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1//===- OutputSegment.h ------------------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLD_WASM_OUTPUT_SEGMENT_H10#define LLD_WASM_OUTPUT_SEGMENT_H11 12#include "InputChunks.h"13#include "lld/Common/ErrorHandler.h"14#include "llvm/Object/Wasm.h"15 16namespace lld::wasm {17 18class InputSegment;19 20class OutputSegment {21public:22 OutputSegment(StringRef n) : name(n) {}23 24 void addInputSegment(InputChunk *inSeg);25 void finalizeInputSegments();26 // In most circumstances BSS segments don't need to be written27 // to the output binary. However if the memory is imported, and28 // we can't use memory.fill during startup (due to lack of bulk29 // memory feature) then we include BSS segments verbatim.30 bool requiredInBinary() const { return !isBss || ctx.emitBssSegments; }31 32 bool isTLS() const { return name == ".tdata"; }33 34 StringRef name;35 bool isBss = false;36 uint32_t index = 0;37 uint32_t linkingFlags = 0;38 uint32_t initFlags = 0;39 uint32_t sectionOffset = 0;40 uint32_t alignment = 0;41 uint64_t startVA = 0;42 std::vector<InputChunk *> inputSegments;43 44 // Sum of the size of the all the input segments45 uint32_t size = 0;46 47 // Segment header48 std::string header;49};50 51} // namespace lld::wasm52 53#endif // LLD_WASM_OUTPUT_SEGMENT_H54