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// Copyright 2014 the V8 project 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 V8_COMPILER_BACKEND_UNWINDING_INFO_WRITER_H_ #define V8_COMPILER_BACKEND_UNWINDING_INFO_WRITER_H_ #include "src/flags/flags.h" #if V8_TARGET_ARCH_ARM #include "src/compiler/backend/arm/unwinding-info-writer-arm.h" #elif V8_TARGET_ARCH_ARM64 #include "src/compiler/backend/arm64/unwinding-info-writer-arm64.h" #elif V8_TARGET_ARCH_X64 #include "src/compiler/backend/x64/unwinding-info-writer-x64.h" #else // Placeholder for unsupported architectures. #include "src/base/logging.h" namespace v8 { namespace internal { class EhFrameWriter; class Zone; namespace compiler { class InstructionBlock; class UnwindingInfoWriter { public: explicit UnwindingInfoWriter(Zone* zone) {} void SetNumberOfInstructionBlocks(int number) { if (FLAG_perf_prof_unwinding_info) UNIMPLEMENTED(); } void BeginInstructionBlock(int pc_offset, const InstructionBlock* block) { if (FLAG_perf_prof_unwinding_info) UNIMPLEMENTED(); } void EndInstructionBlock(const InstructionBlock* block) { if (FLAG_perf_prof_unwinding_info) UNIMPLEMENTED(); } void Finish(int code_size) {} EhFrameWriter* eh_frame_writer() { return nullptr; } }; } // namespace compiler } // namespace internal } // namespace v8 #endif #endif // V8_COMPILER_BACKEND_UNWINDING_INFO_WRITER_H_