diff options
Diffstat (limited to 'runtime/entrypoints/quick')
| -rw-r--r-- | runtime/entrypoints/quick/quick_trampoline_entrypoints.cc | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc index cb816298ad..9db1646f5f 100644 --- a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc +++ b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc @@ -208,6 +208,22 @@ class QuickArgumentVisitor { #endif public: + // Special handling for proxy methods. Proxy methods are instance methods so the + // 'this' object is the 1st argument. They also have the same frame layout as the + // kRefAndArgs runtime method. Since 'this' is a reference, it is located in the + // 1st GPR. + static mirror::Object* GetProxyThisObject(StackReference<mirror::ArtMethod>* sp) + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { + CHECK(sp->AsMirrorPtr()->IsProxyMethod()); + CHECK_EQ(kQuickCalleeSaveFrame_RefAndArgs_FrameSize, sp->AsMirrorPtr()->GetFrameSizeInBytes()); + CHECK_GT(kNumQuickGprArgs, 0u); + constexpr uint32_t kThisGprIndex = 0u; // 'this' is in the 1st GPR. + size_t this_arg_offset = kQuickCalleeSaveFrame_RefAndArgs_Gpr1Offset + + GprIndexToGprOffset(kThisGprIndex); + uint8_t* this_arg_address = reinterpret_cast<uint8_t*>(sp) + this_arg_offset; + return reinterpret_cast<StackReference<mirror::Object>*>(this_arg_address)->AsMirrorPtr(); + } + static mirror::ArtMethod* GetCallingMethod(StackReference<mirror::ArtMethod>* sp) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { DCHECK(sp->AsMirrorPtr()->IsCalleeSaveMethod()); @@ -435,6 +451,13 @@ class QuickArgumentVisitor { bool is_split_long_or_double_; }; +// Returns the 'this' object of a proxy method. This function is only used by StackVisitor. It +// allows to use the QuickArgumentVisitor constants without moving all the code in its own module. +extern "C" mirror::Object* artQuickGetProxyThisObject(StackReference<mirror::ArtMethod>* sp) + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { + return QuickArgumentVisitor::GetProxyThisObject(sp); +} + // Visits arguments on the stack placing them into the shadow frame. class BuildQuickShadowFrameVisitor FINAL : public QuickArgumentVisitor { public: |