1 /* 2 * Copyright (C) 2012 The Android Open Source Project 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 #ifndef ART_RUNTIME_ENTRYPOINTS_QUICK_QUICK_ENTRYPOINTS_H_ 18 #define ART_RUNTIME_ENTRYPOINTS_QUICK_QUICK_ENTRYPOINTS_H_ 19 20 #include <jni.h> 21 22 #include "base/macros.h" 23 #include "base/mutex.h" 24 #include "offsets.h" 25 26 #define QUICK_ENTRYPOINT_OFFSET(ptr_size, x) \ 27 Thread::QuickEntryPointOffset<ptr_size>(OFFSETOF_MEMBER(QuickEntryPoints, x)) 28 29 namespace art { 30 31 namespace mirror { 32 class Array; 33 class Class; 34 template<class MirrorType> class CompressedReference; 35 class Object; 36 } // namespace mirror 37 38 class ArtMethod; 39 template<class MirrorType> class GcRoot; 40 class Thread; 41 42 // Pointers to functions that are called by quick compiler generated code via thread-local storage. 43 struct PACKED(4) QuickEntryPoints { 44 #define ENTRYPOINT_ENUM(name, rettype, ...) rettype ( * p ## name )( __VA_ARGS__ ); 45 #include "quick_entrypoints_list.h" 46 QUICK_ENTRYPOINT_LIST(ENTRYPOINT_ENUM) 47 #undef QUICK_ENTRYPOINT_LIST 48 #undef ENTRYPOINT_ENUM 49 }; 50 51 52 // JNI entrypoints. 53 // TODO: NO_THREAD_SAFETY_ANALYSIS due to different control paths depending on fast JNI. 54 extern uint32_t JniMethodStart(Thread* self) NO_THREAD_SAFETY_ANALYSIS HOT_ATTR; 55 extern uint32_t JniMethodStartSynchronized(jobject to_lock, Thread* self) 56 NO_THREAD_SAFETY_ANALYSIS HOT_ATTR; 57 extern void JniMethodEnd(uint32_t saved_local_ref_cookie, Thread* self) 58 NO_THREAD_SAFETY_ANALYSIS HOT_ATTR; 59 extern void JniMethodEndSynchronized(uint32_t saved_local_ref_cookie, jobject locked, 60 Thread* self) 61 NO_THREAD_SAFETY_ANALYSIS HOT_ATTR; 62 extern mirror::Object* JniMethodEndWithReference(jobject result, uint32_t saved_local_ref_cookie, 63 Thread* self) 64 NO_THREAD_SAFETY_ANALYSIS HOT_ATTR; 65 66 extern mirror::Object* JniMethodEndWithReferenceSynchronized(jobject result, 67 uint32_t saved_local_ref_cookie, 68 jobject locked, Thread* self) 69 NO_THREAD_SAFETY_ANALYSIS HOT_ATTR; 70 71 extern void ReadBarrierJni(mirror::CompressedReference<mirror::Object>* handle_on_stack, 72 Thread* self) 73 NO_THREAD_SAFETY_ANALYSIS HOT_ATTR; 74 75 76 // Read barrier entrypoints. 77 // 78 // Compilers for ARM, ARM64, MIPS, MIPS64 can insert a call to these 79 // functions directly. For x86 and x86-64, compilers need a wrapper 80 // assembly function, to handle mismatch in ABI. 81 82 // Mark the heap reference `obj`. This entry point is used by read 83 // barrier fast path implementations generated by the compiler to mark 84 // an object that is referenced by a field of a gray object. 85 extern "C" mirror::Object* artReadBarrierMark(mirror::Object* obj) 86 SHARED_REQUIRES(Locks::mutator_lock_) HOT_ATTR; 87 88 // Read barrier entrypoint for heap references. 89 // This is the read barrier slow path for instance and static fields 90 // and reference type arrays. 91 extern "C" mirror::Object* artReadBarrierSlow(mirror::Object* ref, 92 mirror::Object* obj, 93 uint32_t offset) 94 SHARED_REQUIRES(Locks::mutator_lock_) HOT_ATTR; 95 96 // Read barrier entrypoint for GC roots. 97 extern "C" mirror::Object* artReadBarrierForRootSlow(GcRoot<mirror::Object>* root) 98 SHARED_REQUIRES(Locks::mutator_lock_) HOT_ATTR; 99 100 } // namespace art 101 102 #endif // ART_RUNTIME_ENTRYPOINTS_QUICK_QUICK_ENTRYPOINTS_H_ 103
