elf.h

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#pragma once
#include <cstdint>
#include "be_val.h"

#pragma pack(push, 1)

namespace elf
{

enum Machine : uint32_t /* e_machine */
{
 EM_PPC = 20 /* PowerPC */
};

enum Encoding : uint32_t /* e_encoding */
{
 ELFDATANONE = 0,
 ELFDATA2LSB = 1,
 ELFDATA2MSB = 2
};

enum Class : uint32_t /* e_class */
{
 ELFCLASSNONE = 0,
 ELFCLASS32 = 1,
 ELFCLASS64 = 2
};

enum Version : uint32_t /* e_elf_version */
{
 EV_NONE = 0,
 EV_CURRENT = 1,
};

enum FileType : uint32_t /* e_type */
{
 ET_NONE = 0, /* No file type */
 ET_REL = 1, /* Relocatable file */
 ET_EXEC = 2, /* Executable file */
 ET_DYN = 3, /* Shared object file */
 ET_CORE = 4, /* Core file */
 ET_LOPROC = 0xff00, /* Beginning of processor-specific codes */
 ET_CAFE_RPL = 0xff01, /* Cafe RPL file */
 ET_HIPROC = 0xffff /* Processor-specific */
};

enum EABI : uint32_t /* e_abi */
{
 EABI_CAFE = 0xcafe /* WiiU CafeOS */
};

enum SectionFlags : uint32_t /* sh_flags */
{
 SHF_WRITE = 0x1,
 SHF_ALLOC = 0x2,
 SHF_EXECINSTR = 0x4,
 SHF_DEFLATED = 0x08000000,
 SHF_MASKPROC = 0xF0000000,
};

enum SectionType : uint32_t /* sh_type */
{
 SHT_NULL = 0, /* No associated section (inactive entry). */
 SHT_PROGBITS = 1, /* Program-defined contents. */
 SHT_SYMTAB = 2, /* Symbol table. */
 SHT_STRTAB = 3, /* String table. */
 SHT_RELA = 4, /* Relocation entries; explicit addends. */
 SHT_HASH = 5, /* Symbol hash table. */
 SHT_DYNAMIC = 6, /* Information for dynamic linking. */
 SHT_NOTE = 7, /* Information about the file. */
 SHT_NOBITS = 8, /* Data occupies no space in the file. */
 SHT_REL = 9, /* Relocation entries; no explicit addends. */
 SHT_SHLIB = 10, /* Reserved. */
 SHT_DYNSYM = 11, /* Symbol table. */
 SHT_INIT_ARRAY = 14, /* Pointers to initialization functions. */
 SHT_FINI_ARRAY = 15, /* Pointers to termination functions. */
 SHT_PREINIT_ARRAY = 16, /* Pointers to pre-init functions. */
 SHT_GROUP = 17, /* Section group. */
 SHT_SYMTAB_SHNDX = 18, /* Indices for SHN_XINDEX entries. */
 SHT_LOPROC = 0x70000000, /* Lowest processor arch-specific type. */
 SHT_HIPROC = 0x7fffffff, /* Highest processor arch-specific type. */
 SHT_LOUSER = 0x80000000, /* Lowest type reserved for applications. */
 SHT_RPL_EXPORTS = 0x80000001, /* RPL Exports */
 SHT_RPL_IMPORTS = 0x80000002, /* RPL Imports */
 SHT_RPL_CRCS = 0x80000003, /* RPL CRCs */
 SHT_RPL_FILEINFO = 0x80000004,/* RPL FileInfo */
 SHT_HIUSER = 0xffffffff /* Highest type reserved for applications. */
};

enum SymbolBinding : uint32_t /* st_info >> 4 */
{
 STB_LOCAL = 0, /* Local symbol, not visible outside obj file containing def */
 STB_GLOBAL = 1, /* Global symbol, visible to all object files being combined */
 STB_WEAK = 2, /* Weak symbol, like global but lower-precedence */
 STB_GNU_UNIQUE = 10,
 STB_LOOS = 10, /* Lowest operating system-specific binding type */
 STB_HIOS = 12, /* Highest operating system-specific binding type */
 STB_LOPROC = 13, /* Lowest processor-specific binding type */
 STB_HIPROC = 15 /* Highest processor-specific binding type */
};

enum SymbolType : uint32_t /* st_info & f */
{
 STT_NOTYPE = 0, /* Symbol's type is not specified */
 STT_OBJECT = 1, /* Symbol is a data object (variable, array, etc.) */
 STT_FUNC = 2, /* Symbol is executable code (function, etc.) */
 STT_SECTION = 3, /* Symbol refers to a section */
 STT_FILE = 4, /* Local, absolute symbol that refers to a file */
 STT_COMMON = 5, /* An uninitialized common block */
 STT_TLS = 6, /* Thread local data object */
 STT_LOOS = 7, /* Lowest operating system-specific symbol type */
 STT_HIOS = 8, /* Highest operating system-specific symbol type */
 STT_GNU_IFUNC = 10, /* GNU indirect function */
 STT_LOPROC = 13, /* Lowest processor-specific symbol type */
 STT_HIPROC = 15 /* Highest processor-specific symbol type */
};

enum SectionIndex : uint16_t /* st_shndx */
{
 SHN_UNDEF = 0, /* Undefined */
 SHN_LORESERVE = 0xff00, /* Reserved range */
 SHN_ABS = 0xfff1, /* Absolute symbols */
 SHN_COMMON = 0xfff2, /* Common symbols */
 SHN_XINDEX = 0xffff, /* Escape -- index stored elsewhere */
 SHN_HIRESERVE = 0xffff
};

enum RelocationType : uint32_t /* r_info & 0xff */
{
 R_PPC_NONE = 0,
 R_PPC_ADDR32 = 1,
 R_PPC_ADDR24 = 2,
 R_PPC_ADDR16 = 3,
 R_PPC_ADDR16_LO = 4,
 R_PPC_ADDR16_HI = 5,
 R_PPC_ADDR16_HA = 6,
 R_PPC_ADDR14 = 7,
 R_PPC_ADDR14_BRTAKEN = 8,
 R_PPC_ADDR14_BRNTAKEN = 9,
 R_PPC_REL24 = 10,
 R_PPC_REL14 = 11,
 R_PPC_REL14_BRTAKEN = 12,
 R_PPC_REL14_BRNTAKEN = 13,
 R_PPC_GOT16 = 14,
 R_PPC_GOT16_LO = 15,
 R_PPC_GOT16_HI = 16,
 R_PPC_GOT16_HA = 17,
 R_PPC_PLTREL24 = 18,
 R_PPC_JMP_SLOT = 21,
 R_PPC_RELATIVE = 22,
 R_PPC_LOCAL24PC = 23,
 R_PPC_REL32 = 26,
 R_PPC_TLS = 67,
 R_PPC_DTPMOD32 = 68,
 R_PPC_TPREL16 = 69,
 R_PPC_TPREL16_LO = 70,
 R_PPC_TPREL16_HI = 71,
 R_PPC_TPREL16_HA = 72,
 R_PPC_TPREL32 = 73,
 R_PPC_DTPREL16 = 74,
 R_PPC_DTPREL16_LO = 75,
 R_PPC_DTPREL16_HI = 76,
 R_PPC_DTPREL16_HA = 77,
 R_PPC_DTPREL32 = 78,
 R_PPC_GOT_TLSGD16 = 79,
 R_PPC_GOT_TLSGD16_LO = 80,
 R_PPC_GOT_TLSGD16_HI = 81,
 R_PPC_GOT_TLSGD16_HA = 82,
 R_PPC_GOT_TLSLD16 = 83,
 R_PPC_GOT_TLSLD16_LO = 84,
 R_PPC_GOT_TLSLD16_HI = 85,
 R_PPC_GOT_TLSLD16_HA = 86,
 R_PPC_GOT_TPREL16 = 87,
 R_PPC_GOT_TPREL16_LO = 88,
 R_PPC_GOT_TPREL16_HI = 89,
 R_PPC_GOT_TPREL16_HA = 90,
 R_PPC_GOT_DTPREL16 = 91,
 R_PPC_GOT_DTPREL16_LO = 92,
 R_PPC_GOT_DTPREL16_HI = 93,
 R_PPC_GOT_DTPREL16_HA = 94,
 R_PPC_TLSGD = 95,
 R_PPC_TLSLD = 96,
 R_PPC_EMB_SDA21 = 109,
 R_PPC_REL16 = 249,
 R_PPC_REL16_LO = 250,
 R_PPC_REL16_HI = 251,
 R_PPC_REL16_HA = 252,
};

enum RplFileInfoFlag : uint32_t
{
 RPL_IS_RPX = 0x2,
};

static const unsigned HeaderMagic = 0x7f454c46;

struct Header
{
 be_val<uint32_t> magic; /* File identification. */
 be_val<uint8_t> fileClass; /* File class. */
 be_val<uint8_t> encoding; /* Data encoding. */
 be_val<uint8_t> elfVersion; /* File version. */
 be_val<uint16_t> abi; /* OS/ABI identification. (EABI_*) */
 be_val<uint8_t> pad[7];

 be_val<uint16_t> type; /* Type of file (ET_*) */
 be_val<uint16_t> machine; /* Required architecture for this file (EM_*) */
 be_val<uint32_t> version; /* Must be equal to 1 */
 be_val<uint32_t> entry; /* Address to jump to in order to start program */
 be_val<uint32_t> phoff; /* Program header table's file offset, in bytes */
 be_val<uint32_t> shoff; /* Section header table's file offset, in bytes */
 be_val<uint32_t> flags; /* Processor-specific flags */
 be_val<uint16_t> ehsize; /* Size of ELF header, in bytes */
 be_val<uint16_t> phentsize; /* Size of an entry in the program header table */
 be_val<uint16_t> phnum; /* Number of entries in the program header table */
 be_val<uint16_t> shentsize; /* Size of an entry in the section header table */
 be_val<uint16_t> shnum; /* Number of entries in the section header table */
 be_val<uint16_t> shstrndx; /* Sect hdr table index of sect name string table */
};
CHECK_SIZE(Header, 0x34);

struct SectionHeader
{
 be_val<uint32_t> name; /* Section name (index into string table) */
 be_val<uint32_t> type; /* Section type (SHT_*) */
 be_val<uint32_t> flags; /* Section flags (SHF_*) */
 be_val<uint32_t> addr; /* Address where section is to be loaded */
 be_val<uint32_t> offset; /* File offset of section data, in bytes */
 be_val<uint32_t> size; /* Size of section, in bytes */
 be_val<uint32_t> link; /* Section type-specific header table index link */
 be_val<uint32_t> info; /* Section type-specific extra information */
 be_val<uint32_t> addralign; /* Section address alignment */
 be_val<uint32_t> entsize; /* Size of records contained within the section */
};
CHECK_SIZE(SectionHeader, 0x28);

struct Symbol
{
 be_val<uint32_t> name; /* Symbol name (index into string table) */
 be_val<uint32_t> value; /* Value or address associated with the symbol */
 be_val<uint32_t> size; /* Size of the symbol */
 be_val<uint8_t> info; /* Symbol's type and binding attributes */
 be_val<uint8_t> other; /* Must be zero; reserved */
 be_val<uint16_t> shndx; /* Which section (header table index) it's defined in (SHN_*) */
};
CHECK_SIZE(Symbol, 0x10);

struct Rela
{
 be_val<uint32_t> offset;
 be_val<uint32_t> info;
 be_val<int32_t> addend;
};
CHECK_SIZE(Rela, 0x0C);

struct RplImport
{
 be_val<uint32_t> count;
 be_val<uint32_t> signature;
 char name[1];
};

struct RplExport
{
 struct Export
 {
 be_val<uint32_t> value;
 be_val<uint32_t> name;
 };

 be_val<uint32_t> count;
 be_val<uint32_t> signature;
 Export exports[1];
};

struct RplCrc
{
 be_val<uint32_t> crc;
};
CHECK_SIZE(RplCrc, 0x04);

struct RplFileInfo
{
 be_val<uint32_t> version;
 be_val<uint32_t> textSize;
 be_val<uint32_t> textAlign;
 be_val<uint32_t> dataSize;
 be_val<uint32_t> dataAlign;
 be_val<uint32_t> loadSize;
 be_val<uint32_t> loadAlign;
 be_val<uint32_t> tempSize;
 be_val<uint32_t> trampAdjust;
 be_val<uint32_t> sdaBase;
 be_val<uint32_t> sda2Base;
 be_val<uint32_t> stackSize;
 be_val<uint32_t> filename;
 be_val<uint32_t> flags;
 be_val<uint32_t> heapSize;
 be_val<uint32_t> tagOffset;
 be_val<uint32_t> minVersion;
 be_val<int32_t> compressionLevel;
 be_val<uint32_t> trampAddition;
 be_val<uint32_t> fileInfoPad;
 be_val<uint32_t> cafeSdkVersion;
 be_val<uint32_t> cafeSdkRevision;
 be_val<uint16_t> tlsModuleIndex;
 be_val<uint16_t> tlsAlignShift;
 be_val<uint32_t> runtimeFileInfoSize;
};
CHECK_SIZE(RplFileInfo, 0x60);

} /* namespace elf */

#pragma pack(pop)