Elfspy/SectionHeader.h

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2018-03-15 19:56:25 +01:00
#ifndef ELFSPY_SECTIONHEADER_H
#define ELFSPY_SECTIONHEADER_H
#include <elf.h>
#include "elfspy/Section.h"
namespace spy
{
class ELFInfo;
class SectionHeader
{
public:
SectionHeader() = default;
const unsigned char* begin() const;
const unsigned char* end() const;
size_t entries() const;
bool operator!() const;
explicit operator bool() const;
template <typename T>
Section<T> as_section() const;
private:
static const Elf_Shdr no_header_;
const unsigned char* data_ = nullptr;
const Elf_Shdr* header_ = &no_header_;
friend class ELFInfo;
SectionHeader(const unsigned char* data, const Elf_Shdr* header);
};
inline SectionHeader::SectionHeader(const unsigned char* data, const Elf_Shdr* header)
:data_(data)
,header_(header)
{
}
inline const unsigned char* SectionHeader::begin() const
{
return data_ + header_->sh_offset;
}
inline const unsigned char* SectionHeader::end() const
{
return begin() + header_->sh_size;
}
inline size_t SectionHeader::entries() const
{
return header_->sh_size / header_->sh_entsize;
}
inline bool SectionHeader::operator!() const
{
return header_ == nullptr;
}
inline SectionHeader::operator bool() const
{
return header_ != nullptr;
}
template <typename T>
inline Section<T> SectionHeader::as_section() const
{
return { data_, header_ };
}
} // namespace spy
#endif