Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 Google Inc. All Rights Reserved. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "runtime_support.h" |
| 18 | |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 19 | #include "dex_cache.h" |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 20 | #include "dex_verifier.h" |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 21 | #include "macros.h" |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 22 | #include "reflection.h" |
| 23 | #include "ScopedLocalRef.h" |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 24 | |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 25 | namespace art { |
| 26 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 27 | // Place a special frame at the TOS that will save the callee saves for the given type |
| 28 | static void FinishCalleeSaveFrameSetup(Thread* self, Method** sp, Runtime::CalleeSaveType type) { |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 29 | // Be aware the store below may well stomp on an incoming argument |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 30 | *sp = Runtime::Current()->GetCalleeSaveMethod(type); |
| 31 | self->SetTopOfStack(sp, 0); |
| 32 | } |
| 33 | |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 34 | // Temporary debugging hook for compiler. |
| 35 | extern void DebugMe(Method* method, uint32_t info) { |
| 36 | LOG(INFO) << "DebugMe"; |
| 37 | if (method != NULL) { |
| 38 | LOG(INFO) << PrettyMethod(method); |
| 39 | } |
| 40 | LOG(INFO) << "Info: " << info; |
| 41 | } |
| 42 | |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 43 | void ObjectInitFromCode(Object* o) { |
| 44 | Class* c = o->GetClass(); |
| 45 | if (UNLIKELY(c->IsFinalizable())) { |
| 46 | Heap::AddFinalizerReference(o); |
| 47 | } |
| 48 | /* |
| 49 | * NOTE: once debugger/profiler support is added, we'll need to check |
| 50 | * here and branch to actual compiled object.<init> to handle any |
| 51 | * breakpoint/logging activites if either is active. |
| 52 | */ |
| 53 | } |
| 54 | |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 55 | // Return value helper for jobject return types |
| 56 | extern Object* DecodeJObjectInThread(Thread* thread, jobject obj) { |
Brian Carlstrom | 6f495f2 | 2011-10-10 15:05:03 -0700 | [diff] [blame] | 57 | if (thread->IsExceptionPending()) { |
| 58 | return NULL; |
| 59 | } |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 60 | return thread->DecodeJObject(obj); |
| 61 | } |
| 62 | |
| 63 | extern void* FindNativeMethod(Thread* thread) { |
| 64 | DCHECK(Thread::Current() == thread); |
| 65 | |
| 66 | Method* method = const_cast<Method*>(thread->GetCurrentMethod()); |
| 67 | DCHECK(method != NULL); |
| 68 | |
| 69 | // Lookup symbol address for method, on failure we'll return NULL with an |
| 70 | // exception set, otherwise we return the address of the method we found. |
| 71 | void* native_code = thread->GetJniEnv()->vm->FindCodeForNativeMethod(method); |
| 72 | if (native_code == NULL) { |
| 73 | DCHECK(thread->IsExceptionPending()); |
| 74 | return NULL; |
| 75 | } else { |
| 76 | // Register so that future calls don't come here |
| 77 | method->RegisterNative(native_code); |
| 78 | return native_code; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | // Called by generated call to throw an exception |
| 83 | extern "C" void artDeliverExceptionFromCode(Throwable* exception, Thread* thread, Method** sp) { |
| 84 | /* |
| 85 | * exception may be NULL, in which case this routine should |
| 86 | * throw NPE. NOTE: this is a convenience for generated code, |
| 87 | * which previously did the null check inline and constructed |
| 88 | * and threw a NPE if NULL. This routine responsible for setting |
| 89 | * exception_ in thread and delivering the exception. |
| 90 | */ |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 91 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 92 | if (exception == NULL) { |
| 93 | thread->ThrowNewException("Ljava/lang/NullPointerException;", "throw with null exception"); |
| 94 | } else { |
| 95 | thread->SetException(exception); |
| 96 | } |
| 97 | thread->DeliverException(); |
| 98 | } |
| 99 | |
| 100 | // Deliver an exception that's pending on thread helping set up a callee save frame on the way |
| 101 | extern "C" void artDeliverPendingExceptionFromCode(Thread* thread, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 102 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 103 | thread->DeliverException(); |
| 104 | } |
| 105 | |
| 106 | // Called by generated call to throw a NPE exception |
| 107 | extern "C" void artThrowNullPointerExceptionFromCode(Thread* thread, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 108 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 109 | thread->ThrowNewException("Ljava/lang/NullPointerException;", NULL); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 110 | thread->DeliverException(); |
| 111 | } |
| 112 | |
| 113 | // Called by generated call to throw an arithmetic divide by zero exception |
| 114 | extern "C" void artThrowDivZeroFromCode(Thread* thread, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 115 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 116 | thread->ThrowNewException("Ljava/lang/ArithmeticException;", "divide by zero"); |
| 117 | thread->DeliverException(); |
| 118 | } |
| 119 | |
| 120 | // Called by generated call to throw an arithmetic divide by zero exception |
| 121 | extern "C" void artThrowArrayBoundsFromCode(int index, int limit, Thread* thread, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 122 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| 123 | thread->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;", |
| 124 | "length=%d; index=%d", limit, index); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 125 | thread->DeliverException(); |
| 126 | } |
| 127 | |
| 128 | // Called by the AbstractMethodError stub (not runtime support) |
| 129 | extern void ThrowAbstractMethodErrorFromCode(Method* method, Thread* thread, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 130 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| 131 | thread->ThrowNewExceptionF("Ljava/lang/AbstractMethodError;", |
| 132 | "abstract method \"%s\"", PrettyMethod(method).c_str()); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 133 | thread->DeliverException(); |
| 134 | } |
| 135 | |
| 136 | extern "C" void artThrowStackOverflowFromCode(Method* method, Thread* thread, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 137 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 138 | thread->SetStackEndForStackOverflow(); // Allow space on the stack for constructor to execute |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 139 | thread->ThrowNewExceptionF("Ljava/lang/StackOverflowError;", |
| 140 | "stack size %zdkb; default stack size: %zdkb", |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 141 | thread->GetStackSize() / KB, Runtime::Current()->GetDefaultStackSize() / KB); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 142 | thread->ResetDefaultStackEnd(); // Return to default stack size |
| 143 | thread->DeliverException(); |
| 144 | } |
| 145 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 146 | static std::string ClassNameFromIndex(Method* method, uint32_t ref, |
| 147 | DexVerifier::VerifyErrorRefType ref_type, bool access) { |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 148 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 149 | const DexFile& dex_file = class_linker->FindDexFile(method->GetDeclaringClass()->GetDexCache()); |
| 150 | |
| 151 | uint16_t type_idx = 0; |
| 152 | if (ref_type == DexVerifier::VERIFY_ERROR_REF_FIELD) { |
| 153 | const DexFile::FieldId& id = dex_file.GetFieldId(ref); |
| 154 | type_idx = id.class_idx_; |
| 155 | } else if (ref_type == DexVerifier::VERIFY_ERROR_REF_METHOD) { |
| 156 | const DexFile::MethodId& id = dex_file.GetMethodId(ref); |
| 157 | type_idx = id.class_idx_; |
| 158 | } else if (ref_type == DexVerifier::VERIFY_ERROR_REF_CLASS) { |
| 159 | type_idx = ref; |
| 160 | } else { |
| 161 | CHECK(false) << static_cast<int>(ref_type); |
| 162 | } |
| 163 | |
| 164 | std::string class_name(PrettyDescriptor(dex_file.dexStringByTypeIdx(type_idx))); |
| 165 | if (!access) { |
| 166 | return class_name; |
| 167 | } |
| 168 | |
| 169 | std::string result; |
| 170 | result += "tried to access class "; |
| 171 | result += class_name; |
| 172 | result += " from class "; |
| 173 | result += PrettyDescriptor(method->GetDeclaringClass()->GetDescriptor()); |
| 174 | return result; |
| 175 | } |
| 176 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 177 | static std::string FieldNameFromIndex(const Method* method, uint32_t ref, |
| 178 | DexVerifier::VerifyErrorRefType ref_type, bool access) { |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 179 | CHECK_EQ(static_cast<int>(ref_type), static_cast<int>(DexVerifier::VERIFY_ERROR_REF_FIELD)); |
| 180 | |
| 181 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 182 | const DexFile& dex_file = class_linker->FindDexFile(method->GetDeclaringClass()->GetDexCache()); |
| 183 | |
| 184 | const DexFile::FieldId& id = dex_file.GetFieldId(ref); |
| 185 | std::string class_name(PrettyDescriptor(dex_file.dexStringByTypeIdx(id.class_idx_))); |
| 186 | const char* field_name = dex_file.dexStringById(id.name_idx_); |
| 187 | if (!access) { |
| 188 | return class_name + "." + field_name; |
| 189 | } |
| 190 | |
| 191 | std::string result; |
| 192 | result += "tried to access field "; |
| 193 | result += class_name + "." + field_name; |
| 194 | result += " from class "; |
| 195 | result += PrettyDescriptor(method->GetDeclaringClass()->GetDescriptor()); |
| 196 | return result; |
| 197 | } |
| 198 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 199 | static std::string MethodNameFromIndex(const Method* method, uint32_t ref, |
| 200 | DexVerifier::VerifyErrorRefType ref_type, bool access) { |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 201 | CHECK_EQ(static_cast<int>(ref_type), static_cast<int>(DexVerifier::VERIFY_ERROR_REF_METHOD)); |
| 202 | |
| 203 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 204 | const DexFile& dex_file = class_linker->FindDexFile(method->GetDeclaringClass()->GetDexCache()); |
| 205 | |
| 206 | const DexFile::MethodId& id = dex_file.GetMethodId(ref); |
| 207 | std::string class_name(PrettyDescriptor(dex_file.dexStringByTypeIdx(id.class_idx_))); |
| 208 | const char* method_name = dex_file.dexStringById(id.name_idx_); |
| 209 | if (!access) { |
| 210 | return class_name + "." + method_name; |
| 211 | } |
| 212 | |
| 213 | std::string result; |
| 214 | result += "tried to access method "; |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 215 | result += class_name + "." + method_name + ":" + |
| 216 | dex_file.CreateMethodDescriptor(id.proto_idx_, NULL); |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 217 | result += " from class "; |
| 218 | result += PrettyDescriptor(method->GetDeclaringClass()->GetDescriptor()); |
| 219 | return result; |
| 220 | } |
| 221 | |
| 222 | extern "C" void artThrowVerificationErrorFromCode(int32_t kind, int32_t ref, Thread* self, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 223 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kSaveAll); |
| 224 | Frame frame = self->GetTopOfStack(); // We need the calling method as context to interpret 'ref' |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 225 | frame.Next(); |
| 226 | Method* method = frame.GetMethod(); |
| 227 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 228 | DexVerifier::VerifyErrorRefType ref_type = |
| 229 | static_cast<DexVerifier::VerifyErrorRefType>(kind >> kVerifyErrorRefTypeShift); |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 230 | |
| 231 | const char* exception_class = "Ljava/lang/VerifyError;"; |
| 232 | std::string msg; |
| 233 | |
| 234 | switch (static_cast<DexVerifier::VerifyError>(kind & ~(0xff << kVerifyErrorRefTypeShift))) { |
| 235 | case DexVerifier::VERIFY_ERROR_NO_CLASS: |
| 236 | exception_class = "Ljava/lang/NoClassDefFoundError;"; |
| 237 | msg = ClassNameFromIndex(method, ref, ref_type, false); |
| 238 | break; |
| 239 | case DexVerifier::VERIFY_ERROR_NO_FIELD: |
| 240 | exception_class = "Ljava/lang/NoSuchFieldError;"; |
| 241 | msg = FieldNameFromIndex(method, ref, ref_type, false); |
| 242 | break; |
| 243 | case DexVerifier::VERIFY_ERROR_NO_METHOD: |
| 244 | exception_class = "Ljava/lang/NoSuchMethodError;"; |
| 245 | msg = MethodNameFromIndex(method, ref, ref_type, false); |
| 246 | break; |
| 247 | case DexVerifier::VERIFY_ERROR_ACCESS_CLASS: |
| 248 | exception_class = "Ljava/lang/IllegalAccessError;"; |
| 249 | msg = ClassNameFromIndex(method, ref, ref_type, true); |
| 250 | break; |
| 251 | case DexVerifier::VERIFY_ERROR_ACCESS_FIELD: |
| 252 | exception_class = "Ljava/lang/IllegalAccessError;"; |
| 253 | msg = FieldNameFromIndex(method, ref, ref_type, true); |
| 254 | break; |
| 255 | case DexVerifier::VERIFY_ERROR_ACCESS_METHOD: |
| 256 | exception_class = "Ljava/lang/IllegalAccessError;"; |
| 257 | msg = MethodNameFromIndex(method, ref, ref_type, true); |
| 258 | break; |
| 259 | case DexVerifier::VERIFY_ERROR_CLASS_CHANGE: |
| 260 | exception_class = "Ljava/lang/IncompatibleClassChangeError;"; |
| 261 | msg = ClassNameFromIndex(method, ref, ref_type, false); |
| 262 | break; |
| 263 | case DexVerifier::VERIFY_ERROR_INSTANTIATION: |
| 264 | exception_class = "Ljava/lang/InstantiationError;"; |
| 265 | msg = ClassNameFromIndex(method, ref, ref_type, false); |
| 266 | break; |
| 267 | case DexVerifier::VERIFY_ERROR_GENERIC: |
| 268 | // Generic VerifyError; use default exception, no message. |
| 269 | break; |
| 270 | case DexVerifier::VERIFY_ERROR_NONE: |
| 271 | CHECK(false); |
| 272 | break; |
| 273 | } |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 274 | self->ThrowNewException(exception_class, msg.c_str()); |
| 275 | self->DeliverException(); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | extern "C" void artThrowInternalErrorFromCode(int32_t errnum, Thread* thread, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 279 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 280 | LOG(WARNING) << "TODO: internal error detail message. errnum=" << errnum; |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 281 | thread->ThrowNewExceptionF("Ljava/lang/InternalError;", "errnum=%d", errnum); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 282 | thread->DeliverException(); |
| 283 | } |
| 284 | |
| 285 | extern "C" void artThrowRuntimeExceptionFromCode(int32_t errnum, Thread* thread, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 286 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 287 | LOG(WARNING) << "TODO: runtime exception detail message. errnum=" << errnum; |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 288 | thread->ThrowNewExceptionF("Ljava/lang/RuntimeException;", "errnum=%d", errnum); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 289 | thread->DeliverException(); |
| 290 | } |
| 291 | |
Elliott Hughes | e1410a2 | 2011-10-04 12:10:24 -0700 | [diff] [blame] | 292 | extern "C" void artThrowNoSuchMethodFromCode(int32_t method_idx, Thread* self, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 293 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kSaveAll); |
| 294 | Frame frame = self->GetTopOfStack(); // We need the calling method as context for the method_idx |
Elliott Hughes | e1410a2 | 2011-10-04 12:10:24 -0700 | [diff] [blame] | 295 | frame.Next(); |
| 296 | Method* method = frame.GetMethod(); |
Elliott Hughes | e1410a2 | 2011-10-04 12:10:24 -0700 | [diff] [blame] | 297 | self->ThrowNewException("Ljava/lang/NoSuchMethodError;", |
| 298 | MethodNameFromIndex(method, method_idx, DexVerifier::VERIFY_ERROR_REF_METHOD, false).c_str()); |
| 299 | self->DeliverException(); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | extern "C" void artThrowNegArraySizeFromCode(int32_t size, Thread* thread, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 303 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 304 | LOG(WARNING) << "UNTESTED artThrowNegArraySizeFromCode"; |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 305 | thread->ThrowNewExceptionF("Ljava/lang/NegativeArraySizeException;", "%d", size); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 306 | thread->DeliverException(); |
| 307 | } |
| 308 | |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 309 | void* UnresolvedDirectMethodTrampolineFromCode(int32_t method_idx, void* sp, Thread* thread, |
Ian Rogers | 1cb0a1d | 2011-10-06 15:24:35 -0700 | [diff] [blame] | 310 | Runtime::TrampolineType type) { |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 311 | // TODO: this code is specific to ARM |
| 312 | // On entry the stack pointed by sp is: |
| 313 | // | argN | | |
| 314 | // | ... | | |
| 315 | // | arg4 | | |
| 316 | // | arg3 spill | | Caller's frame |
| 317 | // | arg2 spill | | |
| 318 | // | arg1 spill | | |
| 319 | // | Method* | --- |
| 320 | // | LR | |
| 321 | // | R3 | arg3 |
| 322 | // | R2 | arg2 |
| 323 | // | R1 | arg1 |
| 324 | // | R0 | <- sp |
| 325 | uintptr_t* regs = reinterpret_cast<uintptr_t*>(sp); |
| 326 | Method** caller_sp = reinterpret_cast<Method**>(®s[5]); |
Ian Rogers | 1cb0a1d | 2011-10-06 15:24:35 -0700 | [diff] [blame] | 327 | uintptr_t caller_pc = regs[4]; |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 328 | // Record the last top of the managed stack |
Ian Rogers | 1cb0a1d | 2011-10-06 15:24:35 -0700 | [diff] [blame] | 329 | thread->SetTopOfStack(caller_sp, caller_pc); |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 330 | // Start new JNI local reference state |
| 331 | JNIEnvExt* env = thread->GetJniEnv(); |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 332 | ScopedJniEnvLocalRefState env_state(env); |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 333 | // Discover shorty (avoid GCs) |
Ian Rogers | 1cb0a1d | 2011-10-06 15:24:35 -0700 | [diff] [blame] | 334 | ClassLinker* linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 335 | const char* shorty = linker->MethodShorty(method_idx, *caller_sp); |
| 336 | size_t shorty_len = strlen(shorty); |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 337 | size_t args_in_regs = 0; |
| 338 | for (size_t i = 1; i < shorty_len; i++) { |
| 339 | char c = shorty[i]; |
| 340 | args_in_regs = args_in_regs + (c == 'J' || c == 'D' ? 2 : 1); |
| 341 | if (args_in_regs > 3) { |
| 342 | args_in_regs = 3; |
| 343 | break; |
| 344 | } |
| 345 | } |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 346 | bool is_static; |
Ian Rogers | 1cb0a1d | 2011-10-06 15:24:35 -0700 | [diff] [blame] | 347 | if (type == Runtime::kUnknownMethod) { |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 348 | Method* caller = *caller_sp; |
Ian Rogers | df9a782 | 2011-10-11 16:53:22 -0700 | [diff] [blame] | 349 | // less two as return address may span into next dex instruction |
| 350 | uint32_t dex_pc = caller->ToDexPC(caller_pc - 2); |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 351 | const DexFile& dex_file = Runtime::Current()->GetClassLinker() |
| 352 | ->FindDexFile(caller->GetDeclaringClass()->GetDexCache()); |
| 353 | const DexFile::CodeItem* code = dex_file.GetCodeItem(caller->GetCodeItemOffset()); |
| 354 | CHECK_LT(dex_pc, code->insns_size_); |
| 355 | const Instruction* instr = Instruction::At(reinterpret_cast<const byte*>(&code->insns_[dex_pc])); |
| 356 | Instruction::Code instr_code = instr->Opcode(); |
| 357 | is_static = (instr_code == Instruction::INVOKE_STATIC) || |
| 358 | (instr_code == Instruction::INVOKE_STATIC_RANGE); |
| 359 | DCHECK(is_static || (instr_code == Instruction::INVOKE_DIRECT) || |
| 360 | (instr_code == Instruction::INVOKE_DIRECT_RANGE)); |
Ian Rogers | 1cb0a1d | 2011-10-06 15:24:35 -0700 | [diff] [blame] | 361 | } else { |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 362 | is_static = type == Runtime::kStaticMethod; |
| 363 | } |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 364 | // Place into local references incoming arguments from the caller's register arguments |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 365 | size_t cur_arg = 1; // skip method_idx in R0, first arg is in R1 |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 366 | if (!is_static) { |
| 367 | Object* obj = reinterpret_cast<Object*>(regs[cur_arg]); |
| 368 | cur_arg++; |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 369 | if (args_in_regs < 3) { |
| 370 | // If we thought we had fewer than 3 arguments in registers, account for the receiver |
| 371 | args_in_regs++; |
| 372 | } |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 373 | AddLocalReference<jobject>(env, obj); |
| 374 | } |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 375 | size_t shorty_index = 1; // skip return value |
| 376 | // Iterate while arguments and arguments in registers (less 1 from cur_arg which is offset to skip |
| 377 | // R0) |
| 378 | while ((cur_arg - 1) < args_in_regs && shorty_index < shorty_len) { |
| 379 | char c = shorty[shorty_index]; |
| 380 | shorty_index++; |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 381 | if (c == 'L') { |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 382 | Object* obj = reinterpret_cast<Object*>(regs[cur_arg]); |
| 383 | AddLocalReference<jobject>(env, obj); |
| 384 | } |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 385 | cur_arg = cur_arg + (c == 'J' || c == 'D' ? 2 : 1); |
| 386 | } |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 387 | // Place into local references incoming arguments from the caller's stack arguments |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 388 | cur_arg += 5; // skip LR, Method* and spills for R1 to R3 |
| 389 | while (shorty_index < shorty_len) { |
| 390 | char c = shorty[shorty_index]; |
| 391 | shorty_index++; |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 392 | if (c == 'L') { |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 393 | Object* obj = reinterpret_cast<Object*>(regs[cur_arg]); |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 394 | AddLocalReference<jobject>(env, obj); |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 395 | } |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 396 | cur_arg = cur_arg + (c == 'J' || c == 'D' ? 2 : 1); |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 397 | } |
| 398 | // Resolve method filling in dex cache |
| 399 | Method* called = linker->ResolveMethod(method_idx, *caller_sp, true); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 400 | if (LIKELY(!thread->IsExceptionPending())) { |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 401 | // We got this far, ensure that the declaring class is initialized |
| 402 | linker->EnsureInitialized(called->GetDeclaringClass(), true); |
| 403 | } |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 404 | void* code; |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 405 | if (UNLIKELY(thread->IsExceptionPending())) { |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 406 | // Something went wrong, go into deliver exception with the pending exception in r0 |
| 407 | code = reinterpret_cast<void*>(art_deliver_exception_from_code); |
| 408 | regs[0] = reinterpret_cast<uintptr_t>(thread->GetException()); |
| 409 | thread->ClearException(); |
| 410 | } else { |
| 411 | // Expect class to at least be initializing |
| 412 | CHECK(called->GetDeclaringClass()->IsInitializing()); |
| 413 | // Set up entry into main method |
| 414 | regs[0] = reinterpret_cast<uintptr_t>(called); |
| 415 | code = const_cast<void*>(called->GetCode()); |
| 416 | } |
| 417 | return code; |
| 418 | } |
| 419 | |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 420 | // TODO: placeholder. Helper function to type |
| 421 | Class* InitializeTypeFromCode(uint32_t type_idx, Method* method) { |
| 422 | /* |
| 423 | * Should initialize & fix up method->dex_cache_resolved_types_[]. |
| 424 | * Returns initialized type. Does not return normally if an exception |
| 425 | * is thrown, but instead initiates the catch. Should be similar to |
| 426 | * ClassLinker::InitializeStaticStorageFromCode. |
| 427 | */ |
| 428 | UNIMPLEMENTED(FATAL); |
| 429 | return NULL; |
| 430 | } |
| 431 | |
| 432 | // TODO: placeholder. Helper function to resolve virtual method |
| 433 | void ResolveMethodFromCode(Method* method, uint32_t method_idx) { |
| 434 | /* |
| 435 | * Slow-path handler on invoke virtual method path in which |
| 436 | * base method is unresolved at compile-time. Doesn't need to |
| 437 | * return anything - just either ensure that |
| 438 | * method->dex_cache_resolved_methods_(method_idx) != NULL or |
| 439 | * throw and unwind. The caller will restart call sequence |
| 440 | * from the beginning. |
| 441 | */ |
| 442 | } |
| 443 | |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 444 | // Fast path field resolution that can't throw exceptions |
| 445 | static Field* FindFieldFast(uint32_t field_idx, const Method* referrer) { |
| 446 | Field* resolved_field = referrer->GetDexCacheResolvedFields()->Get(field_idx); |
| 447 | if (UNLIKELY(resolved_field == NULL)) { |
| 448 | return NULL; |
| 449 | } |
| 450 | Class* fields_class = resolved_field->GetDeclaringClass(); |
| 451 | // Check class is initilaized or initializing |
| 452 | if (UNLIKELY(!fields_class->IsInitializing())) { |
| 453 | return NULL; |
| 454 | } |
| 455 | return resolved_field; |
| 456 | } |
| 457 | |
| 458 | // Slow path field resolution and declaring class initialization |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 459 | Field* FindFieldFromCode(uint32_t field_idx, const Method* referrer, bool is_static) { |
| 460 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 461 | Field* resolved_field = class_linker->ResolveField(field_idx, referrer, is_static); |
| 462 | if (LIKELY(resolved_field != NULL)) { |
| 463 | Class* fields_class = resolved_field->GetDeclaringClass(); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 464 | // If the class is already initializing, we must be inside <clinit>, or |
| 465 | // we'd still be waiting for the lock. |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 466 | if (fields_class->IsInitializing()) { |
| 467 | return resolved_field; |
| 468 | } |
| 469 | if(Runtime::Current()->GetClassLinker()->EnsureInitialized(fields_class, true)) { |
| 470 | return resolved_field; |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 471 | } |
| 472 | } |
| 473 | DCHECK(Thread::Current()->IsExceptionPending()); // Throw exception and unwind |
| 474 | return NULL; |
| 475 | } |
| 476 | |
| 477 | extern "C" Field* artFindInstanceFieldFromCode(uint32_t field_idx, const Method* referrer, |
| 478 | Thread* self, Method** sp) { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 479 | Field* resolved_field = FindFieldFast(field_idx, referrer); |
| 480 | if (UNLIKELY(resolved_field == NULL)) { |
| 481 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| 482 | resolved_field = FindFieldFromCode(field_idx, referrer, false); |
| 483 | } |
| 484 | return resolved_field; |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 485 | } |
| 486 | |
| 487 | extern "C" uint32_t artGet32StaticFromCode(uint32_t field_idx, const Method* referrer, |
| 488 | Thread* self, Method** sp) { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 489 | Field* field = FindFieldFast(field_idx, referrer); |
| 490 | if (LIKELY(field != NULL)) { |
| 491 | Class* type = field->GetType(); |
| 492 | if (LIKELY(type->IsPrimitive() && type->PrimitiveSize() == sizeof(int32_t))) { |
| 493 | return field->Get32(NULL); |
| 494 | } |
| 495 | } |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 496 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 497 | field = FindFieldFromCode(field_idx, referrer, true); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 498 | if (field != NULL) { |
| 499 | Class* type = field->GetType(); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 500 | if (!type->IsPrimitive() || type->PrimitiveSize() != sizeof(int32_t)) { |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 501 | self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| 502 | "Attempted read of 32-bit primitive on field '%s'", |
| 503 | PrettyField(field, true).c_str()); |
| 504 | } else { |
| 505 | return field->Get32(NULL); |
| 506 | } |
| 507 | } |
| 508 | return 0; // Will throw exception by checking with Thread::Current |
| 509 | } |
| 510 | |
| 511 | extern "C" uint64_t artGet64StaticFromCode(uint32_t field_idx, const Method* referrer, |
| 512 | Thread* self, Method** sp) { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 513 | Field* field = FindFieldFast(field_idx, referrer); |
| 514 | if (LIKELY(field != NULL)) { |
| 515 | Class* type = field->GetType(); |
| 516 | if (LIKELY(type->IsPrimitive() && type->PrimitiveSize() == sizeof(int64_t))) { |
| 517 | return field->Get64(NULL); |
| 518 | } |
| 519 | } |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 520 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 521 | field = FindFieldFromCode(field_idx, referrer, true); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 522 | if (field != NULL) { |
| 523 | Class* type = field->GetType(); |
| 524 | if (!type->IsPrimitive() || type->PrimitiveSize() != sizeof(int64_t)) { |
| 525 | self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| 526 | "Attempted read of 64-bit primitive on field '%s'", |
| 527 | PrettyField(field, true).c_str()); |
| 528 | } else { |
| 529 | return field->Get64(NULL); |
| 530 | } |
| 531 | } |
| 532 | return 0; // Will throw exception by checking with Thread::Current |
| 533 | } |
| 534 | |
| 535 | extern "C" Object* artGetObjStaticFromCode(uint32_t field_idx, const Method* referrer, |
| 536 | Thread* self, Method** sp) { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 537 | Field* field = FindFieldFast(field_idx, referrer); |
| 538 | if (LIKELY(field != NULL)) { |
| 539 | Class* type = field->GetType(); |
| 540 | if (LIKELY(!type->IsPrimitive())) { |
| 541 | return field->GetObj(NULL); |
| 542 | } |
| 543 | } |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 544 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 545 | field = FindFieldFromCode(field_idx, referrer, true); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 546 | if (field != NULL) { |
| 547 | Class* type = field->GetType(); |
| 548 | if (type->IsPrimitive()) { |
| 549 | self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| 550 | "Attempted read of reference on primitive field '%s'", |
| 551 | PrettyField(field, true).c_str()); |
| 552 | } else { |
| 553 | return field->GetObj(NULL); |
| 554 | } |
| 555 | } |
| 556 | return NULL; // Will throw exception by checking with Thread::Current |
| 557 | } |
| 558 | |
| 559 | extern "C" int artSet32StaticFromCode(uint32_t field_idx, const Method* referrer, |
| 560 | uint32_t new_value, Thread* self, Method** sp) { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 561 | Field* field = FindFieldFast(field_idx, referrer); |
| 562 | if (LIKELY(field != NULL)) { |
| 563 | Class* type = field->GetType(); |
| 564 | if (LIKELY(type->IsPrimitive() && type->PrimitiveSize() == sizeof(int32_t))) { |
| 565 | field->Set32(NULL, new_value); |
| 566 | return 0; // success |
| 567 | } |
| 568 | } |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 569 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 570 | field = FindFieldFromCode(field_idx, referrer, true); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 571 | if (field != NULL) { |
| 572 | Class* type = field->GetType(); |
| 573 | if (!type->IsPrimitive() || type->PrimitiveSize() != sizeof(int32_t)) { |
| 574 | self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| 575 | "Attempted write of 32-bit primitive to field '%s'", |
| 576 | PrettyField(field, true).c_str()); |
| 577 | } else { |
| 578 | field->Set32(NULL, new_value); |
| 579 | return 0; // success |
| 580 | } |
| 581 | } |
| 582 | return -1; // failure |
| 583 | } |
| 584 | |
| 585 | extern "C" int artSet64StaticFromCode(uint32_t field_idx, const Method* referrer, |
| 586 | uint64_t new_value, Thread* self, Method** sp) { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 587 | Field* field = FindFieldFast(field_idx, referrer); |
| 588 | if (LIKELY(field != NULL)) { |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 589 | Class* type = field->GetType(); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 590 | if (LIKELY(type->IsPrimitive() && type->PrimitiveSize() == sizeof(int64_t))) { |
| 591 | field->Set64(NULL, new_value); |
| 592 | return 0; // success |
| 593 | } |
| 594 | } |
| 595 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| 596 | field = FindFieldFromCode(field_idx, referrer, true); |
| 597 | if (LIKELY(field != NULL)) { |
| 598 | Class* type = field->GetType(); |
| 599 | if (UNLIKELY(!type->IsPrimitive() || type->PrimitiveSize() != sizeof(int64_t))) { |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 600 | self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| 601 | "Attempted write of 64-bit primitive to field '%s'", |
| 602 | PrettyField(field, true).c_str()); |
| 603 | } else { |
| 604 | field->Set64(NULL, new_value); |
| 605 | return 0; // success |
| 606 | } |
| 607 | } |
| 608 | return -1; // failure |
| 609 | } |
| 610 | |
| 611 | extern "C" int artSetObjStaticFromCode(uint32_t field_idx, const Method* referrer, |
| 612 | Object* new_value, Thread* self, Method** sp) { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 613 | Field* field = FindFieldFast(field_idx, referrer); |
| 614 | if (LIKELY(field != NULL)) { |
| 615 | Class* type = field->GetType(); |
| 616 | if (LIKELY(!type->IsPrimitive())) { |
| 617 | field->SetObj(NULL, new_value); |
| 618 | return 0; // success |
| 619 | } |
| 620 | } |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 621 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 622 | field = FindFieldFromCode(field_idx, referrer, true); |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 623 | if (field != NULL) { |
| 624 | Class* type = field->GetType(); |
| 625 | if (type->IsPrimitive()) { |
| 626 | self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| 627 | "Attempted write of reference to primitive field '%s'", |
| 628 | PrettyField(field, true).c_str()); |
| 629 | } else { |
| 630 | field->SetObj(NULL, new_value); |
| 631 | return 0; // success |
| 632 | } |
| 633 | } |
| 634 | return -1; // failure |
| 635 | } |
| 636 | |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 637 | // Given the context of a calling Method, use its DexCache to resolve a type to a Class. If it |
| 638 | // cannot be resolved, throw an error. If it can, use it to create an instance. |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 639 | extern "C" Object* artAllocObjectFromCode(uint32_t type_idx, Method* method, |
| 640 | Thread* self, Method** sp) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 641 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 642 | Class* klass = method->GetDexCacheResolvedTypes()->Get(type_idx); |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 643 | Runtime* runtime = Runtime::Current(); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 644 | if (UNLIKELY(klass == NULL)) { |
buzbee | 33a129c | 2011-10-06 16:53:20 -0700 | [diff] [blame] | 645 | klass = runtime->GetClassLinker()->ResolveType(type_idx, method); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 646 | if (klass == NULL) { |
buzbee | 33a129c | 2011-10-06 16:53:20 -0700 | [diff] [blame] | 647 | DCHECK(self->IsExceptionPending()); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 648 | return NULL; // Failure |
| 649 | } |
| 650 | } |
buzbee | 33a129c | 2011-10-06 16:53:20 -0700 | [diff] [blame] | 651 | if (!runtime->GetClassLinker()->EnsureInitialized(klass, true)) { |
| 652 | DCHECK(self->IsExceptionPending()); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 653 | return NULL; // Failure |
| 654 | } |
| 655 | return klass->AllocObject(); |
| 656 | } |
| 657 | |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 658 | Array* CheckAndAllocArrayFromCode(uint32_t type_idx, Method* method, int32_t component_count, |
| 659 | Thread* self) { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 660 | if (UNLIKELY(component_count < 0)) { |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 661 | self->ThrowNewExceptionF("Ljava/lang/NegativeArraySizeException;", "%d", component_count); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 662 | return NULL; // Failure |
| 663 | } |
| 664 | Class* klass = method->GetDexCacheResolvedTypes()->Get(type_idx); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 665 | if (UNLIKELY(klass == NULL)) { // Not in dex cache so try to resolve |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 666 | klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); |
| 667 | if (klass == NULL) { // Error |
| 668 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 669 | return NULL; // Failure |
| 670 | } |
| 671 | } |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 672 | if (UNLIKELY(klass->IsPrimitive() && !klass->IsPrimitiveInt())) { |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 673 | if (klass->IsPrimitiveLong() || klass->IsPrimitiveDouble()) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 674 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/RuntimeException;", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 675 | "Bad filled array request for type %s", |
| 676 | PrettyDescriptor(klass->GetDescriptor()).c_str()); |
| 677 | } else { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 678 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/InternalError;", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 679 | "Found type %s; filled-new-array not implemented for anything but \'int\'", |
| 680 | PrettyDescriptor(klass->GetDescriptor()).c_str()); |
| 681 | } |
| 682 | return NULL; // Failure |
| 683 | } else { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 684 | DCHECK(klass->IsArrayClass()) << PrettyClass(klass); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 685 | return Array::Alloc(klass, component_count); |
| 686 | } |
| 687 | } |
| 688 | |
Ian Rogers | ce9eca6 | 2011-10-07 17:11:03 -0700 | [diff] [blame] | 689 | // Helper function to alloc array for OP_FILLED_NEW_ARRAY |
| 690 | extern "C" Array* artCheckAndAllocArrayFromCode(uint32_t type_idx, Method* method, |
| 691 | int32_t component_count, Thread* self, Method** sp) { |
| 692 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| 693 | return CheckAndAllocArrayFromCode(type_idx, method, component_count, self); |
| 694 | } |
| 695 | |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 696 | // Given the context of a calling Method, use its DexCache to resolve a type to an array Class. If |
| 697 | // it cannot be resolved, throw an error. If it can, use it to create an array. |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 698 | extern "C" Array* artAllocArrayFromCode(uint32_t type_idx, Method* method, int32_t component_count, |
| 699 | Thread* self, Method** sp) { |
| 700 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 701 | if (UNLIKELY(component_count < 0)) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 702 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/NegativeArraySizeException;", "%d", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 703 | component_count); |
| 704 | return NULL; // Failure |
| 705 | } |
| 706 | Class* klass = method->GetDexCacheResolvedTypes()->Get(type_idx); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 707 | if (UNLIKELY(klass == NULL)) { // Not in dex cache so try to resolve |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 708 | klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); |
| 709 | if (klass == NULL) { // Error |
| 710 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 711 | return NULL; // Failure |
| 712 | } |
| 713 | CHECK(klass->IsArrayClass()) << PrettyClass(klass); |
| 714 | } |
| 715 | return Array::Alloc(klass, component_count); |
| 716 | } |
| 717 | |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 718 | // Assignable test for code, won't throw. Null and equality tests already performed |
| 719 | uint32_t IsAssignableFromCode(const Class* klass, const Class* ref_class) { |
| 720 | DCHECK(klass != NULL); |
| 721 | DCHECK(ref_class != NULL); |
| 722 | return klass->IsAssignableFrom(ref_class) ? 1 : 0; |
| 723 | } |
| 724 | |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 725 | // Check whether it is safe to cast one class to the other, throw exception and return -1 on failure |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 726 | extern "C" int artCheckCastFromCode(const Class* a, const Class* b, Thread* self, Method** sp) { |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 727 | DCHECK(a->IsClass()) << PrettyClass(a); |
| 728 | DCHECK(b->IsClass()) << PrettyClass(b); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 729 | if (LIKELY(b->IsAssignableFrom(a))) { |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 730 | return 0; // Success |
| 731 | } else { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 732 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 733 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/ClassCastException;", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 734 | "%s cannot be cast to %s", |
| 735 | PrettyDescriptor(a->GetDescriptor()).c_str(), |
| 736 | PrettyDescriptor(b->GetDescriptor()).c_str()); |
| 737 | return -1; // Failure |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | // Tests whether 'element' can be assigned into an array of type 'array_class'. |
| 742 | // Returns 0 on success and -1 if an exception is pending. |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 743 | extern "C" int artCanPutArrayElementFromCode(const Object* element, const Class* array_class, |
| 744 | Thread* self, Method** sp) { |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 745 | DCHECK(array_class != NULL); |
| 746 | // element can't be NULL as we catch this is screened in runtime_support |
| 747 | Class* element_class = element->GetClass(); |
| 748 | Class* component_type = array_class->GetComponentType(); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 749 | if (LIKELY(component_type->IsAssignableFrom(element_class))) { |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 750 | return 0; // Success |
| 751 | } else { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 752 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 753 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/ArrayStoreException;", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 754 | "Cannot store an object of type %s in to an array of type %s", |
| 755 | PrettyDescriptor(element_class->GetDescriptor()).c_str(), |
| 756 | PrettyDescriptor(array_class->GetDescriptor()).c_str()); |
| 757 | return -1; // Failure |
| 758 | } |
| 759 | } |
| 760 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 761 | Class* InitializeStaticStorage(uint32_t type_idx, const Method* referrer, Thread* self) { |
| 762 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 763 | Class* klass = class_linker->ResolveType(type_idx, referrer); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 764 | if (UNLIKELY(klass == NULL)) { |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 765 | CHECK(self->IsExceptionPending()); |
| 766 | return NULL; // Failure - Indicate to caller to deliver exception |
| 767 | } |
| 768 | // If we are the <clinit> of this class, just return our storage. |
| 769 | // |
| 770 | // Do not set the DexCache InitializedStaticStorage, since that implies <clinit> has finished |
| 771 | // running. |
| 772 | if (klass == referrer->GetDeclaringClass() && referrer->IsClassInitializer()) { |
| 773 | return klass; |
| 774 | } |
| 775 | if (!class_linker->EnsureInitialized(klass, true)) { |
| 776 | CHECK(self->IsExceptionPending()); |
| 777 | return NULL; // Failure - Indicate to caller to deliver exception |
| 778 | } |
| 779 | referrer->GetDexCacheInitializedStaticStorage()->Set(type_idx, klass); |
| 780 | return klass; |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 781 | } |
| 782 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 783 | extern "C" Class* artInitializeStaticStorageFromCode(uint32_t type_idx, const Method* referrer, |
| 784 | Thread* self, Method** sp) { |
| 785 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| 786 | return InitializeStaticStorage(type_idx, referrer, self); |
| 787 | } |
| 788 | |
Brian Carlstrom | aded5f7 | 2011-10-07 17:15:04 -0700 | [diff] [blame] | 789 | String* ResolveStringFromCode(const Method* referrer, uint32_t string_idx) { |
| 790 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 791 | return class_linker->ResolveString(string_idx, referrer); |
| 792 | } |
| 793 | |
| 794 | extern "C" String* artResolveStringFromCode(Method* referrer, int32_t string_idx, |
| 795 | Thread* self, Method** sp) { |
| 796 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| 797 | return ResolveStringFromCode(referrer, string_idx); |
| 798 | } |
| 799 | |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 800 | extern "C" int artUnlockObjectFromCode(Object* obj, Thread* self, Method** sp) { |
| 801 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 802 | DCHECK(obj != NULL); // Assumed to have been checked before entry |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 803 | // MonitorExit may throw exception |
| 804 | return obj->MonitorExit(self) ? 0 /* Success */ : -1 /* Failure */; |
| 805 | } |
| 806 | |
| 807 | extern "C" void artLockObjectFromCode(Object* obj, Thread* thread, Method** sp) { |
| 808 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kRefsOnly); |
| 809 | DCHECK(obj != NULL); // Assumed to have been checked before entry |
| 810 | obj->MonitorEnter(thread); // May block |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 811 | DCHECK(thread->HoldsLock(obj)); |
| 812 | // Only possible exception is NPE and is handled before entry |
| 813 | DCHECK(!thread->IsExceptionPending()); |
| 814 | } |
| 815 | |
Ian Rogers | 4a510d8 | 2011-10-09 14:30:24 -0700 | [diff] [blame] | 816 | void CheckSuspendFromCode(Thread* thread) { |
| 817 | // Called when thread->suspend_count_ != 0 |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 818 | Runtime::Current()->GetThreadList()->FullSuspendCheck(thread); |
| 819 | } |
| 820 | |
Ian Rogers | 4a510d8 | 2011-10-09 14:30:24 -0700 | [diff] [blame] | 821 | extern "C" void artTestSuspendFromCode(Thread* thread, Method** sp) { |
| 822 | // Called when suspend count check value is 0 and thread->suspend_count_ != 0 |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 823 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kRefsOnly); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 824 | Runtime::Current()->GetThreadList()->FullSuspendCheck(thread); |
| 825 | } |
| 826 | |
| 827 | /* |
| 828 | * Fill the array with predefined constant values, throwing exceptions if the array is null or |
| 829 | * not of sufficient length. |
| 830 | * |
| 831 | * NOTE: When dealing with a raw dex file, the data to be copied uses |
| 832 | * little-endian ordering. Require that oat2dex do any required swapping |
| 833 | * so this routine can get by with a memcpy(). |
| 834 | * |
| 835 | * Format of the data: |
| 836 | * ushort ident = 0x0300 magic value |
| 837 | * ushort width width of each element in the table |
| 838 | * uint size number of elements in the table |
| 839 | * ubyte data[size*width] table of data values (may contain a single-byte |
| 840 | * padding at the end) |
| 841 | */ |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 842 | extern "C" int artHandleFillArrayDataFromCode(Array* array, const uint16_t* table, |
| 843 | Thread* self, Method** sp) { |
| 844 | FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 845 | DCHECK_EQ(table[0], 0x0300); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 846 | if (UNLIKELY(array == NULL)) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 847 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/NullPointerException;", |
| 848 | "null array in fill array"); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 849 | return -1; // Error |
| 850 | } |
| 851 | DCHECK(array->IsArrayInstance() && !array->IsObjectArray()); |
| 852 | uint32_t size = (uint32_t)table[2] | (((uint32_t)table[3]) << 16); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 853 | if (UNLIKELY(static_cast<int32_t>(size) > array->GetLength())) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 854 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;", |
| 855 | "failed array fill. length=%d; index=%d", array->GetLength(), size); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 856 | return -1; // Error |
| 857 | } |
| 858 | uint16_t width = table[1]; |
| 859 | uint32_t size_in_bytes = size * width; |
| 860 | memcpy((char*)array + Array::DataOffset().Int32Value(), (char*)&table[4], size_in_bytes); |
| 861 | return 0; // Success |
| 862 | } |
| 863 | |
| 864 | // See comments in runtime_support_asm.S |
| 865 | extern "C" uint64_t artFindInterfaceMethodInCacheFromCode(uint32_t method_idx, |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 866 | Object* this_object, |
| 867 | Method* caller_method, |
Ian Rogers | 4f0d07c | 2011-10-06 23:38:47 -0700 | [diff] [blame] | 868 | Thread* thread, Method** sp) { |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 869 | Method* interface_method = caller_method->GetDexCacheResolvedMethods()->Get(method_idx); |
| 870 | Method* found_method = NULL; // The found method |
| 871 | if (LIKELY(interface_method != NULL && this_object != NULL)) { |
| 872 | found_method = this_object->GetClass()->FindVirtualMethodForInterface(interface_method); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 873 | } |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 874 | if (UNLIKELY(found_method == NULL)) { |
| 875 | FinishCalleeSaveFrameSetup(thread, sp, Runtime::kRefsAndArgs); |
| 876 | if (this_object == NULL) { |
| 877 | thread->ThrowNewExceptionF("Ljava/lang/NullPointerException;", |
| 878 | "null receiver during interface dispatch"); |
| 879 | return 0; |
| 880 | } |
| 881 | if (interface_method == NULL) { |
| 882 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 883 | interface_method = class_linker->ResolveMethod(method_idx, caller_method, false); |
| 884 | if (interface_method == NULL) { |
| 885 | // Could not resolve interface method. Throw error and unwind |
| 886 | CHECK(thread->IsExceptionPending()); |
| 887 | return 0; |
| 888 | } |
| 889 | } |
| 890 | found_method = this_object->GetClass()->FindVirtualMethodForInterface(interface_method); |
| 891 | if (found_method == NULL) { |
| 892 | CHECK(thread->IsExceptionPending()); |
| 893 | return 0; |
| 894 | } |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 895 | } |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 896 | const void* code = found_method->GetCode(); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 897 | |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 898 | uint32_t method_uint = reinterpret_cast<uint32_t>(found_method); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 899 | uint64_t code_uint = reinterpret_cast<uint32_t>(code); |
| 900 | uint64_t result = ((code_uint << 32) | method_uint); |
| 901 | return result; |
| 902 | } |
| 903 | |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 904 | // Handler for invocation on proxy methods. On entry a frame will exist for the proxy object method |
| 905 | // which is responsible for recording callee save registers. We explicitly handlerize incoming |
| 906 | // reference arguments (so they survive GC) and create a boxed argument array. Finally we invoke |
| 907 | // the invocation handler which is a field within the proxy object receiver. |
| 908 | extern "C" void artProxyInvokeHandler(Method* proxy_method, Object* receiver, |
| 909 | byte* stack_args, Thread* self) { |
| 910 | // Register the top of the managed stack |
| 911 | self->SetTopOfStack(reinterpret_cast<Method**>(stack_args + 8), 0); |
| 912 | // TODO: ARM specific |
| 913 | DCHECK_EQ(proxy_method->GetFrameSizeInBytes(), 48u); |
| 914 | // Start new JNI local reference state |
| 915 | JNIEnvExt* env = self->GetJniEnv(); |
| 916 | ScopedJniEnvLocalRefState env_state(env); |
| 917 | // Create local ref. copies of proxy method and the receiver |
| 918 | jobject rcvr_jobj = AddLocalReference<jobject>(env, receiver); |
| 919 | jobject proxy_method_jobj = AddLocalReference<jobject>(env, proxy_method); |
| 920 | |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 921 | // Placing into local references incoming arguments from the caller's register arguments, |
| 922 | // replacing original Object* with jobject |
| 923 | const size_t num_params = proxy_method->NumArgs(); |
| 924 | size_t args_in_regs = 0; |
| 925 | for (size_t i = 1; i < num_params; i++) { // skip receiver |
| 926 | args_in_regs = args_in_regs + (proxy_method->IsParamALongOrDouble(i) ? 2 : 1); |
| 927 | if (args_in_regs > 2) { |
| 928 | args_in_regs = 2; |
| 929 | break; |
| 930 | } |
| 931 | } |
| 932 | size_t cur_arg = 0; // current stack location to read |
| 933 | size_t param_index = 1; // skip receiver |
| 934 | while (cur_arg < args_in_regs && param_index < num_params) { |
| 935 | if (proxy_method->IsParamAReference(param_index)) { |
| 936 | Object* obj = *reinterpret_cast<Object**>(stack_args + (cur_arg * kPointerSize)); |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 937 | jobject jobj = AddLocalReference<jobject>(env, obj); |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 938 | *reinterpret_cast<jobject*>(stack_args + (cur_arg * kPointerSize)) = jobj; |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 939 | } |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 940 | cur_arg = cur_arg + (proxy_method->IsParamALongOrDouble(param_index) ? 2 : 1); |
| 941 | param_index++; |
| 942 | } |
| 943 | // Placing into local references incoming arguments from the caller's stack arguments |
| 944 | cur_arg += 5; // skip LR, Method* and spills for R1 to R3 |
| 945 | while (param_index < num_params) { |
| 946 | if (proxy_method->IsParamAReference(param_index)) { |
| 947 | Object* obj = *reinterpret_cast<Object**>(stack_args + (cur_arg * kPointerSize)); |
| 948 | jobject jobj = AddLocalReference<jobject>(env, obj); |
| 949 | *reinterpret_cast<jobject*>(stack_args + (cur_arg * kPointerSize)) = jobj; |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 950 | } |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 951 | cur_arg = cur_arg + (proxy_method->IsParamALongOrDouble(param_index) ? 2 : 1); |
| 952 | param_index++; |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 953 | } |
| 954 | // Create args array |
| 955 | ObjectArray<Object>* args = |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 956 | Runtime::Current()->GetClassLinker()->AllocObjectArray<Object>(num_params - 1); |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 957 | if(args == NULL) { |
| 958 | CHECK(self->IsExceptionPending()); |
| 959 | return; |
| 960 | } |
| 961 | // Set up arguments array and place in local IRT during boxing (which may allocate/GC) |
| 962 | jvalue args_jobj[3]; |
| 963 | args_jobj[0].l = rcvr_jobj; |
| 964 | args_jobj[1].l = proxy_method_jobj; |
| 965 | args_jobj[2].l = AddLocalReference<jobjectArray>(env, args); |
| 966 | // Box arguments |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 967 | cur_arg = 0; // reset stack location to read to start |
| 968 | // reset index, will index into param type array which doesn't include the receiver |
| 969 | param_index = 0; |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 970 | ObjectArray<Class>* param_types = proxy_method->GetJavaParameterTypes(); |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 971 | CHECK(param_types != NULL); |
| 972 | // Check number of parameter types agrees with number from the Method - less 1 for the receiver. |
| 973 | CHECK_EQ(static_cast<size_t>(param_types->GetLength()), num_params - 1); |
| 974 | while (cur_arg < args_in_regs && param_index < (num_params - 1)) { |
| 975 | Class* param_type = param_types->Get(param_index); |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 976 | Object* obj; |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 977 | if (!param_type->IsPrimitive()) { |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 978 | obj = self->DecodeJObject(*reinterpret_cast<jobject*>(stack_args + (cur_arg * kPointerSize))); |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 979 | } else { |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 980 | JValue val = *reinterpret_cast<JValue*>(stack_args + (cur_arg * kPointerSize)); |
| 981 | if (cur_arg == 1 && (param_type->IsPrimitiveLong() || param_type->IsPrimitiveDouble())) { |
| 982 | // long/double split over regs and stack, mask in high half from stack arguments |
| 983 | // (7 = 2 reg args + LR + Method* + 3 arg reg spill slots) |
| 984 | uint64_t high_half = *reinterpret_cast<uint32_t*>(stack_args + (7 * kPointerSize)); |
Ian Rogers | caab8c4 | 2011-10-12 12:11:18 -0700 | [diff] [blame^] | 985 | val.j = (val.j & 0xffffffffULL) | (high_half << 32); |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 986 | } |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 987 | BoxPrimitive(env, param_type, val); |
| 988 | if (self->IsExceptionPending()) { |
| 989 | return; |
| 990 | } |
| 991 | obj = val.l; |
| 992 | } |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 993 | args->Set(param_index, obj); |
| 994 | cur_arg = cur_arg + (param_type->IsPrimitiveLong() || param_type->IsPrimitiveDouble() ? 2 : 1); |
| 995 | param_index++; |
| 996 | } |
| 997 | // Placing into local references incoming arguments from the caller's stack arguments |
| 998 | cur_arg += 5; // skip LR, Method* and spills for R1 to R3 |
| 999 | while (param_index < num_params) { |
| 1000 | Class* param_type = param_types->Get(param_index); |
| 1001 | Object* obj; |
| 1002 | if (!param_type->IsPrimitive()) { |
| 1003 | obj = self->DecodeJObject(*reinterpret_cast<jobject*>(stack_args + (cur_arg * kPointerSize))); |
| 1004 | } else { |
| 1005 | JValue val = *reinterpret_cast<JValue*>(stack_args + (cur_arg * kPointerSize)); |
| 1006 | BoxPrimitive(env, param_type, val); |
| 1007 | if (self->IsExceptionPending()) { |
| 1008 | return; |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 1009 | } |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 1010 | obj = val.l; |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 1011 | } |
Ian Rogers | 14b1b24 | 2011-10-11 18:54:34 -0700 | [diff] [blame] | 1012 | args->Set(param_index, obj); |
| 1013 | cur_arg = cur_arg + (param_type->IsPrimitiveLong() || param_type->IsPrimitiveDouble() ? 2 : 1); |
| 1014 | param_index++; |
Ian Rogers | dfcdf1a | 2011-10-10 17:50:35 -0700 | [diff] [blame] | 1015 | } |
| 1016 | // Get the InvocationHandler method and the field that holds it within the Proxy object |
| 1017 | static jmethodID inv_hand_invoke_mid = NULL; |
| 1018 | static jfieldID proxy_inv_hand_fid = NULL; |
| 1019 | if (proxy_inv_hand_fid == NULL) { |
| 1020 | ScopedLocalRef<jclass> proxy(env, env->FindClass("java.lang.reflect.Proxy")); |
| 1021 | proxy_inv_hand_fid = env->GetFieldID(proxy.get(), "h", "Ljava/lang/reflect/InvocationHandler;"); |
| 1022 | ScopedLocalRef<jclass> inv_hand_class(env, env->FindClass("java.lang.reflect.InvocationHandler")); |
| 1023 | inv_hand_invoke_mid = env->GetMethodID(inv_hand_class.get(), "invoke", |
| 1024 | "(Ljava/lang/Object;Ljava/lang/reflect/Method;[Ljava/lang/Object;)Ljava/lang/Object;"); |
| 1025 | } |
| 1026 | DCHECK(env->IsInstanceOf(rcvr_jobj, env->FindClass("java.lang.reflect.Proxy"))); |
| 1027 | jobject inv_hand = env->GetObjectField(rcvr_jobj, proxy_inv_hand_fid); |
| 1028 | // Call InvocationHandler.invoke |
| 1029 | jobject result = env->CallObjectMethodA(inv_hand, inv_hand_invoke_mid, args_jobj); |
| 1030 | // Place result in stack args |
| 1031 | if (!self->IsExceptionPending()) { |
| 1032 | Object* result_ref = self->DecodeJObject(result); |
| 1033 | if (result_ref != NULL) { |
| 1034 | JValue result_unboxed; |
| 1035 | UnboxPrimitive(env, result_ref, proxy_method->GetReturnType(), result_unboxed); |
| 1036 | *reinterpret_cast<JValue*>(stack_args) = result_unboxed; |
| 1037 | } else { |
| 1038 | *reinterpret_cast<jobject*>(stack_args) = NULL; |
| 1039 | } |
| 1040 | } |
| 1041 | } |
| 1042 | |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 1043 | /* |
| 1044 | * Float/double conversion requires clamping to min and max of integer form. If |
| 1045 | * target doesn't support this normally, use these. |
| 1046 | */ |
| 1047 | int64_t D2L(double d) { |
| 1048 | static const double kMaxLong = (double)(int64_t)0x7fffffffffffffffULL; |
| 1049 | static const double kMinLong = (double)(int64_t)0x8000000000000000ULL; |
| 1050 | if (d >= kMaxLong) |
| 1051 | return (int64_t)0x7fffffffffffffffULL; |
| 1052 | else if (d <= kMinLong) |
| 1053 | return (int64_t)0x8000000000000000ULL; |
| 1054 | else if (d != d) // NaN case |
| 1055 | return 0; |
| 1056 | else |
| 1057 | return (int64_t)d; |
| 1058 | } |
| 1059 | |
| 1060 | int64_t F2L(float f) { |
| 1061 | static const float kMaxLong = (float)(int64_t)0x7fffffffffffffffULL; |
| 1062 | static const float kMinLong = (float)(int64_t)0x8000000000000000ULL; |
| 1063 | if (f >= kMaxLong) |
| 1064 | return (int64_t)0x7fffffffffffffffULL; |
| 1065 | else if (f <= kMinLong) |
| 1066 | return (int64_t)0x8000000000000000ULL; |
| 1067 | else if (f != f) // NaN case |
| 1068 | return 0; |
| 1069 | else |
| 1070 | return (int64_t)f; |
| 1071 | } |
| 1072 | |
| 1073 | } // namespace art |