Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -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 |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -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 | |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame^] | 17 | #include "argument_visitor.h" |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 18 | #include "object.h" |
| 19 | #include "object_utils.h" |
| 20 | #include "reflection.h" |
TDYa127 | 5bb8601 | 2012-04-11 05:57:28 -0700 | [diff] [blame] | 21 | #include "runtime_support.h" |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 22 | #include "scoped_thread_state_change.h" |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 23 | #include "thread.h" |
Elliott Hughes | eac7667 | 2012-05-24 21:56:51 -0700 | [diff] [blame] | 24 | #include "well_known_classes.h" |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 25 | |
| 26 | #include "ScopedLocalRef.h" |
| 27 | |
| 28 | namespace art { |
| 29 | |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame^] | 30 | // Visits arguments on the stack placing them into the args vector, Object* arguments are converted |
| 31 | // to jobjects. |
| 32 | class BuildArgumentVisitor : public ArgumentVisitor { |
| 33 | public: |
| 34 | BuildArgumentVisitor(MethodHelper& caller_mh, AbstractMethod** sp, |
| 35 | ScopedObjectAccessUnchecked& soa, std::vector<jvalue>& args) : |
| 36 | ArgumentVisitor(caller_mh, sp), soa_(soa), args_(args) {} |
| 37 | |
| 38 | virtual void Visit() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 39 | jvalue val; |
| 40 | Primitive::Type type = GetParamPrimitiveType(); |
| 41 | switch (type) { |
| 42 | case Primitive::kPrimNot: { |
| 43 | Object* obj = *reinterpret_cast<Object**>(GetParamAddress()); |
| 44 | val.l = soa_.AddLocalReference<jobject>(obj); |
| 45 | break; |
| 46 | } |
| 47 | case Primitive::kPrimLong: // Fall-through. |
| 48 | case Primitive::kPrimDouble: |
| 49 | if (IsSplitLongOrDouble()) { |
| 50 | val.j = ReadSplitLongParam(); |
| 51 | } else { |
| 52 | val.j = *reinterpret_cast<jlong*>(GetParamAddress()); |
| 53 | } |
| 54 | break; |
| 55 | case Primitive::kPrimBoolean: |
| 56 | case Primitive::kPrimByte: |
| 57 | case Primitive::kPrimChar: |
| 58 | case Primitive::kPrimShort: |
| 59 | case Primitive::kPrimInt: |
| 60 | case Primitive::kPrimFloat: |
| 61 | val.i = *reinterpret_cast<jint*>(GetParamAddress()); |
| 62 | break; |
| 63 | case Primitive::kPrimVoid: |
| 64 | LOG(FATAL) << "UNREACHABLE"; |
| 65 | val.j = 0; |
| 66 | break; |
| 67 | } |
| 68 | args_.push_back(val); |
| 69 | } |
| 70 | |
| 71 | private: |
| 72 | ScopedObjectAccessUnchecked& soa_; |
| 73 | std::vector<jvalue>& args_; |
| 74 | }; |
| 75 | |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 76 | // Handler for invocation on proxy methods. On entry a frame will exist for the proxy object method |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame^] | 77 | // which is responsible for recording callee save registers. We explicitly place into jobjects the |
| 78 | // incoming reference arguments (so they survive GC). We invoke the invocation handler, which is a |
| 79 | // field within the proxy object, which will box the primitive arguments and deal with error cases. |
| 80 | extern "C" uint64_t artProxyInvokeHandler(AbstractMethod* proxy_method, Object* receiver, |
| 81 | Thread* self, AbstractMethod** sp) |
Ian Rogers | b726dcb | 2012-09-05 08:57:23 -0700 | [diff] [blame] | 82 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | f58dffd | 2013-01-13 09:25:49 -0800 | [diff] [blame] | 83 | // Ensure we don't get thread suspension until the object arguments are safely in jobjects. |
| 84 | const char* old_cause = |
| 85 | self->StartAssertNoThreadSuspension("Adding to IRT proxy object arguments"); |
| 86 | // Register the top of the managed stack, making stack crawlable. |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame^] | 87 | DCHECK_EQ(*sp, proxy_method); |
| 88 | self->SetTopOfStack(sp, 0); |
| 89 | DCHECK_EQ(proxy_method->GetFrameSizeInBytes(), |
| 90 | Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs)->GetFrameSizeInBytes()); |
Ian Rogers | f58dffd | 2013-01-13 09:25:49 -0800 | [diff] [blame] | 91 | self->VerifyStack(); |
| 92 | // Start new JNI local reference state. |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 93 | JNIEnvExt* env = self->GetJniEnv(); |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 94 | ScopedObjectAccessUnchecked soa(env); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 95 | ScopedJniEnvLocalRefState env_state(env); |
Ian Rogers | f58dffd | 2013-01-13 09:25:49 -0800 | [diff] [blame] | 96 | // Create local ref. copies of proxy method and the receiver. |
Ian Rogers | 00f7d0e | 2012-07-19 15:28:27 -0700 | [diff] [blame] | 97 | jobject rcvr_jobj = soa.AddLocalReference<jobject>(receiver); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 98 | |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame^] | 99 | // Placing arguments into args vector and remove the receiver. |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 100 | MethodHelper proxy_mh(proxy_method); |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame^] | 101 | std::vector<jvalue> args; |
| 102 | BuildArgumentVisitor local_ref_visitor(proxy_mh, sp, soa, args); |
| 103 | local_ref_visitor.VisitArguments(); |
| 104 | args.erase(args.begin()); |
Ian Rogers | f58dffd | 2013-01-13 09:25:49 -0800 | [diff] [blame] | 105 | |
Ian Rogers | f58dffd | 2013-01-13 09:25:49 -0800 | [diff] [blame] | 106 | // Convert proxy method into expected interface method. |
Mathieu Chartier | 66f1925 | 2012-09-18 08:57:04 -0700 | [diff] [blame] | 107 | AbstractMethod* interface_method = proxy_method->FindOverriddenMethod(); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 108 | DCHECK(interface_method != NULL); |
| 109 | DCHECK(!interface_method->IsProxyMethod()) << PrettyMethod(interface_method); |
Ian Rogers | af6e67a | 2013-01-16 08:38:37 -0800 | [diff] [blame^] | 110 | jobject interface_method_jobj = soa.AddLocalReference<jobject>(interface_method); |
| 111 | |
| 112 | // All naked Object*s should now be in jobjects, so its safe to go into the main invoke code |
| 113 | // that performs allocations. |
| 114 | self->EndAssertNoThreadSuspension(old_cause); |
| 115 | JValue result = InvokeProxyInvocationHandler(soa, proxy_mh.GetShorty(), |
| 116 | rcvr_jobj, interface_method_jobj, args); |
| 117 | return result.GetJ(); |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | } // namespace art |