); |
| 469 stop("broken stack frame"); | |
| 470 bind(L); | |
| 471 } | |
| 472 if (verifyoop) { | |
| 473 verify_oop(rax, state); | |
| 474 } | |
| 475 lea(rscratch1, ExternalAddress((address)table)); | |
| 476 jmp(Address(rscratch1, rbx, Address::times_8)); | |
| 477 } | |
| 478 | |
| 479 void InterpreterMacroAssembler::dispatch_only(TosState state) { | |
| 480 dispatch_base(state, Interpreter::dispatch_table(state)); | |
| 481 } | |
| 482 | |
| 483 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) { | |
| 484 dispatch_base(state, Interpreter::normal_table(state)); | |
| 485 } | |
| 486 | |
| 487 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) { | |
| 488 dispatch_base(state, Interpreter::normal_table(state), false); | |
| 489 } | |
| 490 | |
| 491 | |
| 492 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) { | |
| 493 // load next bytecode (load before advancing r13 to prevent AGI) | |
| 494 load_unsigned_byte(rbx, Address(r13, step)); | |
| 495 // advance r13 | |
| 304 | 496 increment(r13, step); |
| 0 | 497 dispatch_base(state, Interpreter::dispatch_table(state)); |
| 498 } | |
| 499 | |
| 500 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) { | |
| 501 // load current bytecode | |
| 502 load_unsigned_byte(rbx, Address(r13, 0)); | |
| 503 dispatch_base(state, table); | |
| 504 } | |
| 505 | |
| 506 // remove activation | |
| 507 // | |
| 508 // Unlock the receiver if this is a synchronized method. | |
| 509 // Unlock any Java monitors from syncronized blocks. | |
| 510 // Remove the activation from the stack. | |
| 511 // | |
| 512 // If there are locked Java monitors | |
| 513 // If throw_monitor_exception | |
| 514 // throws IllegalMonitorStateException | |
| 515 // Else if install_monitor_exception | |
| 516 // installs IllegalMonitorStateException | |
| 517 // Else | |
| 518 // no error processing | |
| 519 void InterpreterMacroAssembler::remove_activation( | |
| 520 TosState state, | |
| 521 Register ret_addr, | |
| 522 bool throw_monitor_exception, | |
| 523 bool install_monitor_exception, | |
| 524 bool notify_jvmdi) { | |
| 525 // Note: Registers rdx xmm0 may be in use for the | |
| 526 // result check if synchronized method | |
| 527 Label unlocked, unlock, no_unlock; | |
| 528 | |
| 529 // get the value of _do_not_unlock_if_synchronized into rdx | |
| 530 const Address do_not_unlock_if_synchronized(r15_thread, | |
| 531 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset())); | |
| 532 movbool(rdx, do_not_unlock_if_synchronized); | |
| 533 movbool(do_not_unlock_if_synchronized, false); // reset the flag | |
| 534 | |
| 535 // get method access flags | |
| 304 | 536 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); |
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537 movl(rcx, Address(rbx, Method::access_flags_offset())); |
| 0 | 538 testl(rcx, JVM_ACC_SYNCHRONIZED); |
| 539 jcc(Assembler::zero, unlocked); | |
| 540 | |
| 541 // Don't unlock anything if the _do_not_unlock_if_synchronized flag | |
| 542 // is set. | |
| 543 testbool(rdx); | |
| 544 jcc(Assembler::notZero, no_unlock); | |
| 545 | |
| 546 // unlock monitor | |
| 547 push(state); // save result | |
| 548 | |
| 549 // BasicObjectLock will be first in list, since this is a | |
| 550 // synchronized method. However, need to check that the object has | |
| 551 // not been unlocked by an explicit monitorexit bytecode. | |
| 552 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * | |
| 553 wordSize - (int) sizeof(BasicObjectLock)); | |
| 554 // We use c_rarg1 so that if we go slow path it will be the correct | |
| 555 // register for unlock_object to pass to VM directly | |
| 304 | 556 lea(c_rarg1, monitor); // address of first monitor |
| 0 | 557 |
| 304 | 558 movptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); |
| 559 testptr(rax, rax); | |
| 0 | 560 jcc(Assembler::notZero, unlock); |
| 561 | |
| 562 pop(state); | |
| 563 if (throw_monitor_exception) { | |
| 564 // Entry already unlocked, need to throw exception | |
| 565 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 566 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 567 should_not_reach_here(); | |
| 568 } else { | |
| 569 // Monitor already unlocked during a stack unroll. If requested, | |
| 570 // install an illegal_monitor_state_exception. Continue with | |
| 571 // stack unrolling. | |
| 572 if (install_monitor_exception) { | |
| 573 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 574 InterpreterRuntime::new_illegal_monitor_state_exception)); | |
| 575 } | |
| 576 jmp(unlocked); | |
| 577 } | |
| 578 | |
| 579 bind(unlock); | |
| 580 unlock_object(c_rarg1); | |
| 581 pop(state); | |
| 582 | |
| 583 // Check that for block-structured locking (i.e., that all locked | |
| 584 // objects has been unlocked) | |
| 585 bind(unlocked); | |
| 586 | |
| 587 // rax: Might contain return value | |
| 588 | |
| 589 // Check that all monitors are unlocked | |
| 590 { | |
| 591 Label loop, exception, entry, restart; | |
| 592 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 593 const Address monitor_block_top( | |
| 594 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 595 const Address monitor_block_bot( | |
| 596 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 597 | |
| 598 bind(restart); | |
| 599 // We use c_rarg1 so that if we go slow path it will be the correct | |
| 600 // register for unlock_object to pass to VM directly | |
| 304 | 601 movptr(c_rarg1, monitor_block_top); // points to current entry, starting |
| 0 | 602 // with top-most entry |
| 304 | 603 lea(rbx, monitor_block_bot); // points to word before bottom of |
| 0 | 604 // monitor block |
| 605 jmp(entry); | |
| 606 | |
| 607 // Entry already locked, need to throw exception | |
| 608 bind(exception); | |
| 609 | |
| 610 if (throw_monitor_exception) { | |
| 611 // Throw exception | |
| 612 MacroAssembler::call_VM(noreg, | |
| 613 CAST_FROM_FN_PTR(address, InterpreterRuntime:: | |
| 614 throw_illegal_monitor_state_exception)); | |
| 615 should_not_reach_here(); | |
| 616 } else { | |
| 617 // Stack unrolling. Unlock object and install illegal_monitor_exception. | |
| 618 // Unlock does not block, so don't have to worry about the frame. | |
| 619 // We don't have to preserve c_rarg1 since we are going to throw an exception. | |
| 620 | |
| 621 push(state); | |
| 622 unlock_object(c_rarg1); | |
| 623 pop(state); | |
| 624 | |
| 625 if (install_monitor_exception) { | |
| 626 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 627 InterpreterRuntime:: | |
| 628 new_illegal_monitor_state_exception)); | |
| 629 } | |
| 630 | |
| 631 jmp(restart); | |
| 632 } | |
| 633 | |
| 634 bind(loop); | |
| 635 // check if current entry is used | |
| 304 | 636 cmpptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL); |
| 0 | 637 jcc(Assembler::notEqual, exception); |
| 638 | |
| 304 | 639 addptr(c_rarg1, entry_size); // otherwise advance to next entry |
| 0 | 640 bind(entry); |
| 304 | 641 cmpptr(c_rarg1, rbx); // check if bottom reached |
| 0 | 642 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry |
| 643 } | |
| 644 | |
| 645 bind(no_unlock); | |
| 646 | |
| 647 // jvmti support | |
| 648 if (notify_jvmdi) { | |
| 649 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA | |
| 650 } else { | |
| 651 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA | |
| 652 } | |
| 653 | |
| 654 // remove activation | |
| 655 // get sender sp | |
| 304 | 656 movptr(rbx, |
| 657 Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); | |
| 0 | 658 leave(); // remove frame anchor |
| 304 | 659 pop(ret_addr); // get return address |
| 660 mov(rsp, rbx); // set sp to sender sp | |
| 0 | 661 } |
| 662 | |
| 304 | 663 #endif // C_INTERP |
| 664 | |
| 0 | 665 // Lock object |
| 666 // | |
| 667 // Args: | |
| 668 // c_rarg1: BasicObjectLock to be used for locking | |
| 669 // | |
| 670 // Kills: | |
| 671 // rax | |
| 672 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, .. (param regs) | |
| 673 // rscratch1, rscratch2 (scratch regs) | |
| 674 void InterpreterMacroAssembler::lock_object(Register lock_reg) { | |
| 675 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be c_rarg1"); | |
| 676 | |
| 677 if (UseHeavyMonitors) { | |
| 678 call_VM(noreg, | |
| 679 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), | |
| 680 lock_reg); | |
| 681 } else { | |
| 682 Label done; | |
| 683 | |
| 684 const Register swap_reg = rax; // Must use rax for cmpxchg instruction | |
| 685 const Register obj_reg = c_rarg3; // Will contain the oop | |
| 686 | |
| 687 const int obj_offset = BasicObjectLock::obj_offset_in_bytes(); | |
| 688 const int lock_offset = BasicObjectLock::lock_offset_in_bytes (); | |
| 689 const int mark_offset = lock_offset + | |
| 690 BasicLock::displaced_header_offset_in_bytes(); | |
| 691 | |
| 692 Label slow_case; | |
| 693 | |
| 694 // Load object pointer into obj_reg %c_rarg3 | |
| 304 | 695 movptr(obj_reg, Address(lock_reg, obj_offset)); |
| 0 | 696 |
| 697 if (UseBiasedLocking) { | |
| 698 biased_locking_enter(lock_reg, obj_reg, swap_reg, rscratch1, false, done, &slow_case); | |
| 699 } | |
| 700 | |
| 701 // Load immediate 1 into swap_reg %rax | |
| 702 movl(swap_reg, 1); | |
| 703 | |
| 704 // Load (object->mark() | 1) into swap_reg %rax | |
| 304 | 705 orptr(swap_reg, Address(obj_reg, 0)); |
| 0 | 706 |
| 707 // Save (object->mark() | 1) into BasicLock's displaced header | |
| 304 | 708 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 709 |
| 710 assert(lock_offset == 0, | |
| 711 "displached header must be first word in BasicObjectLock"); | |
| 712 | |
| 713 if (os::is_MP()) lock(); | |
| 304 | 714 cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
| 0 | 715 if (PrintBiasedLockingStatistics) { |
| 716 cond_inc32(Assembler::zero, | |
| 717 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 718 } | |
| 719 jcc(Assembler::zero, done); | |
| 720 | |
| 721 // Test if the oopMark is an obvious stack pointer, i.e., | |
| 722 // 1) (mark & 7) == 0, and | |
| 723 // 2) rsp <= mark < mark + os::pagesize() | |
| 724 // | |
| 725 // These 3 tests can be done by evaluating the following | |
| 726 // expression: ((mark - rsp) & (7 - os::vm_page_size())), | |
| 727 // assuming both stack pointer and pagesize have their | |
| 728 // least significant 3 bits clear. | |
| 729 // NOTE: the oopMark is in swap_reg %rax as the result of cmpxchg | |
| 304 | 730 subptr(swap_reg, rsp); |
| 731 andptr(swap_reg, 7 - os::vm_page_size()); | |
| 0 | 732 |
| 733 // Save the test result, for recursive case, the result is zero | |
| 304 | 734 movptr(Address(lock_reg, mark_offset), swap_reg); |
| 0 | 735 |
| 736 if (PrintBiasedLockingStatistics) { | |
| 737 cond_inc32(Assembler::zero, | |
| 738 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr())); | |
| 739 } | |
| 740 jcc(Assembler::zero, done); | |
| 741 | |
| 742 bind(slow_case); | |
| 743 | |
| 744 // Call the runtime routine for slow case | |
| 745 call_VM(noreg, | |
| 746 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), | |
| 747 lock_reg); | |
| 748 | |
| 749 bind(done); | |
| 750 } | |
| 751 } | |
| 752 | |
| 753 | |
| 754 // Unlocks an object. Used in monitorexit bytecode and | |
| 755 // remove_activation. Throws an IllegalMonitorException if object is | |
| 756 // not locked by current thread. | |
| 757 // | |
| 758 // Args: | |
| 759 // c_rarg1: BasicObjectLock for lock | |
| 760 // | |
| 761 // Kills: | |
| 762 // rax | |
| 763 // c_rarg0, c_rarg1, c_rarg2, c_rarg3, ... (param regs) | |
| 764 // rscratch1, rscratch2 (scratch regs) | |
| 765 void InterpreterMacroAssembler::unlock_object(Register lock_reg) { | |
| 766 assert(lock_reg == c_rarg1, "The argument is only for looks. It must be rarg1"); | |
| 767 | |
| 768 if (UseHeavyMonitors) { | |
| 769 call_VM(noreg, | |
| 770 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), | |
| 771 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 = c_rarg2; // Will contain the old oopMark | |
| 777 const Register obj_reg = c_rarg3; // Will contain the oop | |
| 778 | |
| 779 save_bcp(); // Save in case of exception | |
| 780 | |
| 781 // Convert from BasicObjectLock structure to object and BasicLock | |
| 782 // structure 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(%c_rarg3) | |
| 304 | 786 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes())); |
| 0 | 787 |
| 788 // Free entry | |
| 304 | 789 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), (int32_t)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, |
| 797 BasicLock::displaced_header_offset_in_bytes())); | |
| 0 | 798 |
| 799 // Test for recursion | |
| 304 | 800 testptr(header_reg, header_reg); |
| 0 | 801 |
| 802 // zero for recursive case | |
| 803 jcc(Assembler::zero, done); | |
| 804 | |
| 805 // Atomic swap back the old header | |
| 806 if (os::is_MP()) lock(); | |
| 304 | 807 cmpxchgptr(header_reg, Address(obj_reg, 0)); |
| 0 | 808 |
| 809 // zero for recursive case | |
| 810 jcc(Assembler::zero, done); | |
| 811 | |
| 812 // Call the runtime routine for slow case. | |
| 304 | 813 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), |
| 0 | 814 obj_reg); // restore obj |
| 815 call_VM(noreg, | |
| 816 CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), | |
| 817 lock_reg); | |
| 818 | |
| 819 bind(done); | |
| 820 | |
| 821 restore_bcp(); | |
| 822 } | |
| 823 } | |
| 824 | |
| 304 | 825 #ifndef CC_INTERP |
| 0 | 826 |
| 827 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, | |
| 828 Label& zero_continue) { | |
| 829 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 830 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize)); |
| 831 testptr(mdp, mdp); | |
| 0 | 832 jcc(Assembler::zero, zero_continue); |
| 833 } | |
| 834 | |
| 835 | |
| 836 // Set the method data pointer for the current bcp. | |
| 837 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() { | |
| 838 assert(ProfileInterpreter, "must be profiling interpreter"); | |
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839 Label set_mdp; |
| 304 | 840 push(rax); |
| 841 push(rbx); | |
| 0 | 842 |
| 843 get_method(rbx); | |
| 844 // Test MDO to avoid the call if it is NULL. | |
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845 movptr(rax, Address(rbx, in_bytes(Method::method_data_offset()))); |
| 304 | 846 testptr(rax, rax); |
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847 jcc(Assembler::zero, set_mdp); |
| 0 | 848 // rbx: method |
| 849 // r13: bcp | |
| 850 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, r13); | |
| 851 // rax: mdi | |
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852 // mdo is guaranteed to be non-zero here, we checked for it before the call. |
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853 movptr(rbx, Address(rbx, in_bytes(Method::method_data_offset()))); |
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854 addptr(rbx, in_bytes(MethodData::data_offset())); |
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855 addptr(rax, rbx); |
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856 bind(set_mdp); |
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857 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rax); |
| 304 | 858 pop(rbx); |
| 859 pop(rax); | |
| 0 | 860 } |
| 861 | |
| 862 void InterpreterMacroAssembler::verify_method_data_pointer() { | |
| 863 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 864 #ifdef ASSERT | |
| 865 Label verify_continue; | |
| 304 | 866 push(rax); |
| 867 push(rbx); | |
| 868 push(c_rarg3); | |
| 869 push(c_rarg2); | |
| 0 | 870 test_method_data_pointer(c_rarg3, verify_continue); // If mdp is zero, continue |
| 871 get_method(rbx); | |
| 872 | |
| 873 // If the mdp is valid, it will point to a DataLayout header which is | |
| 874 // consistent with the bcp. The converse is highly probable also. | |
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875 load_unsigned_short(c_rarg2, |
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876 Address(c_rarg3, in_bytes(DataLayout::bci_offset()))); |
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877 addptr(c_rarg2, Address(rbx, Method::const_offset())); |
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878 lea(c_rarg2, Address(c_rarg2, ConstMethod::codes_offset())); |
| 304 | 879 cmpptr(c_rarg2, r13); |
| 0 | 880 jcc(Assembler::equal, verify_continue); |
| 881 // rbx: method | |
| 882 // r13: bcp | |
| 883 // c_rarg3: mdp | |
| 884 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), | |
| 885 rbx, r13, c_rarg3); | |
| 886 bind(verify_continue); | |
| 304 | 887 pop(c_rarg2); |
| 888 pop(c_rarg3); | |
| 889 pop(rbx); | |
| 890 pop(rax); | |
| 0 | 891 #endif // ASSERT |
| 892 } | |
| 893 | |
| 894 | |
| 895 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, | |
| 896 int constant, | |
| 897 Register value) { | |
| 898 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 899 Address data(mdp_in, constant); | |
| 304 | 900 movptr(data, value); |
| 0 | 901 } |
| 902 | |
| 903 | |
| 904 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 905 int constant, | |
| 906 bool decrement) { | |
| 907 // Counter address | |
| 908 Address data(mdp_in, constant); | |
| 909 | |
| 910 increment_mdp_data_at(data, decrement); | |
| 911 } | |
| 912 | |
| 913 void InterpreterMacroAssembler::increment_mdp_data_at(Address data, | |
| 914 bool decrement) { | |
| 915 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 916 // %%% this does 64bit counters at best it is wasting space |
| 917 // at worst it is a rare bug when counters overflow | |
| 0 | 918 |
| 919 if (decrement) { | |
| 920 // Decrement the register. Set condition codes. | |
| 304 | 921 addptr(data, (int32_t) -DataLayout::counter_increment); |
| 0 | 922 // If the decrement causes the counter to overflow, stay negative |
| 923 Label L; | |
| 924 jcc(Assembler::negative, L); | |
| 304 | 925 addptr(data, (int32_t) DataLayout::counter_increment); |
| 0 | 926 bind(L); |
| 927 } else { | |
| 928 assert(DataLayout::counter_increment == 1, | |
| 929 "flow-free idiom only works with 1"); | |
| 930 // Increment the register. Set carry flag. | |
| 304 | 931 addptr(data, DataLayout::counter_increment); |
| 0 | 932 // If the increment causes the counter to overflow, pull back by 1. |
| 304 | 933 sbbptr(data, (int32_t)0); |
| 0 | 934 } |
| 935 } | |
| 936 | |
| 937 | |
| 938 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in, | |
| 939 Register reg, | |
| 940 int constant, | |
| 941 bool decrement) { | |
| 942 Address data(mdp_in, reg, Address::times_1, constant); | |
| 943 | |
| 944 increment_mdp_data_at(data, decrement); | |
| 945 } | |
| 946 | |
| 947 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, | |
| 948 int flag_byte_constant) { | |
| 949 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 950 int header_offset = in_bytes(DataLayout::header_offset()); | |
| 951 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant); | |
| 952 // Set the flag | |
| 953 orl(Address(mdp_in, header_offset), header_bits); | |
| 954 } | |
| 955 | |
| 956 | |
| 957 | |
| 958 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in, | |
| 959 int offset, | |
| 960 Register value, | |
| 961 Register test_value_out, | |
| 962 Label& not_equal_continue) { | |
| 963 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 964 if (test_value_out == noreg) { | |
| 304 | 965 cmpptr(value, Address(mdp_in, offset)); |
| 0 | 966 } else { |
| 967 // Put the test value into a register, so caller can use it: | |
| 304 | 968 movptr(test_value_out, Address(mdp_in, offset)); |
| 969 cmpptr(test_value_out, value); | |
| 0 | 970 } |
| 971 jcc(Assembler::notEqual, not_equal_continue); | |
| 972 } | |
| 973 | |
| 974 | |
| 975 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, | |
| 976 int offset_of_disp) { | |
| 977 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 978 Address disp_address(mdp_in, offset_of_disp); | |
| 304 | 979 addptr(mdp_in, disp_address); |
| 980 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 981 } |
| 982 | |
| 983 | |
| 984 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, | |
| 985 Register reg, | |
| 986 int offset_of_disp) { | |
| 987 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 988 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp); | |
| 304 | 989 addptr(mdp_in, disp_address); |
| 990 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 991 } |
| 992 | |
| 993 | |
| 994 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, | |
| 995 int constant) { | |
| 996 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 997 addptr(mdp_in, constant); |
| 998 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in); | |
| 0 | 999 } |
| 1000 | |
| 1001 | |
| 1002 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) { | |
| 1003 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 304 | 1004 push(return_bci); // save/restore across call_VM |
| 0 | 1005 call_VM(noreg, |
| 1006 CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), | |
| 1007 return_bci); | |
| 304 | 1008 pop(return_bci); |
| 0 | 1009 } |
| 1010 | |
| 1011 | |
| 1012 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, | |
| 1013 Register bumped_count) { | |
| 1014 if (ProfileInterpreter) { | |
| 1015 Label profile_continue; | |
| 1016 | |
| 1017 // If no method data exists, go to profile_continue. | |
| 1018 // Otherwise, assign to mdp | |
| 1019 test_method_data_pointer(mdp, profile_continue); | |
| 1020 | |
| 1021 // We are taking a branch. Increment the taken count. | |
| 1022 // We inline increment_mdp_data_at to return bumped_count in a register | |
| 1023 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset())); | |
| 1024 Address data(mdp, in_bytes(JumpData::taken_offset())); | |
| 304 | 1025 movptr(bumped_count, data); |
| 0 | 1026 assert(DataLayout::counter_increment == 1, |
| 1027 "flow-free idiom only works with 1"); | |
| 304 | 1028 addptr(bumped_count, DataLayout::counter_increment); |
| 1029 sbbptr(bumped_count, 0); | |
| 1030 movptr(data, bumped_count); // Store back out | |
| 0 | 1031 |
| 1032 // The method data pointer needs to be updated to reflect the new target. | |
| 1033 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset())); | |
| 1034 bind(profile_continue); | |
| 1035 } | |
| 1036 } | |
| 1037 | |
| 1038 | |
| 1039 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) { | |
| 1040 if (ProfileInterpreter) { | |
| 1041 Label profile_continue; | |
| 1042 | |
| 1043 // If no method data exists, go to profile_continue. | |
| 1044 test_method_data_pointer(mdp, profile_continue); | |
| 1045 | |
| 1046 // We are taking a branch. Increment the not taken count. | |
| 1047 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset())); | |
| 1048 | |
| 1049 // The method data pointer needs to be updated to correspond to | |
| 1050 // the next bytecode | |
| 1051 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size())); | |
| 1052 bind(profile_continue); | |
| 1053 } | |
| 1054 } | |
| 1055 | |
| 1056 | |
| 1057 void InterpreterMacroAssembler::profile_call(Register mdp) { | |
| 1058 if (ProfileInterpreter) { | |
| 1059 Label profile_continue; | |
| 1060 | |
| 1061 // If no method data exists, go to profile_continue. | |
| 1062 test_method_data_pointer(mdp, profile_continue); | |
| 1063 | |
| 1064 // We are making a call. Increment the count. | |
| 1065 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1066 | |
| 1067 // The method data pointer needs to be updated to reflect the new target. | |
| 1068 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size())); | |
| 1069 bind(profile_continue); | |
| 1070 } | |
| 1071 } | |
| 1072 | |
| 1073 | |
| 1074 void InterpreterMacroAssembler::profile_final_call(Register mdp) { | |
| 1075 if (ProfileInterpreter) { | |
| 1076 Label profile_continue; | |
| 1077 | |
| 1078 // If no method data exists, go to profile_continue. | |
| 1079 test_method_data_pointer(mdp, profile_continue); | |
| 1080 | |
| 1081 // We are making a call. Increment the count. | |
| 1082 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1083 | |
| 1084 // The method data pointer needs to be updated to reflect the new target. | |
| 1085 update_mdp_by_constant(mdp, | |
| 1086 in_bytes(VirtualCallData:: | |
| 1087 virtual_call_data_size())); | |
| 1088 bind(profile_continue); | |
| 1089 } | |
| 1090 } | |
| 1091 | |
| 1092 | |
| 1093 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, | |
| 1094 Register mdp, | |
| 1108 | 1095 Register reg2, |
| 1096 bool receiver_can_be_null) { | |
| 0 | 1097 if (ProfileInterpreter) { |
| 1098 Label profile_continue; | |
| 1099 | |
| 1100 // If no method data exists, go to profile_continue. | |
| 1101 test_method_data_pointer(mdp, profile_continue); | |
| 1102 | |
| 1108 | 1103 Label skip_receiver_profile; |
| 1104 if (receiver_can_be_null) { | |
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1105 Label not_null; |
| 1108 | 1106 testptr(receiver, receiver); |
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1107 jccb(Assembler::notZero, not_null); |
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1108 // We are making a call. Increment the count for null receiver. |
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1109 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1110 jmp(skip_receiver_profile); |
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1111 bind(not_null); |
| 1108 | 1112 } |
| 1113 | |
| 0 | 1114 // Record the receiver type. |
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1115 record_klass_in_profile(receiver, mdp, reg2, true); |
| 1108 | 1116 bind(skip_receiver_profile); |
| 0 | 1117 |
| 1118 // The method data pointer needs to be updated to reflect the new target. | |
| 1119 update_mdp_by_constant(mdp, | |
| 1120 in_bytes(VirtualCallData:: | |
| 1121 virtual_call_data_size())); | |
| 1122 bind(profile_continue); | |
| 1123 } | |
| 1124 } | |
| 1125 | |
| 1126 // This routine creates a state machine for updating the multi-row | |
| 1127 // type profile at a virtual call site (or other type-sensitive bytecode). | |
| 1128 // The machine visits each row (of receiver/count) until the receiver type | |
| 1129 // is found, or until it runs out of rows. At the same time, it remembers | |
| 1130 // the location of the first empty row. (An empty row records null for its | |
| 1131 // receiver, and can be allocated for a newly-observed receiver type.) | |
| 1132 // Because there are two degrees of freedom in the state, a simple linear | |
| 1133 // search will not work; it must be a decision tree. Hence this helper | |
| 1134 // function is recursive, to generate the required tree structured code. | |
| 1135 // It's the interpreter, so we are trading off code space for speed. | |
| 1136 // See below for example code. | |
| 1137 void InterpreterMacroAssembler::record_klass_in_profile_helper( | |
| 1138 Register receiver, Register mdp, | |
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1139 Register reg2, int start_row, |
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1140 Label& done, bool is_virtual_call) { |
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1141 if (TypeProfileWidth == 0) { |
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1142 if (is_virtual_call) { |
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1143 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); |
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1144 } |
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1145 #ifdef GRAAL |
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1146 else { |
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1147 increment_mdp_data_at(mdp, in_bytes(ReceiverTypeData::nonprofiled_receiver_count_offset())); |
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1148 } |
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1149 #endif |
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1150 return; |
|
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1151 } |
|
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1152 |
| 0 | 1153 int last_row = VirtualCallData::row_limit() - 1; |
| 1154 assert(start_row <= last_row, "must be work left to do"); | |
| 1155 // Test this row for both the receiver and for null. | |
| 1156 // Take any of three different outcomes: | |
| 1157 // 1. found receiver => increment count and goto done | |
| 1158 // 2. found null => keep looking for case 1, maybe allocate this cell | |
| 1159 // 3. found something else => keep looking for cases 1 and 2 | |
| 1160 // Case 3 is handled by a recursive call. | |
| 1161 for (int row = start_row; row <= last_row; row++) { | |
| 1162 Label next_test; | |
| 1163 bool test_for_null_also = (row == start_row); | |
| 1164 | |
| 1165 // See if the receiver is receiver[n]. | |
| 1166 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row)); | |
| 1167 test_mdp_data_at(mdp, recvr_offset, receiver, | |
| 1168 (test_for_null_also ? reg2 : noreg), | |
| 1169 next_test); | |
| 1170 // (Reg2 now contains the receiver from the CallData.) | |
| 1171 | |
| 1172 // The receiver is receiver[n]. Increment count[n]. | |
| 1173 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row)); | |
| 1174 increment_mdp_data_at(mdp, count_offset); | |
| 1175 jmp(done); | |
| 1176 bind(next_test); | |
| 1177 | |
| 1178 if (test_for_null_also) { | |
|
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1179 Label found_null; |
| 0 | 1180 // Failed the equality check on receiver[n]... Test for null. |
| 304 | 1181 testptr(reg2, reg2); |
| 0 | 1182 if (start_row == last_row) { |
| 1183 // The only thing left to do is handle the null case. | |
|
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1184 if (is_virtual_call GRAAL_ONLY(|| true)) { |
|
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1185 jccb(Assembler::zero, found_null); |
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1186 // Receiver did not match any saved receiver and there is no empty row for it. |
|
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1187 // Increment total counter to indicate polymorphic case. |
|
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1188 int offset = in_bytes(CounterData::count_offset()); |
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1189 #ifdef GRAAL |
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1190 if (!is_virtual_call) { |
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1191 offset = in_bytes(ReceiverTypeData::nonprofiled_receiver_count_offset()); |
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1192 } |
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1193 #endif |
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1194 increment_mdp_data_at(mdp, offset); |
|
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1195 jmp(done); |
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1196 bind(found_null); |
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1197 } else { |
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1198 jcc(Assembler::notZero, done); |
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1199 } |
| 0 | 1200 break; |
| 1201 } | |
| 1202 // Since null is rare, make it be the branch-taken case. | |
| 1203 jcc(Assembler::zero, found_null); | |
| 1204 | |
| 1205 // Put all the "Case 3" tests here. | |
|
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1206 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call); |
| 0 | 1207 |
| 1208 // Found a null. Keep searching for a matching receiver, | |
| 1209 // but remember that this is an empty (unused) slot. | |
| 1210 bind(found_null); | |
| 1211 } | |
| 1212 } | |
| 1213 | |
| 1214 // In the fall-through case, we found no matching receiver, but we | |
| 1215 // observed the receiver[start_row] is NULL. | |
| 1216 | |
| 1217 // Fill in the receiver field and increment the count. | |
| 1218 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row)); | |
| 1219 set_mdp_data_at(mdp, recvr_offset, receiver); | |
| 1220 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row)); | |
| 1221 movl(reg2, DataLayout::counter_increment); | |
| 1222 set_mdp_data_at(mdp, count_offset, reg2); | |
|
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1223 if (start_row > 0) { |
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1224 jmp(done); |
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1225 } |
| 0 | 1226 } |
| 1227 | |
| 1228 // Example state machine code for three profile rows: | |
| 1229 // // main copy of decision tree, rooted at row[1] | |
| 1230 // if (row[0].rec == rec) { row[0].incr(); goto done; } | |
| 1231 // if (row[0].rec != NULL) { | |
| 1232 // // inner copy of decision tree, rooted at row[1] | |
| 1233 // if (row[1].rec == rec) { row[1].incr(); goto done; } | |
| 1234 // if (row[1].rec != NULL) { | |
| 1235 // // degenerate decision tree, rooted at row[2] | |
| 1236 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
|
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1237 // if (row[2].rec != NULL) { count.incr(); goto done; } // overflow |
| 0 | 1238 // row[2].init(rec); goto done; |
| 1239 // } else { | |
| 1240 // // remember row[1] is empty | |
| 1241 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
| 1242 // row[1].init(rec); goto done; | |
| 1243 // } | |
| 1244 // } else { | |
| 1245 // // remember row[0] is empty | |
| 1246 // if (row[1].rec == rec) { row[1].incr(); goto done; } | |
| 1247 // if (row[2].rec == rec) { row[2].incr(); goto done; } | |
| 1248 // row[0].init(rec); goto done; | |
| 1249 // } | |
|
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1250 // done: |
| 0 | 1251 |
| 1252 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver, | |
|
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1253 Register mdp, Register reg2, |
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1254 bool is_virtual_call) { |
| 0 | 1255 assert(ProfileInterpreter, "must be profiling"); |
| 1256 Label done; | |
| 1257 | |
|
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1258 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call); |
| 0 | 1259 |
| 1260 bind (done); | |
| 1261 } | |
| 1262 | |
| 1263 void InterpreterMacroAssembler::profile_ret(Register return_bci, | |
| 1264 Register mdp) { | |
| 1265 if (ProfileInterpreter) { | |
| 1266 Label profile_continue; | |
| 1267 uint row; | |
| 1268 | |
| 1269 // If no method data exists, go to profile_continue. | |
| 1270 test_method_data_pointer(mdp, profile_continue); | |
| 1271 | |
| 1272 // Update the total ret count. | |
| 1273 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset())); | |
| 1274 | |
| 1275 for (row = 0; row < RetData::row_limit(); row++) { | |
| 1276 Label next_test; | |
| 1277 | |
| 1278 // See if return_bci is equal to bci[n]: | |
| 1279 test_mdp_data_at(mdp, | |
| 1280 in_bytes(RetData::bci_offset(row)), | |
| 1281 return_bci, noreg, | |
| 1282 next_test); | |
| 1283 | |
| 1284 // return_bci is equal to bci[n]. Increment the count. | |
| 1285 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row))); | |
| 1286 | |
| 1287 // The method data pointer needs to be updated to reflect the new target. | |
| 1288 update_mdp_by_offset(mdp, | |
| 1289 in_bytes(RetData::bci_displacement_offset(row))); | |
| 1290 jmp(profile_continue); | |
| 1291 bind(next_test); | |
| 1292 } | |
| 1293 | |
| 1294 update_mdp_for_ret(return_bci); | |
| 1295 | |
| 1296 bind(profile_continue); | |
| 1297 } | |
| 1298 } | |
| 1299 | |
| 1300 | |
| 1301 void InterpreterMacroAssembler::profile_null_seen(Register mdp) { | |
| 1302 if (ProfileInterpreter) { | |
| 1303 Label profile_continue; | |
| 1304 | |
| 1305 // If no method data exists, go to profile_continue. | |
| 1306 test_method_data_pointer(mdp, profile_continue); | |
| 1307 | |
|
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1308 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant()); |
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1309 |
| 0 | 1310 // The method data pointer needs to be updated. |
| 1311 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1312 if (TypeProfileCasts) { | |
| 1313 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1314 } | |
| 1315 update_mdp_by_constant(mdp, mdp_delta); | |
| 1316 | |
| 1317 bind(profile_continue); | |
| 1318 } | |
| 1319 } | |
| 1320 | |
| 1321 | |
| 1322 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) { | |
| 1323 if (ProfileInterpreter && TypeProfileCasts) { | |
| 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 int count_offset = in_bytes(CounterData::count_offset()); | |
| 1330 // Back up the address, since we have already bumped the mdp. | |
| 1331 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1332 | |
| 1333 // *Decrement* the counter. We expect to see zero or small negatives. | |
| 1334 increment_mdp_data_at(mdp, count_offset, true); | |
| 1335 | |
| 1336 bind (profile_continue); | |
| 1337 } | |
| 1338 } | |
| 1339 | |
| 1340 | |
| 1341 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2) { | |
| 1342 if (ProfileInterpreter) { | |
| 1343 Label profile_continue; | |
| 1344 | |
| 1345 // If no method data exists, go to profile_continue. | |
| 1346 test_method_data_pointer(mdp, profile_continue); | |
| 1347 | |
| 1348 // The method data pointer needs to be updated. | |
| 1349 int mdp_delta = in_bytes(BitData::bit_data_size()); | |
| 1350 if (TypeProfileCasts) { | |
| 1351 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size()); | |
| 1352 | |
| 1353 // Record the object type. | |
|
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1354 record_klass_in_profile(klass, mdp, reg2, false); |
| 0 | 1355 } |
| 1356 update_mdp_by_constant(mdp, mdp_delta); | |
| 1357 | |
| 1358 bind(profile_continue); | |
| 1359 } | |
| 1360 } | |
| 1361 | |
| 1362 | |
| 1363 void InterpreterMacroAssembler::profile_switch_default(Register mdp) { | |
| 1364 if (ProfileInterpreter) { | |
| 1365 Label profile_continue; | |
| 1366 | |
| 1367 // If no method data exists, go to profile_continue. | |
| 1368 test_method_data_pointer(mdp, profile_continue); | |
| 1369 | |
| 1370 // Update the default case count | |
| 1371 increment_mdp_data_at(mdp, | |
| 1372 in_bytes(MultiBranchData::default_count_offset())); | |
| 1373 | |
| 1374 // The method data pointer needs to be updated. | |
| 1375 update_mdp_by_offset(mdp, | |
| 1376 in_bytes(MultiBranchData:: | |
| 1377 default_displacement_offset())); | |
| 1378 | |
| 1379 bind(profile_continue); | |
| 1380 } | |
| 1381 } | |
| 1382 | |
| 1383 | |
| 1384 void InterpreterMacroAssembler::profile_switch_case(Register index, | |
| 1385 Register mdp, | |
| 1386 Register reg2) { | |
| 1387 if (ProfileInterpreter) { | |
| 1388 Label profile_continue; | |
| 1389 | |
| 1390 // If no method data exists, go to profile_continue. | |
| 1391 test_method_data_pointer(mdp, profile_continue); | |
| 1392 | |
| 1393 // Build the base (index * per_case_size_in_bytes()) + | |
| 1394 // case_array_offset_in_bytes() | |
| 1395 movl(reg2, in_bytes(MultiBranchData::per_case_size())); | |
| 304 | 1396 imulptr(index, reg2); // XXX l ? |
| 1397 addptr(index, in_bytes(MultiBranchData::case_array_offset())); // XXX l ? | |
| 0 | 1398 |
| 1399 // Update the case count | |
| 1400 increment_mdp_data_at(mdp, | |
| 1401 index, | |
| 1402 in_bytes(MultiBranchData::relative_count_offset())); | |
| 1403 | |
| 1404 // The method data pointer needs to be updated. | |
| 1405 update_mdp_by_offset(mdp, | |
| 1406 index, | |
| 1407 in_bytes(MultiBranchData:: | |
| 1408 relative_displacement_offset())); | |
| 1409 | |
| 1410 bind(profile_continue); | |
| 1411 } | |
| 1412 } | |
| 1413 | |
| 1414 | |
| 304 | 1415 |
| 0 | 1416 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) { |
| 1417 if (state == atos) { | |
| 1418 MacroAssembler::verify_oop(reg); | |
| 1419 } | |
| 1420 } | |
| 1421 | |
| 1422 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) { | |
| 1423 } | |
| 304 | 1424 #endif // !CC_INTERP |
| 0 | 1425 |
| 1426 | |
| 1427 void InterpreterMacroAssembler::notify_method_entry() { | |
| 1428 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1429 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1430 // the code to check if the event should be sent. | |
| 1431 if (JvmtiExport::can_post_interpreter_events()) { | |
| 1432 Label L; | |
| 1433 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset())); | |
| 1434 testl(rdx, rdx); | |
| 1435 jcc(Assembler::zero, L); | |
| 1436 call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 1437 InterpreterRuntime::post_method_entry)); | |
| 1438 bind(L); | |
| 1439 } | |
| 1440 | |
| 1441 { | |
| 1442 SkipIfEqual skip(this, &DTraceMethodProbes, false); | |
| 1443 get_method(c_rarg1); | |
| 1444 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), | |
| 1445 r15_thread, c_rarg1); | |
| 1446 } | |
|
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1448 // RedefineClasses() tracing support for obsolete method entry |
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1449 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
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1450 get_method(c_rarg1); |
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1451 call_VM_leaf( |
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1452 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
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1453 r15_thread, c_rarg1); |
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1454 } |
| 0 | 1455 } |
| 1456 | |
| 1457 | |
| 1458 void InterpreterMacroAssembler::notify_method_exit( | |
| 1459 TosState state, NotifyMethodExitMode mode) { | |
| 1460 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to | |
| 1461 // track stack depth. If it is possible to enter interp_only_mode we add | |
| 1462 // the code to check if the event should be sent. | |
| 1463 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) { | |
| 1464 Label L; | |
| 1465 // Note: frame::interpreter_frame_result has a dependency on how the | |
| 1466 // method result is saved across the call to post_method_exit. If this | |
| 1467 // is changed then the interpreter_frame_result implementation will | |
| 1468 // need to be updated too. | |
| 304 | 1469 |
| 1470 // For c++ interpreter the result is always stored at a known location in the frame | |
| 1471 // template interpreter will leave it on the top of the stack. | |
| 1472 NOT_CC_INTERP(push(state);) | |
| 0 | 1473 movl(rdx, Address(r15_thread, JavaThread::interp_only_mode_offset())); |
| 1474 testl(rdx, rdx); | |
| 1475 jcc(Assembler::zero, L); | |
| 1476 call_VM(noreg, | |
| 1477 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit)); | |
| 1478 bind(L); | |
| 304 | 1479 NOT_CC_INTERP(pop(state)); |
| 0 | 1480 } |
| 1481 | |
| 1482 { | |
| 1483 SkipIfEqual skip(this, &DTraceMethodProbes, false); | |
| 304 | 1484 NOT_CC_INTERP(push(state)); |
| 0 | 1485 get_method(c_rarg1); |
| 1486 call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
| 1487 r15_thread, c_rarg1); | |
| 304 | 1488 NOT_CC_INTERP(pop(state)); |
| 0 | 1489 } |
| 1490 } | |
| 1783 | 1491 |
| 1492 // Jump if ((*counter_addr += increment) & mask) satisfies the condition. | |
| 1493 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr, | |
| 1494 int increment, int mask, | |
| 1495 Register scratch, bool preloaded, | |
| 1496 Condition cond, Label* where) { | |
| 1497 if (!preloaded) { | |
| 1498 movl(scratch, counter_addr); | |
| 1499 } | |
| 1500 incrementl(scratch, increment); | |
| 1501 movl(counter_addr, scratch); | |
| 1502 andl(scratch, mask); | |
| 1503 jcc(cond, *where); | |
| 1504 } |