chromium/components/zucchini/type_elf.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_ZUCCHINI_TYPE_ELF_H_
#define COMPONENTS_ZUCCHINI_TYPE_ELF_H_

#include <stdint.h>

namespace zucchini {

// Structures and constants taken from linux/elf.h and following identical
// layout. This is used for parsing of Executable and Linkable Format (ELF).
namespace elf {
// Supported by MSVC, g++, and clang++. Ensures no gaps in packing.
#pragma pack(push, 1)

// This header defines various types from the ELF file spec, but no code
// related to using them.

Elf32_Addr;  // Unsigned program address.
Elf32_Half;  // Unsigned medium integer.
Elf32_Off;   // Unsigned file offset.
Elf32_Sword;  // Signed large integer.
Elf32_Word;  // Unsigned large integer.

Elf64_Addr;   // Unsigned program address.
Elf64_Half;   // Unsigned medium integer.
Elf64_Off;    // Unsigned file offset.
Elf64_Sword;   // Signed large integer.
Elf64_Word;   // Unsigned large integer.
Elf64_Sxword;  // Signed extra large integer.
Elf64_Xword;  // Unsigned extra large integer.

// The header at the top of the file.
struct Elf32_Ehdr { … };

struct Elf64_Ehdr { … };

// Identification Indexes in header->e_ident.
enum IdentificationIndex { … };

// Values for header->e_ident[EI_CLASS].
enum FileClass { … };

// Values for header->e_type.
enum FileType { … };

// Values for header->e_machine.
enum MachineArchitecture { … };

// A section header in the section header table.
struct Elf32_Shdr { … };

struct Elf64_Shdr { … };

// Values for the section type field in a section header.
enum sh_type_values { … };

enum sh_flag_masks { … };

struct Elf32_Phdr { … };

struct Elf64_Phdr { … };

// Values for the segment type field in a program segment header.
enum ph_type_values { … };

struct Elf32_Rel { … };

struct Elf64_Rel { … };

struct Elf32_Rela { … };

struct Elf64_Rela { … };

enum elf32_rel_386_type_values { … };

enum elf32_rel_x86_64_type_values { … };

enum elf32_rel_arm_type_values { … };

enum elf64_rel_aarch64_type_values { … };

#pragma pack(pop)

}  // namespace elf
}  // namespace zucchini

#endif  // COMPONENTS_ZUCCHINI_TYPE_ELF_H_