forked from OSchip/llvm-project
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
//===- OutputSection.h ------------------------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLD_MACHO_MERGED_OUTPUT_SECTION_H
|
|
#define LLD_MACHO_MERGED_OUTPUT_SECTION_H
|
|
|
|
#include "InputSection.h"
|
|
#include "OutputSection.h"
|
|
#include "lld/Common/LLVM.h"
|
|
#include "llvm/ADT/MapVector.h"
|
|
|
|
namespace lld {
|
|
namespace macho {
|
|
|
|
// Linking multiple files will inevitably mean resolving sections in different
|
|
// files that are labeled with the same segment and section name. This class
|
|
// contains all such sections and writes the data from each section sequentially
|
|
// in the final binary.
|
|
class MergedOutputSection : public OutputSection {
|
|
public:
|
|
MergedOutputSection(StringRef name) : OutputSection(MergedKind, name) {}
|
|
|
|
const InputSection *firstSection() const { return inputs.front(); }
|
|
const InputSection *lastSection() const { return inputs.back(); }
|
|
|
|
// These accessors will only be valid after finalizing the section
|
|
uint64_t getSize() const override { return size; }
|
|
uint64_t getFileSize() const override { return fileSize; }
|
|
|
|
void mergeInput(InputSection *input);
|
|
void finalize() override;
|
|
|
|
void writeTo(uint8_t *buf) const override;
|
|
|
|
std::vector<InputSection *> inputs;
|
|
|
|
static bool classof(const OutputSection *sec) {
|
|
return sec->kind() == MergedKind;
|
|
}
|
|
|
|
private:
|
|
void mergeFlags(uint32_t inputFlags);
|
|
|
|
size_t size = 0;
|
|
uint64_t fileSize = 0;
|
|
};
|
|
|
|
} // namespace macho
|
|
} // namespace lld
|
|
|
|
#endif
|