| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "quick_exception_handler.h" |
| |
| #include "arch/context.h" |
| #include "art_method-inl.h" |
| #include "dex_instruction.h" |
| #include "entrypoints/entrypoint_utils.h" |
| #include "entrypoints/runtime_asm_entrypoints.h" |
| #include "handle_scope-inl.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/class_loader.h" |
| #include "mirror/throwable.h" |
| #include "verifier/method_verifier.h" |
| |
| namespace art { |
| |
| static constexpr bool kDebugExceptionDelivery = false; |
| static constexpr size_t kInvalidFrameDepth = 0xffffffff; |
| |
| QuickExceptionHandler::QuickExceptionHandler(Thread* self, bool is_deoptimization) |
| : self_(self), context_(self->GetLongJumpContext()), is_deoptimization_(is_deoptimization), |
| method_tracing_active_(is_deoptimization || |
| Runtime::Current()->GetInstrumentation()->AreExitStubsInstalled()), |
| handler_quick_frame_(nullptr), handler_quick_frame_pc_(0), handler_method_(nullptr), |
| handler_dex_pc_(0), clear_exception_(false), handler_frame_depth_(kInvalidFrameDepth) { |
| } |
| |
| // Finds catch handler. |
| class CatchBlockStackVisitor FINAL : public StackVisitor { |
| public: |
| CatchBlockStackVisitor(Thread* self, Context* context, Handle<mirror::Throwable>* exception, |
| QuickExceptionHandler* exception_handler) |
| SHARED_REQUIRES(Locks::mutator_lock_) |
| : StackVisitor(self, context, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
| exception_(exception), |
| exception_handler_(exception_handler) { |
| } |
| |
| bool VisitFrame() OVERRIDE SHARED_REQUIRES(Locks::mutator_lock_) { |
| ArtMethod* method = GetMethod(); |
| exception_handler_->SetHandlerFrameDepth(GetFrameDepth()); |
| if (method == nullptr) { |
| // This is the upcall, we remember the frame and last pc so that we may long jump to them. |
| exception_handler_->SetHandlerQuickFramePc(GetCurrentQuickFramePc()); |
| exception_handler_->SetHandlerQuickFrame(GetCurrentQuickFrame()); |
| uint32_t next_dex_pc; |
| ArtMethod* next_art_method; |
| bool has_next = GetNextMethodAndDexPc(&next_art_method, &next_dex_pc); |
| // Report the method that did the down call as the handler. |
| exception_handler_->SetHandlerDexPc(next_dex_pc); |
| exception_handler_->SetHandlerMethod(next_art_method); |
| if (!has_next) { |
| // No next method? Check exception handler is set up for the unhandled exception handler |
| // case. |
| DCHECK_EQ(0U, exception_handler_->GetHandlerDexPc()); |
| DCHECK(nullptr == exception_handler_->GetHandlerMethod()); |
| } |
| return false; // End stack walk. |
| } |
| if (method->IsRuntimeMethod()) { |
| // Ignore callee save method. |
| DCHECK(method->IsCalleeSaveMethod()); |
| return true; |
| } |
| return HandleTryItems(method); |
| } |
| |
| private: |
| bool HandleTryItems(ArtMethod* method) |
| SHARED_REQUIRES(Locks::mutator_lock_) { |
| uint32_t dex_pc = DexFile::kDexNoIndex; |
| if (!method->IsNative()) { |
| dex_pc = GetDexPc(); |
| } |
| if (dex_pc != DexFile::kDexNoIndex) { |
| bool clear_exception = false; |
| StackHandleScope<1> hs(GetThread()); |
| Handle<mirror::Class> to_find(hs.NewHandle((*exception_)->GetClass())); |
| uint32_t found_dex_pc = method->FindCatchBlock(to_find, dex_pc, &clear_exception); |
| exception_handler_->SetClearException(clear_exception); |
| if (found_dex_pc != DexFile::kDexNoIndex) { |
| exception_handler_->SetHandlerMethod(method); |
| exception_handler_->SetHandlerDexPc(found_dex_pc); |
| exception_handler_->SetHandlerQuickFramePc( |
| method->ToNativeQuickPc(found_dex_pc, /* is_catch_handler */ true)); |
| exception_handler_->SetHandlerQuickFrame(GetCurrentQuickFrame()); |
| return false; // End stack walk. |
| } else if (UNLIKELY(GetThread()->HasDebuggerShadowFrames())) { |
| // We are going to unwind this frame. Did we prepare a shadow frame for debugging? |
| size_t frame_id = GetFrameId(); |
| ShadowFrame* frame = GetThread()->FindDebuggerShadowFrame(frame_id); |
| if (frame != nullptr) { |
| // We will not execute this shadow frame so we can safely deallocate it. |
| GetThread()->RemoveDebuggerShadowFrameMapping(frame_id); |
| ShadowFrame::DeleteDeoptimizedFrame(frame); |
| } |
| } |
| } |
| return true; // Continue stack walk. |
| } |
| |
| // The exception we're looking for the catch block of. |
| Handle<mirror::Throwable>* exception_; |
| // The quick exception handler we're visiting for. |
| QuickExceptionHandler* const exception_handler_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CatchBlockStackVisitor); |
| }; |
| |
| void QuickExceptionHandler::FindCatch(mirror::Throwable* exception) { |
| DCHECK(!is_deoptimization_); |
| if (kDebugExceptionDelivery) { |
| mirror::String* msg = exception->GetDetailMessage(); |
| std::string str_msg(msg != nullptr ? msg->ToModifiedUtf8() : ""); |
| self_->DumpStack(LOG(INFO) << "Delivering exception: " << PrettyTypeOf(exception) |
| << ": " << str_msg << "\n"); |
| } |
| StackHandleScope<1> hs(self_); |
| Handle<mirror::Throwable> exception_ref(hs.NewHandle(exception)); |
| |
| // Walk the stack to find catch handler. |
| CatchBlockStackVisitor visitor(self_, context_, &exception_ref, this); |
| visitor.WalkStack(true); |
| |
| if (kDebugExceptionDelivery) { |
| if (*handler_quick_frame_ == nullptr) { |
| LOG(INFO) << "Handler is upcall"; |
| } |
| if (handler_method_ != nullptr) { |
| const DexFile& dex_file = *handler_method_->GetDeclaringClass()->GetDexCache()->GetDexFile(); |
| int line_number = dex_file.GetLineNumFromPC(handler_method_, handler_dex_pc_); |
| LOG(INFO) << "Handler: " << PrettyMethod(handler_method_) << " (line: " << line_number << ")"; |
| } |
| } |
| if (clear_exception_) { |
| // Exception was cleared as part of delivery. |
| DCHECK(!self_->IsExceptionPending()); |
| } else { |
| // Put exception back in root set with clear throw location. |
| self_->SetException(exception_ref.Get()); |
| } |
| // If the handler is in optimized code, we need to set the catch environment. |
| if (*handler_quick_frame_ != nullptr && |
| handler_method_ != nullptr && |
| handler_method_->IsOptimized(sizeof(void*))) { |
| SetCatchEnvironmentForOptimizedHandler(&visitor); |
| } |
| } |
| |
| static VRegKind ToVRegKind(DexRegisterLocation::Kind kind) { |
| // Slightly hacky since we cannot map DexRegisterLocationKind and VRegKind |
| // one to one. However, StackVisitor::GetVRegFromOptimizedCode only needs to |
| // distinguish between core/FPU registers and low/high bits on 64-bit. |
| switch (kind) { |
| case DexRegisterLocation::Kind::kConstant: |
| case DexRegisterLocation::Kind::kInStack: |
| // VRegKind is ignored. |
| return VRegKind::kUndefined; |
| |
| case DexRegisterLocation::Kind::kInRegister: |
| // Selects core register. For 64-bit registers, selects low 32 bits. |
| return VRegKind::kLongLoVReg; |
| |
| case DexRegisterLocation::Kind::kInRegisterHigh: |
| // Selects core register. For 64-bit registers, selects high 32 bits. |
| return VRegKind::kLongHiVReg; |
| |
| case DexRegisterLocation::Kind::kInFpuRegister: |
| // Selects FPU register. For 64-bit registers, selects low 32 bits. |
| return VRegKind::kDoubleLoVReg; |
| |
| case DexRegisterLocation::Kind::kInFpuRegisterHigh: |
| // Selects FPU register. For 64-bit registers, selects high 32 bits. |
| return VRegKind::kDoubleHiVReg; |
| |
| default: |
| LOG(FATAL) << "Unexpected vreg location " |
| << DexRegisterLocation::PrettyDescriptor(kind); |
| UNREACHABLE(); |
| } |
| } |
| |
| void QuickExceptionHandler::SetCatchEnvironmentForOptimizedHandler(StackVisitor* stack_visitor) { |
| DCHECK(!is_deoptimization_); |
| DCHECK(*handler_quick_frame_ != nullptr) << "Method should not be called on upcall exceptions"; |
| DCHECK(handler_method_ != nullptr && handler_method_->IsOptimized(sizeof(void*))); |
| |
| if (kDebugExceptionDelivery) { |
| self_->DumpStack(LOG(INFO) << "Setting catch phis: "); |
| } |
| |
| const size_t number_of_vregs = handler_method_->GetCodeItem()->registers_size_; |
| CodeInfo code_info = handler_method_->GetOptimizedCodeInfo(); |
| StackMapEncoding encoding = code_info.ExtractEncoding(); |
| |
| // Find stack map of the throwing instruction. |
| StackMap throw_stack_map = |
| code_info.GetStackMapForNativePcOffset(stack_visitor->GetNativePcOffset(), encoding); |
| DCHECK(throw_stack_map.IsValid()); |
| DexRegisterMap throw_vreg_map = |
| code_info.GetDexRegisterMapOf(throw_stack_map, encoding, number_of_vregs); |
| |
| // Find stack map of the catch block. |
| StackMap catch_stack_map = code_info.GetCatchStackMapForDexPc(GetHandlerDexPc(), encoding); |
| DCHECK(catch_stack_map.IsValid()); |
| DexRegisterMap catch_vreg_map = |
| code_info.GetDexRegisterMapOf(catch_stack_map, encoding, number_of_vregs); |
| |
| // Copy values between them. |
| for (uint16_t vreg = 0; vreg < number_of_vregs; ++vreg) { |
| DexRegisterLocation::Kind catch_location = |
| catch_vreg_map.GetLocationKind(vreg, number_of_vregs, code_info, encoding); |
| if (catch_location == DexRegisterLocation::Kind::kNone) { |
| continue; |
| } |
| DCHECK(catch_location == DexRegisterLocation::Kind::kInStack); |
| |
| // Get vreg value from its current location. |
| uint32_t vreg_value; |
| VRegKind vreg_kind = ToVRegKind(throw_vreg_map.GetLocationKind(vreg, |
| number_of_vregs, |
| code_info, |
| encoding)); |
| bool get_vreg_success = stack_visitor->GetVReg(stack_visitor->GetMethod(), |
| vreg, |
| vreg_kind, |
| &vreg_value); |
| CHECK(get_vreg_success) << "VReg " << vreg << " was optimized out (" |
| << "method=" << PrettyMethod(stack_visitor->GetMethod()) << ", " |
| << "dex_pc=" << stack_visitor->GetDexPc() << ", " |
| << "native_pc_offset=" << stack_visitor->GetNativePcOffset() << ")"; |
| |
| // Copy value to the catch phi's stack slot. |
| int32_t slot_offset = catch_vreg_map.GetStackOffsetInBytes(vreg, |
| number_of_vregs, |
| code_info, |
| encoding); |
| ArtMethod** frame_top = stack_visitor->GetCurrentQuickFrame(); |
| uint8_t* slot_address = reinterpret_cast<uint8_t*>(frame_top) + slot_offset; |
| uint32_t* slot_ptr = reinterpret_cast<uint32_t*>(slot_address); |
| *slot_ptr = vreg_value; |
| } |
| } |
| |
| // Prepares deoptimization. |
| class DeoptimizeStackVisitor FINAL : public StackVisitor { |
| public: |
| DeoptimizeStackVisitor(Thread* self, Context* context, QuickExceptionHandler* exception_handler) |
| SHARED_REQUIRES(Locks::mutator_lock_) |
| : StackVisitor(self, context, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
| exception_handler_(exception_handler), |
| prev_shadow_frame_(nullptr), |
| stacked_shadow_frame_pushed_(false) { |
| } |
| |
| bool VisitFrame() OVERRIDE SHARED_REQUIRES(Locks::mutator_lock_) { |
| exception_handler_->SetHandlerFrameDepth(GetFrameDepth()); |
| ArtMethod* method = GetMethod(); |
| if (method == nullptr) { |
| // This is the upcall, we remember the frame and last pc so that we may long jump to them. |
| exception_handler_->SetHandlerQuickFramePc(GetCurrentQuickFramePc()); |
| exception_handler_->SetHandlerQuickFrame(GetCurrentQuickFrame()); |
| if (!stacked_shadow_frame_pushed_) { |
| // In case there is no deoptimized shadow frame for this upcall, we still |
| // need to push a nullptr to the stack since there is always a matching pop after |
| // the long jump. |
| GetThread()->PushStackedShadowFrame(nullptr, |
| StackedShadowFrameType::kDeoptimizationShadowFrame); |
| stacked_shadow_frame_pushed_ = true; |
| } |
| return false; // End stack walk. |
| } else if (method->IsRuntimeMethod()) { |
| // Ignore callee save method. |
| DCHECK(method->IsCalleeSaveMethod()); |
| return true; |
| } else if (method->IsNative()) { |
| // If we return from JNI with a pending exception and want to deoptimize, we need to skip |
| // the native method. |
| // The top method is a runtime method, the native method comes next. |
| CHECK_EQ(GetFrameDepth(), 1U); |
| return true; |
| } else { |
| return HandleDeoptimization(method); |
| } |
| } |
| |
| private: |
| static VRegKind GetVRegKind(uint16_t reg, const std::vector<int32_t>& kinds) { |
| return static_cast<VRegKind>(kinds.at(reg * 2)); |
| } |
| |
| bool HandleDeoptimization(ArtMethod* m) SHARED_REQUIRES(Locks::mutator_lock_) { |
| const DexFile::CodeItem* code_item = m->GetCodeItem(); |
| CHECK(code_item != nullptr) << "No code item for " << PrettyMethod(m); |
| uint16_t num_regs = code_item->registers_size_; |
| uint32_t dex_pc = GetDexPc(); |
| StackHandleScope<2> hs(GetThread()); // Dex cache, class loader and method. |
| mirror::Class* declaring_class = m->GetDeclaringClass(); |
| Handle<mirror::DexCache> h_dex_cache(hs.NewHandle(declaring_class->GetDexCache())); |
| Handle<mirror::ClassLoader> h_class_loader(hs.NewHandle(declaring_class->GetClassLoader())); |
| verifier::MethodVerifier verifier(GetThread(), h_dex_cache->GetDexFile(), h_dex_cache, |
| h_class_loader, &m->GetClassDef(), code_item, |
| m->GetDexMethodIndex(), m, m->GetAccessFlags(), true, true, |
| true, true); |
| bool verifier_success = verifier.Verify(); |
| CHECK(verifier_success) << PrettyMethod(m); |
| // Check if a shadow frame already exists for debugger's set-local-value purpose. |
| const size_t frame_id = GetFrameId(); |
| ShadowFrame* new_frame = GetThread()->FindDebuggerShadowFrame(frame_id); |
| const bool* updated_vregs; |
| if (new_frame == nullptr) { |
| new_frame = ShadowFrame::CreateDeoptimizedFrame(num_regs, nullptr, m, dex_pc); |
| updated_vregs = nullptr; |
| } else { |
| updated_vregs = GetThread()->GetUpdatedVRegFlags(frame_id); |
| DCHECK(updated_vregs != nullptr); |
| } |
| { |
| ScopedStackedShadowFramePusher pusher(GetThread(), new_frame, |
| StackedShadowFrameType::kShadowFrameUnderConstruction); |
| const std::vector<int32_t> kinds(verifier.DescribeVRegs(dex_pc)); |
| |
| // Markers for dead values, used when the verifier knows a Dex register is undefined, |
| // or when the compiler knows the register has not been initialized, or is not used |
| // anymore in the method. |
| static constexpr uint32_t kDeadValue = 0xEBADDE09; |
| static constexpr uint64_t kLongDeadValue = 0xEBADDE09EBADDE09; |
| for (uint16_t reg = 0; reg < num_regs; ++reg) { |
| if (updated_vregs != nullptr && updated_vregs[reg]) { |
| // Keep the value set by debugger. |
| continue; |
| } |
| VRegKind kind = GetVRegKind(reg, kinds); |
| switch (kind) { |
| case kUndefined: |
| new_frame->SetVReg(reg, kDeadValue); |
| break; |
| case kConstant: |
| new_frame->SetVReg(reg, kinds.at((reg * 2) + 1)); |
| break; |
| case kReferenceVReg: { |
| uint32_t value = 0; |
| // Check IsReferenceVReg in case the compiled GC map doesn't agree with the verifier. |
| // We don't want to copy a stale reference into the shadow frame as a reference. |
| // b/20736048 |
| if (GetVReg(m, reg, kind, &value) && IsReferenceVReg(m, reg)) { |
| new_frame->SetVRegReference(reg, reinterpret_cast<mirror::Object*>(value)); |
| } else { |
| new_frame->SetVReg(reg, kDeadValue); |
| } |
| break; |
| } |
| case kLongLoVReg: |
| if (GetVRegKind(reg + 1, kinds) == kLongHiVReg) { |
| // Treat it as a "long" register pair. |
| uint64_t value = 0; |
| if (GetVRegPair(m, reg, kLongLoVReg, kLongHiVReg, &value)) { |
| new_frame->SetVRegLong(reg, value); |
| } else { |
| new_frame->SetVRegLong(reg, kLongDeadValue); |
| } |
| } else { |
| uint32_t value = 0; |
| if (GetVReg(m, reg, kind, &value)) { |
| new_frame->SetVReg(reg, value); |
| } else { |
| new_frame->SetVReg(reg, kDeadValue); |
| } |
| } |
| break; |
| case kLongHiVReg: |
| if (GetVRegKind(reg - 1, kinds) == kLongLoVReg) { |
| // Nothing to do: we treated it as a "long" register pair. |
| } else { |
| uint32_t value = 0; |
| if (GetVReg(m, reg, kind, &value)) { |
| new_frame->SetVReg(reg, value); |
| } else { |
| new_frame->SetVReg(reg, kDeadValue); |
| } |
| } |
| break; |
| case kDoubleLoVReg: |
| if (GetVRegKind(reg + 1, kinds) == kDoubleHiVReg) { |
| uint64_t value = 0; |
| if (GetVRegPair(m, reg, kDoubleLoVReg, kDoubleHiVReg, &value)) { |
| // Treat it as a "double" register pair. |
| new_frame->SetVRegLong(reg, value); |
| } else { |
| new_frame->SetVRegLong(reg, kLongDeadValue); |
| } |
| } else { |
| uint32_t value = 0; |
| if (GetVReg(m, reg, kind, &value)) { |
| new_frame->SetVReg(reg, value); |
| } else { |
| new_frame->SetVReg(reg, kDeadValue); |
| } |
| } |
| break; |
| case kDoubleHiVReg: |
| if (GetVRegKind(reg - 1, kinds) == kDoubleLoVReg) { |
| // Nothing to do: we treated it as a "double" register pair. |
| } else { |
| uint32_t value = 0; |
| if (GetVReg(m, reg, kind, &value)) { |
| new_frame->SetVReg(reg, value); |
| } else { |
| new_frame->SetVReg(reg, kDeadValue); |
| } |
| } |
| break; |
| default: |
| uint32_t value = 0; |
| if (GetVReg(m, reg, kind, &value)) { |
| new_frame->SetVReg(reg, value); |
| } else { |
| new_frame->SetVReg(reg, kDeadValue); |
| } |
| break; |
| } |
| } |
| } |
| if (updated_vregs != nullptr) { |
| // Calling Thread::RemoveDebuggerShadowFrameMapping will also delete the updated_vregs |
| // array so this must come after we processed the frame. |
| GetThread()->RemoveDebuggerShadowFrameMapping(frame_id); |
| DCHECK(GetThread()->FindDebuggerShadowFrame(frame_id) == nullptr); |
| } |
| if (prev_shadow_frame_ != nullptr) { |
| prev_shadow_frame_->SetLink(new_frame); |
| } else { |
| // Will be popped after the long jump after DeoptimizeStack(), |
| // right before interpreter::EnterInterpreterFromDeoptimize(). |
| stacked_shadow_frame_pushed_ = true; |
| GetThread()->PushStackedShadowFrame(new_frame, |
| StackedShadowFrameType::kDeoptimizationShadowFrame); |
| } |
| prev_shadow_frame_ = new_frame; |
| return true; |
| } |
| |
| QuickExceptionHandler* const exception_handler_; |
| ShadowFrame* prev_shadow_frame_; |
| bool stacked_shadow_frame_pushed_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DeoptimizeStackVisitor); |
| }; |
| |
| void QuickExceptionHandler::DeoptimizeStack() { |
| DCHECK(is_deoptimization_); |
| if (kDebugExceptionDelivery) { |
| self_->DumpStack(LOG(INFO) << "Deoptimizing: "); |
| } |
| |
| DeoptimizeStackVisitor visitor(self_, context_, this); |
| visitor.WalkStack(true); |
| |
| // Restore deoptimization exception |
| self_->SetException(Thread::GetDeoptimizationException()); |
| } |
| |
| // Unwinds all instrumentation stack frame prior to catch handler or upcall. |
| class InstrumentationStackVisitor : public StackVisitor { |
| public: |
| InstrumentationStackVisitor(Thread* self, size_t frame_depth) |
| SHARED_REQUIRES(Locks::mutator_lock_) |
| : StackVisitor(self, nullptr, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
| frame_depth_(frame_depth), |
| instrumentation_frames_to_pop_(0) { |
| CHECK_NE(frame_depth_, kInvalidFrameDepth); |
| } |
| |
| bool VisitFrame() SHARED_REQUIRES(Locks::mutator_lock_) { |
| size_t current_frame_depth = GetFrameDepth(); |
| if (current_frame_depth < frame_depth_) { |
| CHECK(GetMethod() != nullptr); |
| if (UNLIKELY(reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc()) == GetReturnPc())) { |
| if (!IsInInlinedFrame()) { |
| // We do not count inlined frames, because we do not instrument them. The reason we |
| // include them in the stack walking is the check against `frame_depth_`, which is |
| // given to us by a visitor that visits inlined frames. |
| ++instrumentation_frames_to_pop_; |
| } |
| } |
| return true; |
| } else { |
| // We reached the frame of the catch handler or the upcall. |
| return false; |
| } |
| } |
| |
| size_t GetInstrumentationFramesToPop() const { |
| return instrumentation_frames_to_pop_; |
| } |
| |
| private: |
| const size_t frame_depth_; |
| size_t instrumentation_frames_to_pop_; |
| |
| DISALLOW_COPY_AND_ASSIGN(InstrumentationStackVisitor); |
| }; |
| |
| void QuickExceptionHandler::UpdateInstrumentationStack() { |
| if (method_tracing_active_) { |
| InstrumentationStackVisitor visitor(self_, handler_frame_depth_); |
| visitor.WalkStack(true); |
| |
| size_t instrumentation_frames_to_pop = visitor.GetInstrumentationFramesToPop(); |
| instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); |
| for (size_t i = 0; i < instrumentation_frames_to_pop; ++i) { |
| instrumentation->PopMethodForUnwind(self_, is_deoptimization_); |
| } |
| } |
| } |
| |
| void QuickExceptionHandler::DoLongJump() { |
| // Place context back on thread so it will be available when we continue. |
| self_->ReleaseLongJumpContext(context_); |
| context_->SetSP(reinterpret_cast<uintptr_t>(handler_quick_frame_)); |
| CHECK_NE(handler_quick_frame_pc_, 0u); |
| context_->SetPC(handler_quick_frame_pc_); |
| context_->SmashCallerSaves(); |
| context_->DoLongJump(); |
| UNREACHABLE(); |
| } |
| |
| } // namespace art |