Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 1 | /* |
Elliott Hughes | 0f3c553 | 2012-03-30 14:51:51 -0700 | [diff] [blame] | 2 | * Copyright (C) 2012 The Android Open Source Project |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 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 | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 19 | #include "class_linker-inl.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 20 | #include "dex_file-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 21 | #include "gc/card_table-inl.h" |
| 22 | #include "mirror/abstract_method-inl.h" |
| 23 | #include "mirror/class-inl.h" |
| 24 | #include "mirror/field-inl.h" |
| 25 | #include "mirror/object-inl.h" |
| 26 | #include "mirror/object_array-inl.h" |
| 27 | #include "mirror/proxy.h" |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 28 | #include "reflection.h" |
| 29 | #include "scoped_thread_state_change.h" |
TDYa127 | 5bb8601 | 2012-04-11 05:57:28 -0700 | [diff] [blame] | 30 | #include "ScopedLocalRef.h" |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 31 | #include "well_known_classes.h" |
TDYa127 | 5bb8601 | 2012-04-11 05:57:28 -0700 | [diff] [blame] | 32 | |
jeffhao | 41005dd | 2012-05-09 17:58:52 -0700 | [diff] [blame] | 33 | double art_l2d(int64_t l) { |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 34 | return static_cast<double>(l); |
jeffhao | 41005dd | 2012-05-09 17:58:52 -0700 | [diff] [blame] | 35 | } |
| 36 | |
| 37 | float art_l2f(int64_t l) { |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 38 | return static_cast<float>(l); |
jeffhao | 41005dd | 2012-05-09 17:58:52 -0700 | [diff] [blame] | 39 | } |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 40 | |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 41 | /* |
| 42 | * Float/double conversion requires clamping to min and max of integer form. If |
| 43 | * target doesn't support this normally, use these. |
| 44 | */ |
jeffhao | 41005dd | 2012-05-09 17:58:52 -0700 | [diff] [blame] | 45 | int64_t art_d2l(double d) { |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 46 | static const double kMaxLong = static_cast<double>(static_cast<int64_t>(0x7fffffffffffffffULL)); |
| 47 | static const double kMinLong = static_cast<double>(static_cast<int64_t>(0x8000000000000000ULL)); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 48 | if (d >= kMaxLong) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 49 | return static_cast<int64_t>(0x7fffffffffffffffULL); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 50 | } else if (d <= kMinLong) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 51 | return static_cast<int64_t>(0x8000000000000000ULL); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 52 | } else if (d != d) { // NaN case |
| 53 | return 0; |
| 54 | } else { |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 55 | return static_cast<int64_t>(d); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 56 | } |
| 57 | } |
| 58 | |
jeffhao | 41005dd | 2012-05-09 17:58:52 -0700 | [diff] [blame] | 59 | int64_t art_f2l(float f) { |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 60 | static const float kMaxLong = static_cast<float>(static_cast<int64_t>(0x7fffffffffffffffULL)); |
| 61 | static const float kMinLong = static_cast<float>(static_cast<int64_t>(0x8000000000000000ULL)); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 62 | if (f >= kMaxLong) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 63 | return static_cast<int64_t>(0x7fffffffffffffffULL); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 64 | } else if (f <= kMinLong) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 65 | return static_cast<int64_t>(0x8000000000000000ULL); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 66 | } else if (f != f) { // NaN case |
| 67 | return 0; |
| 68 | } else { |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 69 | return static_cast<int64_t>(f); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 70 | } |
| 71 | } |
| 72 | |
jeffhao | 41005dd | 2012-05-09 17:58:52 -0700 | [diff] [blame] | 73 | int32_t art_d2i(double d) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 74 | static const double kMaxInt = static_cast<double>(static_cast<int32_t>(0x7fffffffUL)); |
| 75 | static const double kMinInt = static_cast<double>(static_cast<int32_t>(0x80000000UL)); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 76 | if (d >= kMaxInt) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 77 | return static_cast<int32_t>(0x7fffffffUL); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 78 | } else if (d <= kMinInt) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 79 | return static_cast<int32_t>(0x80000000UL); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 80 | } else if (d != d) { // NaN case |
| 81 | return 0; |
| 82 | } else { |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 83 | return static_cast<int32_t>(d); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 84 | } |
| 85 | } |
| 86 | |
jeffhao | 41005dd | 2012-05-09 17:58:52 -0700 | [diff] [blame] | 87 | int32_t art_f2i(float f) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 88 | static const float kMaxInt = static_cast<float>(static_cast<int32_t>(0x7fffffffUL)); |
| 89 | static const float kMinInt = static_cast<float>(static_cast<int32_t>(0x80000000UL)); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 90 | if (f >= kMaxInt) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 91 | return static_cast<int32_t>(0x7fffffffUL); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 92 | } else if (f <= kMinInt) { |
Logan Chien | 008fa51 | 2012-06-22 08:09:57 -0700 | [diff] [blame] | 93 | return static_cast<int32_t>(0x80000000UL); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 94 | } else if (f != f) { // NaN case |
| 95 | return 0; |
| 96 | } else { |
Elliott Hughes | 7484741 | 2012-06-20 18:10:21 -0700 | [diff] [blame] | 97 | return static_cast<int32_t>(f); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 98 | } |
| 99 | } |
| 100 | |
jeffhao | 41005dd | 2012-05-09 17:58:52 -0700 | [diff] [blame] | 101 | namespace art { |
| 102 | |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 103 | // Helper function to allocate array for FILLED_NEW_ARRAY. |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 104 | mirror::Array* CheckAndAllocArrayFromCode(uint32_t type_idx, mirror::AbstractMethod* referrer, |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 105 | int32_t component_count, Thread* self, |
| 106 | bool access_check) { |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 107 | if (UNLIKELY(component_count < 0)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 108 | ThrowNegativeArraySizeException(component_count); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 109 | return NULL; // Failure |
Elliott Hughes | 6c8867d | 2011-10-03 16:34:05 -0700 | [diff] [blame] | 110 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 111 | mirror::Class* klass = referrer->GetDexCacheResolvedTypes()->Get(type_idx); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 112 | if (UNLIKELY(klass == NULL)) { // Not in dex cache so try to resolve |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 113 | klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, referrer); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 114 | if (klass == NULL) { // Error |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 115 | DCHECK(self->IsExceptionPending()); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 116 | return NULL; // Failure |
Ian Rogers | 1984651 | 2012-02-24 11:42:47 -0800 | [diff] [blame] | 117 | } |
Ian Rogers | ea2a11d | 2011-10-11 16:48:51 -0700 | [diff] [blame] | 118 | } |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 119 | if (UNLIKELY(klass->IsPrimitive() && !klass->IsPrimitiveInt())) { |
| 120 | if (klass->IsPrimitiveLong() || klass->IsPrimitiveDouble()) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 121 | ThrowRuntimeException("Bad filled array request for type %s", |
| 122 | PrettyDescriptor(klass).c_str()); |
Ian Rogers | 573db4a | 2011-12-13 15:30:50 -0800 | [diff] [blame] | 123 | } else { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 124 | ThrowLocation throw_location = self->GetCurrentLocationForThrow(); |
| 125 | DCHECK(throw_location.GetMethod() == referrer); |
| 126 | self->ThrowNewExceptionF(throw_location, "Ljava/lang/InternalError;", |
Ian Rogers | 50b35e2 | 2012-10-04 10:09:15 -0700 | [diff] [blame] | 127 | "Found type %s; filled-new-array not implemented for anything but \'int\'", |
| 128 | PrettyDescriptor(klass).c_str()); |
Ian Rogers | 573db4a | 2011-12-13 15:30:50 -0800 | [diff] [blame] | 129 | } |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 130 | return NULL; // Failure |
Ian Rogers | ad25ac5 | 2011-10-04 19:13:33 -0700 | [diff] [blame] | 131 | } else { |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 132 | if (access_check) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 133 | mirror::Class* referrer_klass = referrer->GetDeclaringClass(); |
| 134 | if (UNLIKELY(!referrer_klass->CanAccess(klass))) { |
| 135 | ThrowIllegalAccessErrorClass(referrer_klass, klass); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 136 | return NULL; // Failure |
| 137 | } |
Ian Rogers | 60db5ab | 2012-02-20 17:02:00 -0800 | [diff] [blame] | 138 | } |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 139 | DCHECK(klass->IsArrayClass()) << PrettyClass(klass); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 140 | return mirror::Array::Alloc(self, klass, component_count); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 141 | } |
| 142 | } |
| 143 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 144 | mirror::Field* FindFieldFromCode(uint32_t field_idx, const mirror::AbstractMethod* referrer, |
Sebastien Hertz | 233ea8e | 2013-06-06 11:57:09 +0200 | [diff] [blame] | 145 | Thread* self, FindFieldType type, size_t expected_size, |
| 146 | bool access_check) { |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 147 | bool is_primitive; |
| 148 | bool is_set; |
| 149 | bool is_static; |
| 150 | switch (type) { |
| 151 | case InstanceObjectRead: is_primitive = false; is_set = false; is_static = false; break; |
| 152 | case InstanceObjectWrite: is_primitive = false; is_set = true; is_static = false; break; |
| 153 | case InstancePrimitiveRead: is_primitive = true; is_set = false; is_static = false; break; |
| 154 | case InstancePrimitiveWrite: is_primitive = true; is_set = true; is_static = false; break; |
| 155 | case StaticObjectRead: is_primitive = false; is_set = false; is_static = true; break; |
| 156 | case StaticObjectWrite: is_primitive = false; is_set = true; is_static = true; break; |
| 157 | case StaticPrimitiveRead: is_primitive = true; is_set = false; is_static = true; break; |
| 158 | case StaticPrimitiveWrite: // Keep GCC happy by having a default handler, fall-through. |
| 159 | default: is_primitive = true; is_set = true; is_static = true; break; |
| 160 | } |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 161 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 162 | mirror::Field* resolved_field = class_linker->ResolveField(field_idx, referrer, is_static); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 163 | if (UNLIKELY(resolved_field == NULL)) { |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 164 | DCHECK(self->IsExceptionPending()); // Throw exception and unwind. |
| 165 | return NULL; // Failure. |
Sebastien Hertz | 233ea8e | 2013-06-06 11:57:09 +0200 | [diff] [blame] | 166 | } |
| 167 | mirror::Class* fields_class = resolved_field->GetDeclaringClass(); |
| 168 | if (access_check) { |
Sebastien Hertz | 807a256 | 2013-04-15 09:33:39 +0200 | [diff] [blame] | 169 | if (UNLIKELY(resolved_field->IsStatic() != is_static)) { |
Ian Rogers | 87e552d | 2012-08-31 15:54:48 -0700 | [diff] [blame] | 170 | ThrowIncompatibleClassChangeErrorField(resolved_field, is_static, referrer); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 171 | return NULL; |
| 172 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 173 | mirror::Class* referring_class = referrer->GetDeclaringClass(); |
Ian Rogers | e2645d3 | 2012-04-11 14:42:42 -0700 | [diff] [blame] | 174 | if (UNLIKELY(!referring_class->CanAccess(fields_class) || |
| 175 | !referring_class->CanAccessMember(fields_class, |
| 176 | resolved_field->GetAccessFlags()))) { |
| 177 | // The referring class can't access the resolved field, this may occur as a result of a |
| 178 | // protected field being made public by a sub-class. Resort to the dex file to determine |
| 179 | // the correct class for the access check. |
Ian Rogers | 4445a7e | 2012-10-05 17:19:13 -0700 | [diff] [blame] | 180 | const DexFile& dex_file = *referring_class->GetDexCache()->GetDexFile(); |
Ian Rogers | e2645d3 | 2012-04-11 14:42:42 -0700 | [diff] [blame] | 181 | fields_class = class_linker->ResolveType(dex_file, |
| 182 | dex_file.GetFieldId(field_idx).class_idx_, |
| 183 | referring_class); |
| 184 | if (UNLIKELY(!referring_class->CanAccess(fields_class))) { |
Ian Rogers | 87e552d | 2012-08-31 15:54:48 -0700 | [diff] [blame] | 185 | ThrowIllegalAccessErrorClass(referring_class, fields_class); |
Ian Rogers | e2645d3 | 2012-04-11 14:42:42 -0700 | [diff] [blame] | 186 | return NULL; // failure |
| 187 | } else if (UNLIKELY(!referring_class->CanAccessMember(fields_class, |
| 188 | resolved_field->GetAccessFlags()))) { |
Ian Rogers | 87e552d | 2012-08-31 15:54:48 -0700 | [diff] [blame] | 189 | ThrowIllegalAccessErrorField(referring_class, resolved_field); |
Ian Rogers | e2645d3 | 2012-04-11 14:42:42 -0700 | [diff] [blame] | 190 | return NULL; // failure |
| 191 | } |
| 192 | } |
| 193 | if (UNLIKELY(is_set && resolved_field->IsFinal() && (fields_class != referring_class))) { |
Ian Rogers | 87e552d | 2012-08-31 15:54:48 -0700 | [diff] [blame] | 194 | ThrowIllegalAccessErrorFinalField(referrer, resolved_field); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 195 | return NULL; // failure |
| 196 | } else { |
| 197 | FieldHelper fh(resolved_field); |
| 198 | if (UNLIKELY(fh.IsPrimitiveType() != is_primitive || |
| 199 | fh.FieldSize() != expected_size)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 200 | ThrowLocation throw_location = self->GetCurrentLocationForThrow(); |
| 201 | DCHECK(throw_location.GetMethod() == referrer); |
| 202 | self->ThrowNewExceptionF(throw_location, "Ljava/lang/NoSuchFieldError;", |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 203 | "Attempted read of %zd-bit %s on field '%s'", |
| 204 | expected_size * (32 / sizeof(int32_t)), |
| 205 | is_primitive ? "primitive" : "non-primitive", |
| 206 | PrettyField(resolved_field, true).c_str()); |
| 207 | return NULL; // failure |
Ian Rogers | 60db5ab | 2012-02-20 17:02:00 -0800 | [diff] [blame] | 208 | } |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 209 | } |
| 210 | } |
Sebastien Hertz | 233ea8e | 2013-06-06 11:57:09 +0200 | [diff] [blame] | 211 | if (!is_static) { |
| 212 | // instance fields must be being accessed on an initialized class |
| 213 | return resolved_field; |
| 214 | } else { |
| 215 | // If the class is initialized we're done. |
| 216 | if (fields_class->IsInitialized()) { |
| 217 | return resolved_field; |
| 218 | } else if (Runtime::Current()->GetClassLinker()->EnsureInitialized(fields_class, true, true)) { |
| 219 | // Otherwise let's ensure the class is initialized before resolving the field. |
| 220 | return resolved_field; |
| 221 | } else { |
| 222 | DCHECK(self->IsExceptionPending()); // Throw exception and unwind |
| 223 | return NULL; // failure |
| 224 | } |
| 225 | } |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | // Slow path method resolution |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 229 | mirror::AbstractMethod* FindMethodFromCode(uint32_t method_idx, mirror::Object* this_object, |
| 230 | mirror::AbstractMethod* referrer, |
| 231 | Thread* self, bool access_check, InvokeType type) { |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 232 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 233 | bool is_direct = type == kStatic || type == kDirect; |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 234 | mirror::AbstractMethod* resolved_method = class_linker->ResolveMethod(method_idx, referrer, type); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 235 | if (UNLIKELY(resolved_method == NULL)) { |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 236 | DCHECK(self->IsExceptionPending()); // Throw exception and unwind. |
| 237 | return NULL; // Failure. |
jeffhao | 262e251 | 2012-12-11 09:46:43 -0800 | [diff] [blame] | 238 | } else if (UNLIKELY(this_object == NULL && type != kStatic)) { |
| 239 | // Maintain interpreter-like semantics where NullPointerException is thrown |
| 240 | // after potential NoSuchMethodError from class linker. |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 241 | ThrowLocation throw_location = self->GetCurrentLocationForThrow(); |
| 242 | DCHECK(referrer == throw_location.GetMethod()); |
| 243 | ThrowNullPointerExceptionForMethodAccess(throw_location, method_idx, type); |
jeffhao | 262e251 | 2012-12-11 09:46:43 -0800 | [diff] [blame] | 244 | return NULL; // Failure. |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 245 | } else { |
| 246 | if (!access_check) { |
| 247 | if (is_direct) { |
| 248 | return resolved_method; |
| 249 | } else if (type == kInterface) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 250 | mirror::AbstractMethod* interface_method = |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 251 | this_object->GetClass()->FindVirtualMethodForInterface(resolved_method); |
| 252 | if (UNLIKELY(interface_method == NULL)) { |
Ian Rogers | 87e552d | 2012-08-31 15:54:48 -0700 | [diff] [blame] | 253 | ThrowIncompatibleClassChangeErrorClassForInterfaceDispatch(resolved_method, this_object, |
| 254 | referrer); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 255 | return NULL; // Failure. |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 256 | } else { |
| 257 | return interface_method; |
| 258 | } |
Ian Rogers | 60db5ab | 2012-02-20 17:02:00 -0800 | [diff] [blame] | 259 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 260 | mirror::ObjectArray<mirror::AbstractMethod>* vtable; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 261 | uint16_t vtable_index = resolved_method->GetMethodIndex(); |
| 262 | if (type == kSuper) { |
| 263 | vtable = referrer->GetDeclaringClass()->GetSuperClass()->GetVTable(); |
| 264 | } else { |
| 265 | vtable = this_object->GetClass()->GetVTable(); |
| 266 | } |
| 267 | // TODO: eliminate bounds check? |
| 268 | return vtable->Get(vtable_index); |
| 269 | } |
| 270 | } else { |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 271 | // Incompatible class change should have been handled in resolve method. |
| 272 | if (UNLIKELY(resolved_method->CheckIncompatibleClassChange(type))) { |
Ian Rogers | 2fc1427 | 2012-08-30 10:56:57 -0700 | [diff] [blame] | 273 | ThrowIncompatibleClassChangeError(type, resolved_method->GetInvokeType(), resolved_method, |
| 274 | referrer); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 275 | return NULL; // Failure. |
| 276 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 277 | mirror::Class* methods_class = resolved_method->GetDeclaringClass(); |
| 278 | mirror::Class* referring_class = referrer->GetDeclaringClass(); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 279 | if (UNLIKELY(!referring_class->CanAccess(methods_class) || |
| 280 | !referring_class->CanAccessMember(methods_class, |
| 281 | resolved_method->GetAccessFlags()))) { |
| 282 | // The referring class can't access the resolved method, this may occur as a result of a |
| 283 | // protected method being made public by implementing an interface that re-declares the |
| 284 | // method public. Resort to the dex file to determine the correct class for the access check |
Ian Rogers | 4445a7e | 2012-10-05 17:19:13 -0700 | [diff] [blame] | 285 | const DexFile& dex_file = *referring_class->GetDexCache()->GetDexFile(); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 286 | methods_class = class_linker->ResolveType(dex_file, |
| 287 | dex_file.GetMethodId(method_idx).class_idx_, |
| 288 | referring_class); |
| 289 | if (UNLIKELY(!referring_class->CanAccess(methods_class))) { |
Ian Rogers | 87e552d | 2012-08-31 15:54:48 -0700 | [diff] [blame] | 290 | ThrowIllegalAccessErrorClassForMethodDispatch(referring_class, methods_class, |
| 291 | referrer, resolved_method, type); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 292 | return NULL; // Failure. |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 293 | } else if (UNLIKELY(!referring_class->CanAccessMember(methods_class, |
| 294 | resolved_method->GetAccessFlags()))) { |
Ian Rogers | 87e552d | 2012-08-31 15:54:48 -0700 | [diff] [blame] | 295 | ThrowIllegalAccessErrorMethod(referring_class, resolved_method); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 296 | return NULL; // Failure. |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 297 | } |
| 298 | } |
| 299 | if (is_direct) { |
| 300 | return resolved_method; |
| 301 | } else if (type == kInterface) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 302 | mirror::AbstractMethod* interface_method = |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 303 | this_object->GetClass()->FindVirtualMethodForInterface(resolved_method); |
| 304 | if (UNLIKELY(interface_method == NULL)) { |
Ian Rogers | 87e552d | 2012-08-31 15:54:48 -0700 | [diff] [blame] | 305 | ThrowIncompatibleClassChangeErrorClassForInterfaceDispatch(resolved_method, this_object, |
| 306 | referrer); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 307 | return NULL; // Failure. |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 308 | } else { |
| 309 | return interface_method; |
| 310 | } |
| 311 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 312 | mirror::ObjectArray<mirror::AbstractMethod>* vtable; |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 313 | uint16_t vtable_index = resolved_method->GetMethodIndex(); |
| 314 | if (type == kSuper) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 315 | mirror::Class* super_class = referring_class->GetSuperClass(); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 316 | if (LIKELY(super_class != NULL)) { |
| 317 | vtable = referring_class->GetSuperClass()->GetVTable(); |
| 318 | } else { |
| 319 | vtable = NULL; |
| 320 | } |
| 321 | } else { |
| 322 | vtable = this_object->GetClass()->GetVTable(); |
| 323 | } |
| 324 | if (LIKELY(vtable != NULL && |
| 325 | vtable_index < static_cast<uint32_t>(vtable->GetLength()))) { |
| 326 | return vtable->GetWithoutChecks(vtable_index); |
| 327 | } else { |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 328 | // Behavior to agree with that of the verifier. |
| 329 | MethodHelper mh(resolved_method); |
| 330 | ThrowNoSuchMethodError(type, resolved_method->GetDeclaringClass(), mh.GetName(), |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 331 | mh.GetSignature()); |
Ian Rogers | 08f753d | 2012-08-24 14:35:25 -0700 | [diff] [blame] | 332 | return NULL; // Failure. |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 333 | } |
Ian Rogers | 60db5ab | 2012-02-20 17:02:00 -0800 | [diff] [blame] | 334 | } |
| 335 | } |
| 336 | } |
Ian Rogers | 60db5ab | 2012-02-20 17:02:00 -0800 | [diff] [blame] | 337 | } |
| 338 | |
jeffhao | d752132 | 2012-11-21 15:38:24 -0800 | [diff] [blame] | 339 | void ThrowStackOverflowError(Thread* self) { |
| 340 | CHECK(!self->IsHandlingStackOverflow()) << "Recursive stack overflow."; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 341 | |
| 342 | if (Runtime::Current()->GetInstrumentation()->AreExitStubsInstalled()) { |
| 343 | // Remove extra entry pushed onto second stack during method tracing. |
| 344 | Runtime::Current()->GetInstrumentation()->PopMethodForUnwind(self, false); |
jeffhao | d752132 | 2012-11-21 15:38:24 -0800 | [diff] [blame] | 345 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 346 | |
jeffhao | d752132 | 2012-11-21 15:38:24 -0800 | [diff] [blame] | 347 | self->SetStackEndForStackOverflow(); // Allow space on the stack for constructor to execute. |
| 348 | JNIEnvExt* env = self->GetJniEnv(); |
| 349 | std::string msg("stack size "); |
| 350 | msg += PrettySize(self->GetStackSize()); |
| 351 | // Use low-level JNI routine and pre-baked error class to avoid class linking operations that |
| 352 | // would consume more stack. |
| 353 | int rc = ::art::ThrowNewException(env, WellKnownClasses::java_lang_StackOverflowError, |
| 354 | msg.c_str(), NULL); |
| 355 | if (rc != JNI_OK) { |
| 356 | // TODO: ThrowNewException failed presumably because of an OOME, we continue to throw the OOME |
| 357 | // or die in the CHECK below. We may want to throw a pre-baked StackOverflowError |
| 358 | // instead. |
| 359 | LOG(ERROR) << "Couldn't throw new StackOverflowError because JNI ThrowNew failed."; |
| 360 | CHECK(self->IsExceptionPending()); |
| 361 | } |
| 362 | self->ResetDefaultStackEnd(); // Return to default stack size. |
| 363 | } |
| 364 | |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 365 | JValue InvokeProxyInvocationHandler(ScopedObjectAccessUnchecked& soa, const char* shorty, |
| 366 | jobject rcvr_jobj, jobject interface_method_jobj, |
| 367 | std::vector<jvalue>& args) { |
| 368 | DCHECK(soa.Env()->IsInstanceOf(rcvr_jobj, WellKnownClasses::java_lang_reflect_Proxy)); |
| 369 | |
| 370 | // Build argument array possibly triggering GC. |
| 371 | soa.Self()->AssertThreadSuspensionIsAllowable(); |
| 372 | jobjectArray args_jobj = NULL; |
| 373 | const JValue zero; |
| 374 | if (args.size() > 0) { |
| 375 | args_jobj = soa.Env()->NewObjectArray(args.size(), WellKnownClasses::java_lang_Object, NULL); |
| 376 | if (args_jobj == NULL) { |
| 377 | CHECK(soa.Self()->IsExceptionPending()); |
| 378 | return zero; |
| 379 | } |
| 380 | for (size_t i = 0; i < args.size(); ++i) { |
| 381 | if (shorty[i + 1] == 'L') { |
| 382 | jobject val = args.at(i).l; |
| 383 | soa.Env()->SetObjectArrayElement(args_jobj, i, val); |
| 384 | } else { |
| 385 | JValue jv; |
| 386 | jv.SetJ(args.at(i).j); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 387 | mirror::Object* val = BoxPrimitive(Primitive::GetType(shorty[i + 1]), jv); |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 388 | if (val == NULL) { |
| 389 | CHECK(soa.Self()->IsExceptionPending()); |
| 390 | return zero; |
| 391 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 392 | soa.Decode<mirror::ObjectArray<mirror::Object>* >(args_jobj)->Set(i, val); |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 393 | } |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | // Call InvocationHandler.invoke(Object proxy, Method method, Object[] args). |
| 398 | jobject inv_hand = soa.Env()->GetObjectField(rcvr_jobj, |
| 399 | WellKnownClasses::java_lang_reflect_Proxy_h); |
| 400 | jvalue invocation_args[3]; |
| 401 | invocation_args[0].l = rcvr_jobj; |
| 402 | invocation_args[1].l = interface_method_jobj; |
| 403 | invocation_args[2].l = args_jobj; |
| 404 | jobject result = |
| 405 | soa.Env()->CallObjectMethodA(inv_hand, |
| 406 | WellKnownClasses::java_lang_reflect_InvocationHandler_invoke, |
| 407 | invocation_args); |
| 408 | |
| 409 | // Unbox result and handle error conditions. |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 410 | if (LIKELY(!soa.Self()->IsExceptionPending())) { |
| 411 | if (shorty[0] == 'V' || (shorty[0] == 'L' && result == NULL)) { |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 412 | // Do nothing. |
| 413 | return zero; |
| 414 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 415 | mirror::Object* result_ref = soa.Decode<mirror::Object*>(result); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 416 | mirror::Object* rcvr = soa.Decode<mirror::Object*>(rcvr_jobj); |
| 417 | mirror::AbstractMethod* interface_method = |
| 418 | soa.Decode<mirror::AbstractMethod*>(interface_method_jobj); |
| 419 | mirror::Class* result_type = MethodHelper(interface_method).GetReturnType(); |
| 420 | mirror::AbstractMethod* proxy_method; |
| 421 | if (interface_method->GetDeclaringClass()->IsInterface()) { |
| 422 | proxy_method = rcvr->GetClass()->FindVirtualMethodForInterface(interface_method); |
| 423 | } else { |
| 424 | // Proxy dispatch to a method defined in Object. |
| 425 | DCHECK(interface_method->GetDeclaringClass()->IsObjectClass()); |
| 426 | proxy_method = interface_method; |
| 427 | } |
| 428 | ThrowLocation throw_location(rcvr, proxy_method, -1); |
| 429 | JValue result_unboxed; |
| 430 | if (!UnboxPrimitiveForResult(throw_location, result_ref, result_type, result_unboxed)) { |
Ian Rogers | 530f71c | 2013-02-22 23:29:00 -0800 | [diff] [blame] | 431 | DCHECK(soa.Self()->IsExceptionPending()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 432 | return zero; |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 433 | } |
| 434 | return result_unboxed; |
| 435 | } |
| 436 | } else { |
| 437 | // In the case of checked exceptions that aren't declared, the exception must be wrapped by |
| 438 | // a UndeclaredThrowableException. |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 439 | mirror::Throwable* exception = soa.Self()->GetException(NULL); |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 440 | if (exception->IsCheckedException()) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 441 | mirror::Object* rcvr = soa.Decode<mirror::Object*>(rcvr_jobj); |
| 442 | mirror::SynthesizedProxyClass* proxy_class = |
| 443 | down_cast<mirror::SynthesizedProxyClass*>(rcvr->GetClass()); |
| 444 | mirror::AbstractMethod* interface_method = |
| 445 | soa.Decode<mirror::AbstractMethod*>(interface_method_jobj); |
| 446 | mirror::AbstractMethod* proxy_method = |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 447 | rcvr->GetClass()->FindVirtualMethodForInterface(interface_method); |
| 448 | int throws_index = -1; |
| 449 | size_t num_virt_methods = proxy_class->NumVirtualMethods(); |
| 450 | for (size_t i = 0; i < num_virt_methods; i++) { |
| 451 | if (proxy_class->GetVirtualMethod(i) == proxy_method) { |
| 452 | throws_index = i; |
| 453 | break; |
| 454 | } |
| 455 | } |
| 456 | CHECK_NE(throws_index, -1); |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 457 | mirror::ObjectArray<mirror::Class>* declared_exceptions = proxy_class->GetThrows()->Get(throws_index); |
| 458 | mirror::Class* exception_class = exception->GetClass(); |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 459 | bool declares_exception = false; |
| 460 | for (int i = 0; i < declared_exceptions->GetLength() && !declares_exception; i++) { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 461 | mirror::Class* declared_exception = declared_exceptions->Get(i); |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 462 | declares_exception = declared_exception->IsAssignableFrom(exception_class); |
| 463 | } |
| 464 | if (!declares_exception) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 465 | ThrowLocation throw_location(rcvr, proxy_method, -1); |
| 466 | soa.Self()->ThrowNewWrappedException(throw_location, |
| 467 | "Ljava/lang/reflect/UndeclaredThrowableException;", |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame] | 468 | NULL); |
| 469 | } |
| 470 | } |
| 471 | return zero; |
| 472 | } |
| 473 | } |
| 474 | |
Shih-wei Liao | 2d83101 | 2011-09-28 22:06:53 -0700 | [diff] [blame] | 475 | } // namespace art |