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 | |
| 19 | namespace art { |
| 20 | |
| 21 | // Temporary debugging hook for compiler. |
| 22 | extern void DebugMe(Method* method, uint32_t info) { |
| 23 | LOG(INFO) << "DebugMe"; |
| 24 | if (method != NULL) { |
| 25 | LOG(INFO) << PrettyMethod(method); |
| 26 | } |
| 27 | LOG(INFO) << "Info: " << info; |
| 28 | } |
| 29 | |
| 30 | // Return value helper for jobject return types |
| 31 | extern Object* DecodeJObjectInThread(Thread* thread, jobject obj) { |
| 32 | return thread->DecodeJObject(obj); |
| 33 | } |
| 34 | |
| 35 | extern void* FindNativeMethod(Thread* thread) { |
| 36 | DCHECK(Thread::Current() == thread); |
| 37 | |
| 38 | Method* method = const_cast<Method*>(thread->GetCurrentMethod()); |
| 39 | DCHECK(method != NULL); |
| 40 | |
| 41 | // Lookup symbol address for method, on failure we'll return NULL with an |
| 42 | // exception set, otherwise we return the address of the method we found. |
| 43 | void* native_code = thread->GetJniEnv()->vm->FindCodeForNativeMethod(method); |
| 44 | if (native_code == NULL) { |
| 45 | DCHECK(thread->IsExceptionPending()); |
| 46 | return NULL; |
| 47 | } else { |
| 48 | // Register so that future calls don't come here |
| 49 | method->RegisterNative(native_code); |
| 50 | return native_code; |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | // Called by generated call to throw an exception |
| 55 | extern "C" void artDeliverExceptionFromCode(Throwable* exception, Thread* thread, Method** sp) { |
| 56 | /* |
| 57 | * exception may be NULL, in which case this routine should |
| 58 | * throw NPE. NOTE: this is a convenience for generated code, |
| 59 | * which previously did the null check inline and constructed |
| 60 | * and threw a NPE if NULL. This routine responsible for setting |
| 61 | * exception_ in thread and delivering the exception. |
| 62 | */ |
| 63 | // Place a special frame at the TOS that will save all callee saves |
| 64 | *sp = Runtime::Current()->GetCalleeSaveMethod(); |
| 65 | thread->SetTopOfStack(sp, 0); |
| 66 | if (exception == NULL) { |
| 67 | thread->ThrowNewException("Ljava/lang/NullPointerException;", "throw with null exception"); |
| 68 | } else { |
| 69 | thread->SetException(exception); |
| 70 | } |
| 71 | thread->DeliverException(); |
| 72 | } |
| 73 | |
| 74 | // Deliver an exception that's pending on thread helping set up a callee save frame on the way |
| 75 | extern "C" void artDeliverPendingExceptionFromCode(Thread* thread, Method** sp) { |
| 76 | *sp = Runtime::Current()->GetCalleeSaveMethod(); |
| 77 | thread->SetTopOfStack(sp, 0); |
| 78 | thread->DeliverException(); |
| 79 | } |
| 80 | |
| 81 | // Called by generated call to throw a NPE exception |
| 82 | extern "C" void artThrowNullPointerExceptionFromCode(Thread* thread, Method** sp) { |
| 83 | // Place a special frame at the TOS that will save all callee saves |
| 84 | *sp = Runtime::Current()->GetCalleeSaveMethod(); |
| 85 | thread->SetTopOfStack(sp, 0); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 86 | thread->ThrowNewException("Ljava/lang/NullPointerException;", NULL); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 87 | thread->DeliverException(); |
| 88 | } |
| 89 | |
| 90 | // Called by generated call to throw an arithmetic divide by zero exception |
| 91 | extern "C" void artThrowDivZeroFromCode(Thread* thread, Method** sp) { |
| 92 | // Place a special frame at the TOS that will save all callee saves |
| 93 | *sp = Runtime::Current()->GetCalleeSaveMethod(); |
| 94 | thread->SetTopOfStack(sp, 0); |
| 95 | thread->ThrowNewException("Ljava/lang/ArithmeticException;", "divide by zero"); |
| 96 | thread->DeliverException(); |
| 97 | } |
| 98 | |
| 99 | // Called by generated call to throw an arithmetic divide by zero exception |
| 100 | extern "C" void artThrowArrayBoundsFromCode(int index, int limit, Thread* thread, Method** sp) { |
| 101 | // Place a special frame at the TOS that will save all callee saves |
| 102 | *sp = Runtime::Current()->GetCalleeSaveMethod(); |
| 103 | thread->SetTopOfStack(sp, 0); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 104 | thread->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;", "length=%d; index=%d", |
| 105 | limit, index); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 106 | thread->DeliverException(); |
| 107 | } |
| 108 | |
| 109 | // Called by the AbstractMethodError stub (not runtime support) |
| 110 | extern void ThrowAbstractMethodErrorFromCode(Method* method, Thread* thread, Method** sp) { |
| 111 | *sp = Runtime::Current()->GetCalleeSaveMethod(); |
| 112 | thread->SetTopOfStack(sp, 0); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 113 | thread->ThrowNewExceptionF("Ljava/lang/AbstractMethodError;", "abstract method \"%s\"", |
| 114 | PrettyMethod(method).c_str()); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 115 | thread->DeliverException(); |
| 116 | } |
| 117 | |
| 118 | extern "C" void artThrowStackOverflowFromCode(Method* method, Thread* thread, Method** sp) { |
| 119 | // Place a special frame at the TOS that will save all callee saves |
| 120 | Runtime* runtime = Runtime::Current(); |
| 121 | *sp = runtime->GetCalleeSaveMethod(); |
| 122 | thread->SetTopOfStack(sp, 0); |
| 123 | thread->SetStackEndForStackOverflow(); // Allow space on the stack for constructor to execute |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 124 | thread->ThrowNewExceptionF("Ljava/lang/StackOverflowError;", |
| 125 | "stack size %zdkb; default stack size: %zdkb", |
| 126 | thread->GetStackSize() / KB, runtime->GetDefaultStackSize() / KB); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 127 | thread->ResetDefaultStackEnd(); // Return to default stack size |
| 128 | thread->DeliverException(); |
| 129 | } |
| 130 | |
| 131 | extern "C" void artThrowVerificationErrorFromCode(int32_t src1, int32_t ref, Thread* thread, Method** sp) { |
| 132 | // Place a special frame at the TOS that will save all callee saves |
| 133 | Runtime* runtime = Runtime::Current(); |
| 134 | *sp = runtime->GetCalleeSaveMethod(); |
| 135 | thread->SetTopOfStack(sp, 0); |
| 136 | LOG(WARNING) << "TODO: verifcation error detail message. src1=" << src1 << " ref=" << ref; |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 137 | thread->ThrowNewExceptionF("Ljava/lang/VerifyError;", |
| 138 | "TODO: verification error detail message. src1=%d; ref=%d", src1, ref); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 139 | thread->DeliverException(); |
| 140 | } |
| 141 | |
| 142 | extern "C" void artThrowInternalErrorFromCode(int32_t errnum, Thread* thread, Method** sp) { |
| 143 | // Place a special frame at the TOS that will save all callee saves |
| 144 | Runtime* runtime = Runtime::Current(); |
| 145 | *sp = runtime->GetCalleeSaveMethod(); |
| 146 | thread->SetTopOfStack(sp, 0); |
| 147 | LOG(WARNING) << "TODO: internal error detail message. errnum=" << errnum; |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 148 | thread->ThrowNewExceptionF("Ljava/lang/InternalError;", "errnum=%d", errnum); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 149 | thread->DeliverException(); |
| 150 | } |
| 151 | |
| 152 | extern "C" void artThrowRuntimeExceptionFromCode(int32_t errnum, Thread* thread, Method** sp) { |
| 153 | // Place a special frame at the TOS that will save all callee saves |
| 154 | Runtime* runtime = Runtime::Current(); |
| 155 | *sp = runtime->GetCalleeSaveMethod(); |
| 156 | thread->SetTopOfStack(sp, 0); |
| 157 | LOG(WARNING) << "TODO: runtime exception detail message. errnum=" << errnum; |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 158 | thread->ThrowNewExceptionF("Ljava/lang/RuntimeException;", "errnum=%d", errnum); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 159 | thread->DeliverException(); |
| 160 | } |
| 161 | |
| 162 | extern "C" void artThrowNoSuchMethodFromCode(int32_t method_idx, Thread* thread, Method** sp) { |
| 163 | // Place a special frame at the TOS that will save all callee saves |
| 164 | Runtime* runtime = Runtime::Current(); |
| 165 | *sp = runtime->GetCalleeSaveMethod(); |
| 166 | thread->SetTopOfStack(sp, 0); |
| 167 | LOG(WARNING) << "TODO: no such method exception detail message. method_idx=" << method_idx; |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 168 | thread->ThrowNewExceptionF("Ljava/lang/NoSuchMethodError;", "method_idx=%d", method_idx); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 169 | thread->DeliverException(); |
| 170 | } |
| 171 | |
| 172 | extern "C" void artThrowNegArraySizeFromCode(int32_t size, Thread* thread, Method** sp) { |
| 173 | LOG(WARNING) << "UNTESTED artThrowNegArraySizeFromCode"; |
| 174 | // Place a special frame at the TOS that will save all callee saves |
| 175 | Runtime* runtime = Runtime::Current(); |
| 176 | *sp = runtime->GetCalleeSaveMethod(); |
| 177 | thread->SetTopOfStack(sp, 0); |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 178 | thread->ThrowNewExceptionF("Ljava/lang/NegativeArraySizeException;", "%d", size); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 179 | thread->DeliverException(); |
| 180 | } |
| 181 | |
| 182 | // TODO: placeholder. Helper function to type |
| 183 | Class* InitializeTypeFromCode(uint32_t type_idx, Method* method) { |
| 184 | /* |
| 185 | * Should initialize & fix up method->dex_cache_resolved_types_[]. |
| 186 | * Returns initialized type. Does not return normally if an exception |
| 187 | * is thrown, but instead initiates the catch. Should be similar to |
| 188 | * ClassLinker::InitializeStaticStorageFromCode. |
| 189 | */ |
| 190 | UNIMPLEMENTED(FATAL); |
| 191 | return NULL; |
| 192 | } |
| 193 | |
| 194 | // TODO: placeholder. Helper function to resolve virtual method |
| 195 | void ResolveMethodFromCode(Method* method, uint32_t method_idx) { |
| 196 | /* |
| 197 | * Slow-path handler on invoke virtual method path in which |
| 198 | * base method is unresolved at compile-time. Doesn't need to |
| 199 | * return anything - just either ensure that |
| 200 | * method->dex_cache_resolved_methods_(method_idx) != NULL or |
| 201 | * throw and unwind. The caller will restart call sequence |
| 202 | * from the beginning. |
| 203 | */ |
| 204 | } |
| 205 | |
| 206 | // Given the context of a calling Method, use its DexCache to resolve a type to a Class. If it |
| 207 | // cannot be resolved, throw an error. If it can, use it to create an instance. |
| 208 | extern "C" Object* artAllocObjectFromCode(uint32_t type_idx, Method* method) { |
| 209 | Class* klass = method->GetDexCacheResolvedTypes()->Get(type_idx); |
| 210 | if (klass == NULL) { |
| 211 | klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); |
| 212 | if (klass == NULL) { |
| 213 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 214 | return NULL; // Failure |
| 215 | } |
| 216 | } |
| 217 | if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(klass, true)) { |
| 218 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 219 | return NULL; // Failure |
| 220 | } |
| 221 | return klass->AllocObject(); |
| 222 | } |
| 223 | |
| 224 | // Helper function to alloc array for OP_FILLED_NEW_ARRAY |
| 225 | extern "C" Array* artCheckAndArrayAllocFromCode(uint32_t type_idx, Method* method, |
| 226 | int32_t component_count) { |
| 227 | if (component_count < 0) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 228 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/NegativeArraySizeException;", "%d", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 229 | component_count); |
| 230 | return NULL; // Failure |
| 231 | } |
| 232 | Class* klass = method->GetDexCacheResolvedTypes()->Get(type_idx); |
| 233 | if (klass == NULL) { // Not in dex cache so try to resolve |
| 234 | klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); |
| 235 | if (klass == NULL) { // Error |
| 236 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 237 | return NULL; // Failure |
| 238 | } |
| 239 | } |
| 240 | if (klass->IsPrimitive() && !klass->IsPrimitiveInt()) { |
| 241 | if (klass->IsPrimitiveLong() || klass->IsPrimitiveDouble()) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 242 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/RuntimeException;", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 243 | "Bad filled array request for type %s", |
| 244 | PrettyDescriptor(klass->GetDescriptor()).c_str()); |
| 245 | } else { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 246 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/InternalError;", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 247 | "Found type %s; filled-new-array not implemented for anything but \'int\'", |
| 248 | PrettyDescriptor(klass->GetDescriptor()).c_str()); |
| 249 | } |
| 250 | return NULL; // Failure |
| 251 | } else { |
| 252 | CHECK(klass->IsArrayClass()) << PrettyClass(klass); |
| 253 | return Array::Alloc(klass, component_count); |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | // Given the context of a calling Method, use its DexCache to resolve a type to an array Class. If |
| 258 | // it cannot be resolved, throw an error. If it can, use it to create an array. |
| 259 | extern "C" Array* artArrayAllocFromCode(uint32_t type_idx, Method* method, int32_t component_count) { |
| 260 | if (component_count < 0) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 261 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/NegativeArraySizeException;", "%d", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 262 | component_count); |
| 263 | return NULL; // Failure |
| 264 | } |
| 265 | Class* klass = method->GetDexCacheResolvedTypes()->Get(type_idx); |
| 266 | if (klass == NULL) { // Not in dex cache so try to resolve |
| 267 | klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); |
| 268 | if (klass == NULL) { // Error |
| 269 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 270 | return NULL; // Failure |
| 271 | } |
| 272 | CHECK(klass->IsArrayClass()) << PrettyClass(klass); |
| 273 | } |
| 274 | return Array::Alloc(klass, component_count); |
| 275 | } |
| 276 | |
| 277 | // Check whether it is safe to cast one class to the other, throw exception and return -1 on failure |
| 278 | extern "C" int artCheckCastFromCode(const Class* a, const Class* b) { |
| 279 | DCHECK(a->IsClass()) << PrettyClass(a); |
| 280 | DCHECK(b->IsClass()) << PrettyClass(b); |
| 281 | if (b->IsAssignableFrom(a)) { |
| 282 | return 0; // Success |
| 283 | } else { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 284 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/ClassCastException;", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 285 | "%s cannot be cast to %s", |
| 286 | PrettyDescriptor(a->GetDescriptor()).c_str(), |
| 287 | PrettyDescriptor(b->GetDescriptor()).c_str()); |
| 288 | return -1; // Failure |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | // Tests whether 'element' can be assigned into an array of type 'array_class'. |
| 293 | // Returns 0 on success and -1 if an exception is pending. |
| 294 | extern "C" int artCanPutArrayElementFromCode(const Object* element, const Class* array_class) { |
| 295 | DCHECK(array_class != NULL); |
| 296 | // element can't be NULL as we catch this is screened in runtime_support |
| 297 | Class* element_class = element->GetClass(); |
| 298 | Class* component_type = array_class->GetComponentType(); |
| 299 | if (component_type->IsAssignableFrom(element_class)) { |
| 300 | return 0; // Success |
| 301 | } else { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 302 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/ArrayStoreException;", |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 303 | "Cannot store an object of type %s in to an array of type %s", |
| 304 | PrettyDescriptor(element_class->GetDescriptor()).c_str(), |
| 305 | PrettyDescriptor(array_class->GetDescriptor()).c_str()); |
| 306 | return -1; // Failure |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | extern "C" int artUnlockObjectFromCode(Thread* thread, Object* obj) { |
| 311 | DCHECK(obj != NULL); // Assumed to have been checked before entry |
| 312 | return obj->MonitorExit(thread) ? 0 /* Success */ : -1 /* Failure */; |
| 313 | } |
| 314 | |
| 315 | void LockObjectFromCode(Thread* thread, Object* obj) { |
| 316 | DCHECK(obj != NULL); // Assumed to have been checked before entry |
| 317 | obj->MonitorEnter(thread); |
| 318 | DCHECK(thread->HoldsLock(obj)); |
| 319 | // Only possible exception is NPE and is handled before entry |
| 320 | DCHECK(!thread->IsExceptionPending()); |
| 321 | } |
| 322 | |
| 323 | extern "C" void artCheckSuspendFromCode(Thread* thread) { |
| 324 | Runtime::Current()->GetThreadList()->FullSuspendCheck(thread); |
| 325 | } |
| 326 | |
| 327 | /* |
| 328 | * Fill the array with predefined constant values, throwing exceptions if the array is null or |
| 329 | * not of sufficient length. |
| 330 | * |
| 331 | * NOTE: When dealing with a raw dex file, the data to be copied uses |
| 332 | * little-endian ordering. Require that oat2dex do any required swapping |
| 333 | * so this routine can get by with a memcpy(). |
| 334 | * |
| 335 | * Format of the data: |
| 336 | * ushort ident = 0x0300 magic value |
| 337 | * ushort width width of each element in the table |
| 338 | * uint size number of elements in the table |
| 339 | * ubyte data[size*width] table of data values (may contain a single-byte |
| 340 | * padding at the end) |
| 341 | */ |
| 342 | extern "C" int artHandleFillArrayDataFromCode(Array* array, const uint16_t* table) { |
| 343 | DCHECK_EQ(table[0], 0x0300); |
| 344 | if (array == NULL) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 345 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/NullPointerException;", |
| 346 | "null array in fill array"); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 347 | return -1; // Error |
| 348 | } |
| 349 | DCHECK(array->IsArrayInstance() && !array->IsObjectArray()); |
| 350 | uint32_t size = (uint32_t)table[2] | (((uint32_t)table[3]) << 16); |
| 351 | if (static_cast<int32_t>(size) > array->GetLength()) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 352 | Thread::Current()->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;", |
| 353 | "failed array fill. length=%d; index=%d", array->GetLength(), size); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 354 | return -1; // Error |
| 355 | } |
| 356 | uint16_t width = table[1]; |
| 357 | uint32_t size_in_bytes = size * width; |
| 358 | memcpy((char*)array + Array::DataOffset().Int32Value(), (char*)&table[4], size_in_bytes); |
| 359 | return 0; // Success |
| 360 | } |
| 361 | |
| 362 | // See comments in runtime_support_asm.S |
| 363 | extern "C" uint64_t artFindInterfaceMethodInCacheFromCode(uint32_t method_idx, |
| 364 | Object* this_object , |
| 365 | Method* caller_method) { |
| 366 | Thread* thread = Thread::Current(); |
| 367 | if (this_object == NULL) { |
Elliott Hughes | 5cb5ad2 | 2011-10-02 12:13:39 -0700 | [diff] [blame] | 368 | thread->ThrowNewExceptionF("Ljava/lang/NullPointerException;", |
| 369 | "null receiver during interface dispatch"); |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 370 | return 0; |
| 371 | } |
| 372 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 373 | Method* interface_method = class_linker->ResolveMethod(method_idx, caller_method, false); |
| 374 | if (interface_method == NULL) { |
| 375 | // Could not resolve interface method. Throw error and unwind |
| 376 | CHECK(thread->IsExceptionPending()); |
| 377 | return 0; |
| 378 | } |
| 379 | Method* method = this_object->GetClass()->FindVirtualMethodForInterface(interface_method); |
| 380 | if (method == NULL) { |
| 381 | CHECK(thread->IsExceptionPending()); |
| 382 | return 0; |
| 383 | } |
| 384 | const void* code = method->GetCode(); |
| 385 | |
| 386 | uint32_t method_uint = reinterpret_cast<uint32_t>(method); |
| 387 | uint64_t code_uint = reinterpret_cast<uint32_t>(code); |
| 388 | uint64_t result = ((code_uint << 32) | method_uint); |
| 389 | return result; |
| 390 | } |
| 391 | |
| 392 | /* |
| 393 | * Float/double conversion requires clamping to min and max of integer form. If |
| 394 | * target doesn't support this normally, use these. |
| 395 | */ |
| 396 | int64_t D2L(double d) { |
| 397 | static const double kMaxLong = (double)(int64_t)0x7fffffffffffffffULL; |
| 398 | static const double kMinLong = (double)(int64_t)0x8000000000000000ULL; |
| 399 | if (d >= kMaxLong) |
| 400 | return (int64_t)0x7fffffffffffffffULL; |
| 401 | else if (d <= kMinLong) |
| 402 | return (int64_t)0x8000000000000000ULL; |
| 403 | else if (d != d) // NaN case |
| 404 | return 0; |
| 405 | else |
| 406 | return (int64_t)d; |
| 407 | } |
| 408 | |
| 409 | int64_t F2L(float f) { |
| 410 | static const float kMaxLong = (float)(int64_t)0x7fffffffffffffffULL; |
| 411 | static const float kMinLong = (float)(int64_t)0x8000000000000000ULL; |
| 412 | if (f >= kMaxLong) |
| 413 | return (int64_t)0x7fffffffffffffffULL; |
| 414 | else if (f <= kMinLong) |
| 415 | return (int64_t)0x8000000000000000ULL; |
| 416 | else if (f != f) // NaN case |
| 417 | return 0; |
| 418 | else |
| 419 | return (int64_t)f; |
| 420 | } |
| 421 | |
| 422 | } // namespace art |