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c44c8db652
Summary: This patch implements copying some load commands that appear in executables/shared libraries such as the indirect symbol table. I don't add tests intentionally because this patch is incomplete: we need a layout algorithm for executables/shared libraries. I'll submit it as a separate patch with tests. Reviewers: alexshap, rupprecht, jhenderson, compnerd Reviewed By: alexshap Subscribers: abrachet, mgorny, mgrang, MaskRay, mtrent, jakehehrlich, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D63395 llvm-svn: 369298
51 lines
1.5 KiB
C++
51 lines
1.5 KiB
C++
//===- MachOLayoutBuilder.h -------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_OBJCOPY_MACHO_MACHOLAYOUTBUILDER_H
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#define LLVM_OBJCOPY_MACHO_MACHOLAYOUTBUILDER_H
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#include "MachOObjcopy.h"
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#include "Object.h"
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namespace llvm {
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namespace objcopy {
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namespace macho {
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class MachOLayoutBuilder {
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Object &O;
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bool Is64Bit;
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uint64_t PageSize;
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// Points to the __LINKEDIT segment if it exists.
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MachO::macho_load_command *LinkEditLoadCommand = nullptr;
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StringTableBuilder StrTableBuilder{StringTableBuilder::MachO};
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uint32_t computeSizeOfCmds() const;
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void constructStringTable();
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void updateSymbolIndexes();
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void updateDySymTab(MachO::macho_load_command &MLC);
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uint64_t layoutSegments();
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uint64_t layoutRelocations(uint64_t Offset);
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Error layoutTail(uint64_t Offset);
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public:
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MachOLayoutBuilder(Object &O, bool Is64Bit, uint64_t PageSize)
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: O(O), Is64Bit(Is64Bit), PageSize(PageSize) {}
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// Recomputes and updates fields in the given object such as file offsets.
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Error layout();
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StringTableBuilder &getStringTableBuilder() { return StrTableBuilder; }
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};
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} // end namespace macho
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} // end namespace objcopy
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} // end namespace llvm
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#endif // LLVM_OBJCOPY_MACHO_MACHOLAYOUTBUILDER_H
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