// Copyright 2019 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef BASE_PROFILER_CHROME_UNWINDER_ANDROID_H_ #define BASE_PROFILER_CHROME_UNWINDER_ANDROID_H_ #include #include "base/memory/raw_ptr.h" #include "base/profiler/unwinder.h" #include "base/base_export.h" #include "base/profiler/arm_cfi_table.h" #include "base/profiler/module_cache.h" #include "base/profiler/register_context.h" namespace base { // Chrome unwinder implementation for Android, using ArmCfiTable. class BASE_EXPORT ChromeUnwinderAndroid : public Unwinder { public: ChromeUnwinderAndroid(const ArmCFITable* cfi_table, uintptr_t chrome_module_base_address); ~ChromeUnwinderAndroid() override; ChromeUnwinderAndroid(const ChromeUnwinderAndroid&) = delete; ChromeUnwinderAndroid& operator=(const ChromeUnwinderAndroid&) = delete; // Unwinder: bool CanUnwindFrom(const Frame& current_frame) const override; UnwindResult TryUnwind(RegisterContext* thread_context, uintptr_t stack_top, std::vector* stack) const override; static bool StepForTesting(RegisterContext* thread_context, uintptr_t stack_top, const ArmCFITable::FrameEntry& entry) { return Step(thread_context, stack_top, entry); } private: static bool Step(RegisterContext* thread_context, uintptr_t stack_top, const ArmCFITable::FrameEntry& entry); // Fallback setp that attempts to use lr as return address. static bool StepUsingLrRegister(RegisterContext* thread_context, uintptr_t stack_top); raw_ptr cfi_table_; const uintptr_t chrome_module_base_address_; }; } // namespace base #endif // BASE_PROFILER_CHROME_UNWINDER_ANDROID_H_