f56205bb8e
The ELF writer creates a invalid binary for few cases with large filesize and memory size for segments. This patch addresses the functionality and updates the test. This patch also cleans up parts of the ELF writer for future enhancements to support Linker scripts. llvm-svn: 221233
60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
//===- lib/ReaderWriter/ELF/Layout.h --------------------------------------===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLD_READER_WRITER_ELF_LAYOUT_H
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#define LLD_READER_WRITER_ELF_LAYOUT_H
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#include "lld/Core/DefinedAtom.h"
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#include "lld/ReaderWriter/AtomLayout.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Object/ELF.h"
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#include "llvm/Support/Allocator.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ELF.h"
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#include "llvm/Support/ErrorOr.h"
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namespace lld {
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namespace elf {
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/// \brief The ELFLayout is an abstract class for managing the final layout for
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/// the kind of binaries(Shared Libraries / Relocatables / Executables 0
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/// Each architecture (Hexagon, PowerPC, MIPS) would have a concrete
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/// subclass derived from Layout for generating each binary thats
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// needed by the lld linker
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class Layout {
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public:
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typedef uint32_t SectionOrder;
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typedef uint32_t SegmentType;
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typedef uint32_t Flags;
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public:
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/// Return the order the section would appear in the output file
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virtual SectionOrder getSectionOrder(StringRef name, int32_t contentType,
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int32_t contentPerm) = 0;
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/// \brief Append the Atom to the layout and create appropriate sections.
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/// \returns A reference to the atom layout or an error. The atom layout will
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/// be updated as linking progresses.
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virtual ErrorOr<const lld::AtomLayout &> addAtom(const Atom *atom) = 0;
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/// find the Atom Address in the current layout
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virtual bool findAtomAddrByName(StringRef name, uint64_t &addr) = 0;
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/// associates a section to a segment
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virtual void assignSectionsToSegments() = 0;
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/// associates a virtual address to the segment, section, and the atom
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virtual void assignVirtualAddress() = 0;
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public:
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Layout() {}
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virtual ~Layout() { }
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};
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} // end namespace elf
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} // end namespace lld
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#endif
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