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zig/lib/std/elf.zig

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const std = @import("std.zig");
const builtin = std.builtin;
const io = std.io;
const os = std.os;
const math = std.math;
const mem = std.mem;
const debug = std.debug;
const File = std.fs.File;
pub const AT_NULL = 0;
pub const AT_IGNORE = 1;
pub const AT_EXECFD = 2;
pub const AT_PHDR = 3;
pub const AT_PHENT = 4;
pub const AT_PHNUM = 5;
pub const AT_PAGESZ = 6;
pub const AT_BASE = 7;
pub const AT_FLAGS = 8;
pub const AT_ENTRY = 9;
pub const AT_NOTELF = 10;
pub const AT_UID = 11;
pub const AT_EUID = 12;
pub const AT_GID = 13;
pub const AT_EGID = 14;
pub const AT_CLKTCK = 17;
pub const AT_PLATFORM = 15;
pub const AT_HWCAP = 16;
pub const AT_FPUCW = 18;
pub const AT_DCACHEBSIZE = 19;
pub const AT_ICACHEBSIZE = 20;
pub const AT_UCACHEBSIZE = 21;
pub const AT_IGNOREPPC = 22;
pub const AT_SECURE = 23;
pub const AT_BASE_PLATFORM = 24;
pub const AT_RANDOM = 25;
pub const AT_HWCAP2 = 26;
pub const AT_EXECFN = 31;
pub const AT_SYSINFO = 32;
pub const AT_SYSINFO_EHDR = 33;
pub const AT_L1I_CACHESHAPE = 34;
pub const AT_L1D_CACHESHAPE = 35;
pub const AT_L2_CACHESHAPE = 36;
pub const AT_L3_CACHESHAPE = 37;
pub const AT_L1I_CACHESIZE = 40;
pub const AT_L1I_CACHEGEOMETRY = 41;
pub const AT_L1D_CACHESIZE = 42;
pub const AT_L1D_CACHEGEOMETRY = 43;
pub const AT_L2_CACHESIZE = 44;
pub const AT_L2_CACHEGEOMETRY = 45;
pub const AT_L3_CACHESIZE = 46;
pub const AT_L3_CACHEGEOMETRY = 47;
pub const DT_NULL = 0;
pub const DT_NEEDED = 1;
pub const DT_PLTRELSZ = 2;
pub const DT_PLTGOT = 3;
pub const DT_HASH = 4;
pub const DT_STRTAB = 5;
pub const DT_SYMTAB = 6;
pub const DT_RELA = 7;
pub const DT_RELASZ = 8;
pub const DT_RELAENT = 9;
pub const DT_STRSZ = 10;
pub const DT_SYMENT = 11;
pub const DT_INIT = 12;
pub const DT_FINI = 13;
pub const DT_SONAME = 14;
pub const DT_RPATH = 15;
pub const DT_SYMBOLIC = 16;
pub const DT_REL = 17;
pub const DT_RELSZ = 18;
pub const DT_RELENT = 19;
pub const DT_PLTREL = 20;
pub const DT_DEBUG = 21;
pub const DT_TEXTREL = 22;
pub const DT_JMPREL = 23;
pub const DT_BIND_NOW = 24;
pub const DT_INIT_ARRAY = 25;
pub const DT_FINI_ARRAY = 26;
pub const DT_INIT_ARRAYSZ = 27;
pub const DT_FINI_ARRAYSZ = 28;
pub const DT_RUNPATH = 29;
pub const DT_FLAGS = 30;
pub const DT_ENCODING = 32;
pub const DT_PREINIT_ARRAY = 32;
pub const DT_PREINIT_ARRAYSZ = 33;
pub const DT_SYMTAB_SHNDX = 34;
pub const DT_NUM = 35;
pub const DT_LOOS = 0x6000000d;
pub const DT_HIOS = 0x6ffff000;
pub const DT_LOPROC = 0x70000000;
pub const DT_HIPROC = 0x7fffffff;
pub const DT_PROCNUM = DT_MIPS_NUM;
pub const DT_VALRNGLO = 0x6ffffd00;
pub const DT_GNU_PRELINKED = 0x6ffffdf5;
pub const DT_GNU_CONFLICTSZ = 0x6ffffdf6;
pub const DT_GNU_LIBLISTSZ = 0x6ffffdf7;
pub const DT_CHECKSUM = 0x6ffffdf8;
pub const DT_PLTPADSZ = 0x6ffffdf9;
pub const DT_MOVEENT = 0x6ffffdfa;
pub const DT_MOVESZ = 0x6ffffdfb;
pub const DT_FEATURE_1 = 0x6ffffdfc;
pub const DT_POSFLAG_1 = 0x6ffffdfd;
pub const DT_SYMINSZ = 0x6ffffdfe;
pub const DT_SYMINENT = 0x6ffffdff;
pub const DT_VALRNGHI = 0x6ffffdff;
pub const DT_VALNUM = 12;
pub const DT_ADDRRNGLO = 0x6ffffe00;
pub const DT_GNU_HASH = 0x6ffffef5;
pub const DT_TLSDESC_PLT = 0x6ffffef6;
pub const DT_TLSDESC_GOT = 0x6ffffef7;
pub const DT_GNU_CONFLICT = 0x6ffffef8;
pub const DT_GNU_LIBLIST = 0x6ffffef9;
pub const DT_CONFIG = 0x6ffffefa;
pub const DT_DEPAUDIT = 0x6ffffefb;
pub const DT_AUDIT = 0x6ffffefc;
pub const DT_PLTPAD = 0x6ffffefd;
pub const DT_MOVETAB = 0x6ffffefe;
pub const DT_SYMINFO = 0x6ffffeff;
pub const DT_ADDRRNGHI = 0x6ffffeff;
pub const DT_ADDRNUM = 11;
pub const DT_VERSYM = 0x6ffffff0;
pub const DT_RELACOUNT = 0x6ffffff9;
pub const DT_RELCOUNT = 0x6ffffffa;
pub const DT_FLAGS_1 = 0x6ffffffb;
pub const DT_VERDEF = 0x6ffffffc;
pub const DT_VERDEFNUM = 0x6ffffffd;
pub const DT_VERNEED = 0x6ffffffe;
pub const DT_VERNEEDNUM = 0x6fffffff;
pub const DT_VERSIONTAGNUM = 16;
pub const DT_AUXILIARY = 0x7ffffffd;
pub const DT_FILTER = 0x7fffffff;
pub const DT_EXTRANUM = 3;
pub const DT_SPARC_REGISTER = 0x70000001;
pub const DT_SPARC_NUM = 2;
pub const DT_MIPS_RLD_VERSION = 0x70000001;
pub const DT_MIPS_TIME_STAMP = 0x70000002;
pub const DT_MIPS_ICHECKSUM = 0x70000003;
pub const DT_MIPS_IVERSION = 0x70000004;
pub const DT_MIPS_FLAGS = 0x70000005;
pub const DT_MIPS_BASE_ADDRESS = 0x70000006;
pub const DT_MIPS_MSYM = 0x70000007;
pub const DT_MIPS_CONFLICT = 0x70000008;
pub const DT_MIPS_LIBLIST = 0x70000009;
pub const DT_MIPS_LOCAL_GOTNO = 0x7000000a;
pub const DT_MIPS_CONFLICTNO = 0x7000000b;
pub const DT_MIPS_LIBLISTNO = 0x70000010;
pub const DT_MIPS_SYMTABNO = 0x70000011;
pub const DT_MIPS_UNREFEXTNO = 0x70000012;
pub const DT_MIPS_GOTSYM = 0x70000013;
pub const DT_MIPS_HIPAGENO = 0x70000014;
pub const DT_MIPS_RLD_MAP = 0x70000016;
pub const DT_MIPS_DELTA_CLASS = 0x70000017;
pub const DT_MIPS_DELTA_CLASS_NO = 0x70000018;
pub const DT_MIPS_DELTA_INSTANCE = 0x70000019;
pub const DT_MIPS_DELTA_INSTANCE_NO = 0x7000001a;
pub const DT_MIPS_DELTA_RELOC = 0x7000001b;
pub const DT_MIPS_DELTA_RELOC_NO = 0x7000001c;
pub const DT_MIPS_DELTA_SYM = 0x7000001d;
pub const DT_MIPS_DELTA_SYM_NO = 0x7000001e;
pub const DT_MIPS_DELTA_CLASSSYM = 0x70000020;
pub const DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021;
pub const DT_MIPS_CXX_FLAGS = 0x70000022;
pub const DT_MIPS_PIXIE_INIT = 0x70000023;
pub const DT_MIPS_SYMBOL_LIB = 0x70000024;
pub const DT_MIPS_LOCALPAGE_GOTIDX = 0x70000025;
pub const DT_MIPS_LOCAL_GOTIDX = 0x70000026;
pub const DT_MIPS_HIDDEN_GOTIDX = 0x70000027;
pub const DT_MIPS_PROTECTED_GOTIDX = 0x70000028;
pub const DT_MIPS_OPTIONS = 0x70000029;
pub const DT_MIPS_INTERFACE = 0x7000002a;
pub const DT_MIPS_DYNSTR_ALIGN = 0x7000002b;
pub const DT_MIPS_INTERFACE_SIZE = 0x7000002c;
pub const DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002d;
pub const DT_MIPS_PERF_SUFFIX = 0x7000002e;
pub const DT_MIPS_COMPACT_SIZE = 0x7000002f;
pub const DT_MIPS_GP_VALUE = 0x70000030;
pub const DT_MIPS_AUX_DYNAMIC = 0x70000031;
pub const DT_MIPS_PLTGOT = 0x70000032;
pub const DT_MIPS_RWPLT = 0x70000034;
pub const DT_MIPS_RLD_MAP_REL = 0x70000035;
pub const DT_MIPS_NUM = 0x36;
pub const DT_ALPHA_PLTRO = (DT_LOPROC + 0);
pub const DT_ALPHA_NUM = 1;
pub const DT_PPC_GOT = (DT_LOPROC + 0);
pub const DT_PPC_OPT = (DT_LOPROC + 1);
pub const DT_PPC_NUM = 2;
pub const DT_PPC64_GLINK = (DT_LOPROC + 0);
pub const DT_PPC64_OPD = (DT_LOPROC + 1);
pub const DT_PPC64_OPDSZ = (DT_LOPROC + 2);
pub const DT_PPC64_OPT = (DT_LOPROC + 3);
pub const DT_PPC64_NUM = 4;
pub const DT_IA_64_PLT_RESERVE = (DT_LOPROC + 0);
pub const DT_IA_64_NUM = 1;
pub const DT_NIOS2_GP = 0x70000002;
pub const PT_NULL = 0;
pub const PT_LOAD = 1;
pub const PT_DYNAMIC = 2;
pub const PT_INTERP = 3;
pub const PT_NOTE = 4;
pub const PT_SHLIB = 5;
pub const PT_PHDR = 6;
pub const PT_TLS = 7;
pub const PT_NUM = 8;
pub const PT_LOOS = 0x60000000;
pub const PT_GNU_EH_FRAME = 0x6474e550;
pub const PT_GNU_STACK = 0x6474e551;
pub const PT_GNU_RELRO = 0x6474e552;
pub const PT_LOSUNW = 0x6ffffffa;
pub const PT_SUNWBSS = 0x6ffffffa;
pub const PT_SUNWSTACK = 0x6ffffffb;
pub const PT_HISUNW = 0x6fffffff;
pub const PT_HIOS = 0x6fffffff;
pub const PT_LOPROC = 0x70000000;
pub const PT_HIPROC = 0x7fffffff;
pub const SHT_NULL = 0;
pub const SHT_PROGBITS = 1;
pub const SHT_SYMTAB = 2;
pub const SHT_STRTAB = 3;
pub const SHT_RELA = 4;
pub const SHT_HASH = 5;
pub const SHT_DYNAMIC = 6;
pub const SHT_NOTE = 7;
pub const SHT_NOBITS = 8;
pub const SHT_REL = 9;
pub const SHT_SHLIB = 10;
pub const SHT_DYNSYM = 11;
pub const SHT_INIT_ARRAY = 14;
pub const SHT_FINI_ARRAY = 15;
pub const SHT_PREINIT_ARRAY = 16;
pub const SHT_GROUP = 17;
pub const SHT_SYMTAB_SHNDX = 18;
pub const SHT_LOOS = 0x60000000;
pub const SHT_HIOS = 0x6fffffff;
pub const SHT_LOPROC = 0x70000000;
pub const SHT_HIPROC = 0x7fffffff;
pub const SHT_LOUSER = 0x80000000;
pub const SHT_HIUSER = 0xffffffff;
pub const STB_LOCAL = 0;
pub const STB_GLOBAL = 1;
pub const STB_WEAK = 2;
pub const STB_NUM = 3;
pub const STB_LOOS = 10;
pub const STB_GNU_UNIQUE = 10;
pub const STB_HIOS = 12;
pub const STB_LOPROC = 13;
pub const STB_HIPROC = 15;
pub const STB_MIPS_SPLIT_COMMON = 13;
pub const STT_NOTYPE = 0;
pub const STT_OBJECT = 1;
pub const STT_FUNC = 2;
pub const STT_SECTION = 3;
pub const STT_FILE = 4;
pub const STT_COMMON = 5;
pub const STT_TLS = 6;
pub const STT_NUM = 7;
pub const STT_LOOS = 10;
pub const STT_GNU_IFUNC = 10;
pub const STT_HIOS = 12;
pub const STT_LOPROC = 13;
pub const STT_HIPROC = 15;
pub const STT_SPARC_REGISTER = 13;
pub const STT_PARISC_MILLICODE = 13;
pub const STT_HP_OPAQUE = (STT_LOOS + 0x1);
pub const STT_HP_STUB = (STT_LOOS + 0x2);
pub const STT_ARM_TFUNC = STT_LOPROC;
pub const STT_ARM_16BIT = STT_HIPROC;
pub const VER_FLG_BASE = 0x1;
pub const VER_FLG_WEAK = 0x2;
/// File types
pub const ET = extern enum(u16) {
/// No file type
NONE = 0,
/// Relocatable file
REL = 1,
/// Executable file
EXEC = 2,
/// Shared object file
DYN = 3,
/// Core file
CORE = 4,
/// Beginning of processor-specific codes
pub const LOPROC = 0xff00;
/// Processor-specific
pub const HIPROC = 0xffff;
};
/// All integers are native endian.
const Header = struct {
endian: builtin.Endian,
is_64: bool,
entry: u64,
phoff: u64,
shoff: u64,
phentsize: u16,
phnum: u16,
shentsize: u16,
shnum: u16,
shstrndx: u16,
};
pub fn readHeader(file: File) !Header {
var hdr_buf: [@sizeOf(Elf64_Ehdr)]u8 align(@alignOf(Elf64_Ehdr)) = undefined;
try preadNoEof(file, &hdr_buf, 0);
const hdr32 = @ptrCast(*Elf32_Ehdr, &hdr_buf);
const hdr64 = @ptrCast(*Elf64_Ehdr, &hdr_buf);
if (!mem.eql(u8, hdr32.e_ident[0..4], "\x7fELF")) return error.InvalidElfMagic;
if (hdr32.e_ident[EI_VERSION] != 1) return error.InvalidElfVersion;
const endian: std.builtin.Endian = switch (hdr32.e_ident[EI_DATA]) {
ELFDATA2LSB => .Little,
ELFDATA2MSB => .Big,
else => return error.InvalidElfEndian,
};
const need_bswap = endian != std.builtin.endian;
const is_64 = switch (hdr32.e_ident[EI_CLASS]) {
ELFCLASS32 => false,
ELFCLASS64 => true,
else => return error.InvalidElfClass,
};
return @as(Header, .{
.endian = endian,
.is_64 = is_64,
.entry = int(is_64, need_bswap, hdr32.e_entry, hdr64.e_entry),
.phoff = int(is_64, need_bswap, hdr32.e_phoff, hdr64.e_phoff),
.shoff = int(is_64, need_bswap, hdr32.e_shoff, hdr64.e_shoff),
.phentsize = int(is_64, need_bswap, hdr32.e_phentsize, hdr64.e_phentsize),
.phnum = int(is_64, need_bswap, hdr32.e_phnum, hdr64.e_phnum),
.shentsize = int(is_64, need_bswap, hdr32.e_shentsize, hdr64.e_shentsize),
.shnum = int(is_64, need_bswap, hdr32.e_shnum, hdr64.e_shnum),
.shstrndx = int(is_64, need_bswap, hdr32.e_shstrndx, hdr64.e_shstrndx),
});
}
/// All integers are native endian.
pub const AllHeaders = struct {
header: Header,
section_headers: []Elf64_Shdr,
program_headers: []Elf64_Phdr,
allocator: *mem.Allocator,
};
pub fn readAllHeaders(allocator: *mem.Allocator, file: File) !AllHeaders {
var hdrs: AllHeaders = .{
.allocator = allocator,
.header = try readHeader(file),
.section_headers = undefined,
.program_headers = undefined,
};
const is_64 = hdrs.header.is_64;
const need_bswap = hdrs.header.endian != std.builtin.endian;
hdrs.section_headers = try allocator.alloc(Elf64_Shdr, hdrs.header.shnum);
errdefer allocator.free(hdrs.section_headers);
hdrs.program_headers = try allocator.alloc(Elf64_Phdr, hdrs.header.phnum);
errdefer allocator.free(hdrs.program_headers);
// If the ELF file is 64-bit and same-endianness, then all we have to do is
// yeet the bytes into memory.
// If only the endianness is different, they can be simply byte swapped.
if (is_64) {
const shdr_buf = std.mem.sliceAsBytes(hdrs.section_headers);
const phdr_buf = std.mem.sliceAsBytes(hdrs.program_headers);
try preadNoEof(file, shdr_buf, hdrs.header.shoff);
try preadNoEof(file, phdr_buf, hdrs.header.phoff);
if (need_bswap) {
for (hdrs.section_headers) |*shdr| {
shdr.* = .{
.sh_name = @byteSwap(@TypeOf(shdr.sh_name), shdr.sh_name),
.sh_type = @byteSwap(@TypeOf(shdr.sh_type), shdr.sh_type),
.sh_flags = @byteSwap(@TypeOf(shdr.sh_flags), shdr.sh_flags),
.sh_addr = @byteSwap(@TypeOf(shdr.sh_addr), shdr.sh_addr),
.sh_offset = @byteSwap(@TypeOf(shdr.sh_offset), shdr.sh_offset),
.sh_size = @byteSwap(@TypeOf(shdr.sh_size), shdr.sh_size),
.sh_link = @byteSwap(@TypeOf(shdr.sh_link), shdr.sh_link),
.sh_info = @byteSwap(@TypeOf(shdr.sh_info), shdr.sh_info),
.sh_addralign = @byteSwap(@TypeOf(shdr.sh_addralign), shdr.sh_addralign),
.sh_entsize = @byteSwap(@TypeOf(shdr.sh_entsize), shdr.sh_entsize),
};
}
for (hdrs.program_headers) |*phdr| {
phdr.* = .{
.p_type = @byteSwap(@TypeOf(phdr.p_type), phdr.p_type),
.p_offset = @byteSwap(@TypeOf(phdr.p_offset), phdr.p_offset),
.p_vaddr = @byteSwap(@TypeOf(phdr.p_vaddr), phdr.p_vaddr),
.p_paddr = @byteSwap(@TypeOf(phdr.p_paddr), phdr.p_paddr),
.p_filesz = @byteSwap(@TypeOf(phdr.p_filesz), phdr.p_filesz),
.p_memsz = @byteSwap(@TypeOf(phdr.p_memsz), phdr.p_memsz),
.p_flags = @byteSwap(@TypeOf(phdr.p_flags), phdr.p_flags),
.p_align = @byteSwap(@TypeOf(phdr.p_align), phdr.p_align),
};
}
}
return hdrs;
}
const shdrs_32 = try allocator.alloc(Elf32_Shdr, hdrs.header.shnum);
defer allocator.free(shdrs_32);
const phdrs_32 = try allocator.alloc(Elf32_Phdr, hdrs.header.phnum);
defer allocator.free(phdrs_32);
const shdr_buf = std.mem.sliceAsBytes(shdrs_32);
const phdr_buf = std.mem.sliceAsBytes(phdrs_32);
try preadNoEof(file, shdr_buf, hdrs.header.shoff);
try preadNoEof(file, phdr_buf, hdrs.header.phoff);
if (need_bswap) {
for (hdrs.section_headers) |*shdr, i| {
const o = shdrs_32[i];
shdr.* = .{
.sh_name = @byteSwap(@TypeOf(o.sh_name), o.sh_name),
.sh_type = @byteSwap(@TypeOf(o.sh_type), o.sh_type),
.sh_flags = @byteSwap(@TypeOf(o.sh_flags), o.sh_flags),
.sh_addr = @byteSwap(@TypeOf(o.sh_addr), o.sh_addr),
.sh_offset = @byteSwap(@TypeOf(o.sh_offset), o.sh_offset),
.sh_size = @byteSwap(@TypeOf(o.sh_size), o.sh_size),
.sh_link = @byteSwap(@TypeOf(o.sh_link), o.sh_link),
.sh_info = @byteSwap(@TypeOf(o.sh_info), o.sh_info),
.sh_addralign = @byteSwap(@TypeOf(o.sh_addralign), o.sh_addralign),
.sh_entsize = @byteSwap(@TypeOf(o.sh_entsize), o.sh_entsize),
};
}
for (hdrs.program_headers) |*phdr, i| {
const o = phdrs_32[i];
phdr.* = .{
.p_type = @byteSwap(@TypeOf(o.p_type), o.p_type),
.p_offset = @byteSwap(@TypeOf(o.p_offset), o.p_offset),
.p_vaddr = @byteSwap(@TypeOf(o.p_vaddr), o.p_vaddr),
.p_paddr = @byteSwap(@TypeOf(o.p_paddr), o.p_paddr),
.p_filesz = @byteSwap(@TypeOf(o.p_filesz), o.p_filesz),
.p_memsz = @byteSwap(@TypeOf(o.p_memsz), o.p_memsz),
.p_flags = @byteSwap(@TypeOf(o.p_flags), o.p_flags),
.p_align = @byteSwap(@TypeOf(o.p_align), o.p_align),
};
}
} else {
for (hdrs.section_headers) |*shdr, i| {
const o = shdrs_32[i];
shdr.* = .{
.sh_name = o.sh_name,
.sh_type = o.sh_type,
.sh_flags = o.sh_flags,
.sh_addr = o.sh_addr,
.sh_offset = o.sh_offset,
.sh_size = o.sh_size,
.sh_link = o.sh_link,
.sh_info = o.sh_info,
.sh_addralign = o.sh_addralign,
.sh_entsize = o.sh_entsize,
};
}
for (hdrs.program_headers) |*phdr, i| {
const o = phdrs_32[i];
phdr.* = .{
.p_type = o.p_type,
.p_offset = o.p_offset,
.p_vaddr = o.p_vaddr,
.p_paddr = o.p_paddr,
.p_filesz = o.p_filesz,
.p_memsz = o.p_memsz,
.p_flags = o.p_flags,
.p_align = o.p_align,
};
}
}
return hdrs;
}
pub fn int(is_64: bool, need_bswap: bool, int_32: var, int_64: var) @TypeOf(int_64) {
if (is_64) {
if (need_bswap) {
return @byteSwap(@TypeOf(int_64), int_64);
} else {
return int_64;
}
} else {
return int32(need_bswap, int_32, @TypeOf(int_64));
}
}
pub fn int32(need_bswap: bool, int_32: var, comptime Int64: var) Int64 {
if (need_bswap) {
return @byteSwap(@TypeOf(int_32), int_32);
} else {
return int_32;
}
}
fn preadNoEof(file: std.fs.File, buf: []u8, offset: u64) !void {
var i: u64 = 0;
while (i < buf.len) {
const len = file.pread(buf[i .. buf.len - i], offset + i) catch |err| switch (err) {
error.SystemResources => return error.SystemResources,
error.IsDir => return error.UnableToReadElfFile,
error.OperationAborted => return error.UnableToReadElfFile,
error.BrokenPipe => return error.UnableToReadElfFile,
error.Unseekable => return error.UnableToReadElfFile,
error.ConnectionResetByPeer => return error.UnableToReadElfFile,
error.ConnectionTimedOut => return error.UnableToReadElfFile,
error.InputOutput => return error.FileSystem,
error.Unexpected => return error.Unexpected,
error.WouldBlock => return error.Unexpected,
};
if (len == 0) return error.UnexpectedEndOfFile;
i += len;
}
}
pub const EI_NIDENT = 16;
pub const EI_CLASS = 4;
pub const ELFCLASSNONE = 0;
pub const ELFCLASS32 = 1;
pub const ELFCLASS64 = 2;
pub const ELFCLASSNUM = 3;
pub const EI_DATA = 5;
pub const ELFDATANONE = 0;
pub const ELFDATA2LSB = 1;
pub const ELFDATA2MSB = 2;
pub const ELFDATANUM = 3;
pub const EI_VERSION = 6;
pub const Elf32_Half = u16;
pub const Elf64_Half = u16;
pub const Elf32_Word = u32;
pub const Elf32_Sword = i32;
pub const Elf64_Word = u32;
pub const Elf64_Sword = i32;
pub const Elf32_Xword = u64;
pub const Elf32_Sxword = i64;
pub const Elf64_Xword = u64;
pub const Elf64_Sxword = i64;
pub const Elf32_Addr = u32;
pub const Elf64_Addr = u64;
pub const Elf32_Off = u32;
pub const Elf64_Off = u64;
pub const Elf32_Section = u16;
pub const Elf64_Section = u16;
pub const Elf32_Versym = Elf32_Half;
pub const Elf64_Versym = Elf64_Half;
pub const Elf32_Ehdr = extern struct {
e_ident: [EI_NIDENT]u8,
e_type: ET,
e_machine: EM,
e_version: Elf32_Word,
e_entry: Elf32_Addr,
e_phoff: Elf32_Off,
e_shoff: Elf32_Off,
e_flags: Elf32_Word,
e_ehsize: Elf32_Half,
e_phentsize: Elf32_Half,
e_phnum: Elf32_Half,
e_shentsize: Elf32_Half,
e_shnum: Elf32_Half,
e_shstrndx: Elf32_Half,
};
pub const Elf64_Ehdr = extern struct {
e_ident: [EI_NIDENT]u8,
e_type: ET,
e_machine: EM,
e_version: Elf64_Word,
e_entry: Elf64_Addr,
e_phoff: Elf64_Off,
e_shoff: Elf64_Off,
e_flags: Elf64_Word,
e_ehsize: Elf64_Half,
e_phentsize: Elf64_Half,
e_phnum: Elf64_Half,
e_shentsize: Elf64_Half,
e_shnum: Elf64_Half,
e_shstrndx: Elf64_Half,
};
pub const Elf32_Phdr = extern struct {
p_type: Elf32_Word,
p_offset: Elf32_Off,
p_vaddr: Elf32_Addr,
p_paddr: Elf32_Addr,
p_filesz: Elf32_Word,
p_memsz: Elf32_Word,
p_flags: Elf32_Word,
p_align: Elf32_Word,
};
pub const Elf64_Phdr = extern struct {
p_type: Elf64_Word,
p_flags: Elf64_Word,
p_offset: Elf64_Off,
p_vaddr: Elf64_Addr,
p_paddr: Elf64_Addr,
p_filesz: Elf64_Xword,
p_memsz: Elf64_Xword,
p_align: Elf64_Xword,
};
pub const Elf32_Shdr = extern struct {
sh_name: Elf32_Word,
sh_type: Elf32_Word,
sh_flags: Elf32_Word,
sh_addr: Elf32_Addr,
sh_offset: Elf32_Off,
sh_size: Elf32_Word,
sh_link: Elf32_Word,
sh_info: Elf32_Word,
sh_addralign: Elf32_Word,
sh_entsize: Elf32_Word,
};
pub const Elf64_Shdr = extern struct {
sh_name: Elf64_Word,
sh_type: Elf64_Word,
sh_flags: Elf64_Xword,
sh_addr: Elf64_Addr,
sh_offset: Elf64_Off,
sh_size: Elf64_Xword,
sh_link: Elf64_Word,
sh_info: Elf64_Word,
sh_addralign: Elf64_Xword,
sh_entsize: Elf64_Xword,
};
pub const Elf32_Chdr = extern struct {
ch_type: Elf32_Word,
ch_size: Elf32_Word,
ch_addralign: Elf32_Word,
};
pub const Elf64_Chdr = extern struct {
ch_type: Elf64_Word,
ch_reserved: Elf64_Word,
ch_size: Elf64_Xword,
ch_addralign: Elf64_Xword,
};
pub const Elf32_Sym = extern struct {
st_name: Elf32_Word,
st_value: Elf32_Addr,
st_size: Elf32_Word,
st_info: u8,
st_other: u8,
st_shndx: Elf32_Section,
};
pub const Elf64_Sym = extern struct {
st_name: Elf64_Word,
st_info: u8,
st_other: u8,
st_shndx: Elf64_Section,
st_value: Elf64_Addr,
st_size: Elf64_Xword,
};
pub const Elf32_Syminfo = extern struct {
si_boundto: Elf32_Half,
si_flags: Elf32_Half,
};
pub const Elf64_Syminfo = extern struct {
si_boundto: Elf64_Half,
si_flags: Elf64_Half,
};
pub const Elf32_Rel = extern struct {
r_offset: Elf32_Addr,
r_info: Elf32_Word,
};
pub const Elf64_Rel = extern struct {
r_offset: Elf64_Addr,
r_info: Elf64_Xword,
};
pub const Elf32_Rela = extern struct {
r_offset: Elf32_Addr,
r_info: Elf32_Word,
r_addend: Elf32_Sword,
};
pub const Elf64_Rela = extern struct {
r_offset: Elf64_Addr,
r_info: Elf64_Xword,
r_addend: Elf64_Sxword,
};
pub const Elf32_Dyn = extern struct {
d_tag: Elf32_Sword,
d_val: Elf32_Addr,
};
pub const Elf64_Dyn = extern struct {
d_tag: Elf64_Sxword,
d_val: Elf64_Addr,
};
pub const Elf32_Verdef = extern struct {
vd_version: Elf32_Half,
vd_flags: Elf32_Half,
vd_ndx: Elf32_Half,
vd_cnt: Elf32_Half,
vd_hash: Elf32_Word,
vd_aux: Elf32_Word,
vd_next: Elf32_Word,
};
pub const Elf64_Verdef = extern struct {
vd_version: Elf64_Half,
vd_flags: Elf64_Half,
vd_ndx: Elf64_Half,
vd_cnt: Elf64_Half,
vd_hash: Elf64_Word,
vd_aux: Elf64_Word,
vd_next: Elf64_Word,
};
pub const Elf32_Verdaux = extern struct {
vda_name: Elf32_Word,
vda_next: Elf32_Word,
};
pub const Elf64_Verdaux = extern struct {
vda_name: Elf64_Word,
vda_next: Elf64_Word,
};
pub const Elf32_Verneed = extern struct {
vn_version: Elf32_Half,
vn_cnt: Elf32_Half,
vn_file: Elf32_Word,
vn_aux: Elf32_Word,
vn_next: Elf32_Word,
};
pub const Elf64_Verneed = extern struct {
vn_version: Elf64_Half,
vn_cnt: Elf64_Half,
vn_file: Elf64_Word,
vn_aux: Elf64_Word,
vn_next: Elf64_Word,
};
pub const Elf32_Vernaux = extern struct {
vna_hash: Elf32_Word,
vna_flags: Elf32_Half,
vna_other: Elf32_Half,
vna_name: Elf32_Word,
vna_next: Elf32_Word,
};
pub const Elf64_Vernaux = extern struct {
vna_hash: Elf64_Word,
vna_flags: Elf64_Half,
vna_other: Elf64_Half,
vna_name: Elf64_Word,
vna_next: Elf64_Word,
};
pub const Elf32_auxv_t = extern struct {
a_type: u32,
a_un: extern union {
a_val: u32,
},
};
pub const Elf64_auxv_t = extern struct {
a_type: u64,
a_un: extern union {
a_val: u64,
},
};
pub const Elf32_Nhdr = extern struct {
n_namesz: Elf32_Word,
n_descsz: Elf32_Word,
n_type: Elf32_Word,
};
pub const Elf64_Nhdr = extern struct {
n_namesz: Elf64_Word,
n_descsz: Elf64_Word,
n_type: Elf64_Word,
};
pub const Elf32_Move = extern struct {
m_value: Elf32_Xword,
m_info: Elf32_Word,
m_poffset: Elf32_Word,
m_repeat: Elf32_Half,
m_stride: Elf32_Half,
};
pub const Elf64_Move = extern struct {
m_value: Elf64_Xword,
m_info: Elf64_Xword,
m_poffset: Elf64_Xword,
m_repeat: Elf64_Half,
m_stride: Elf64_Half,
};
pub const Elf32_gptab = extern union {
gt_header: extern struct {
gt_current_g_value: Elf32_Word,
gt_unused: Elf32_Word,
},
gt_entry: extern struct {
gt_g_value: Elf32_Word,
gt_bytes: Elf32_Word,
},
};
pub const Elf32_RegInfo = extern struct {
ri_gprmask: Elf32_Word,
ri_cprmask: [4]Elf32_Word,
ri_gp_value: Elf32_Sword,
};
pub const Elf_Options = extern struct {
kind: u8,
size: u8,
@"section": Elf32_Section,
info: Elf32_Word,
};
pub const Elf_Options_Hw = extern struct {
hwp_flags1: Elf32_Word,
hwp_flags2: Elf32_Word,
};
pub const Elf32_Lib = extern struct {
l_name: Elf32_Word,
l_time_stamp: Elf32_Word,
l_checksum: Elf32_Word,
l_version: Elf32_Word,
l_flags: Elf32_Word,
};
pub const Elf64_Lib = extern struct {
l_name: Elf64_Word,
l_time_stamp: Elf64_Word,
l_checksum: Elf64_Word,
l_version: Elf64_Word,
l_flags: Elf64_Word,
};
pub const Elf32_Conflict = Elf32_Addr;
pub const Elf_MIPS_ABIFlags_v0 = extern struct {
version: Elf32_Half,
isa_level: u8,
isa_rev: u8,
gpr_size: u8,
cpr1_size: u8,
cpr2_size: u8,
fp_abi: u8,
isa_ext: Elf32_Word,
ases: Elf32_Word,
flags1: Elf32_Word,
flags2: Elf32_Word,
};
comptime {
debug.assert(@sizeOf(Elf32_Ehdr) == 52);
debug.assert(@sizeOf(Elf64_Ehdr) == 64);
debug.assert(@sizeOf(Elf32_Phdr) == 32);
debug.assert(@sizeOf(Elf64_Phdr) == 56);
debug.assert(@sizeOf(Elf32_Shdr) == 40);
debug.assert(@sizeOf(Elf64_Shdr) == 64);
}
pub const Auxv = switch (@sizeOf(usize)) {
4 => Elf32_auxv_t,
8 => Elf64_auxv_t,
else => @compileError("expected pointer size of 32 or 64"),
};
pub const Ehdr = switch (@sizeOf(usize)) {
4 => Elf32_Ehdr,
8 => Elf64_Ehdr,
else => @compileError("expected pointer size of 32 or 64"),
};
pub const Phdr = switch (@sizeOf(usize)) {
4 => Elf32_Phdr,
8 => Elf64_Phdr,
else => @compileError("expected pointer size of 32 or 64"),
};
pub const Dyn = switch (@sizeOf(usize)) {
4 => Elf32_Dyn,
8 => Elf64_Dyn,
else => @compileError("expected pointer size of 32 or 64"),
};
pub const Shdr = switch (@sizeOf(usize)) {
4 => Elf32_Shdr,
8 => Elf64_Shdr,
else => @compileError("expected pointer size of 32 or 64"),
};
pub const Sym = switch (@sizeOf(usize)) {
4 => Elf32_Sym,
8 => Elf64_Sym,
else => @compileError("expected pointer size of 32 or 64"),
};
pub const Verdef = switch (@sizeOf(usize)) {
4 => Elf32_Verdef,
8 => Elf64_Verdef,
else => @compileError("expected pointer size of 32 or 64"),
};
pub const Verdaux = switch (@sizeOf(usize)) {
4 => Elf32_Verdaux,
8 => Elf64_Verdaux,
else => @compileError("expected pointer size of 32 or 64"),
};
/// Machine architectures
/// See current registered ELF machine architectures at:
/// http://www.uxsglobal.com/developers/gabi/latest/ch4.eheader.html
/// The underscore prefix is because many of these start with numbers.
pub const EM = extern enum(u16) {
/// No machine
_NONE = 0,
/// AT&T WE 32100
_M32 = 1,
/// SPARC
_SPARC = 2,
/// Intel 386
_386 = 3,
/// Motorola 68000
_68K = 4,
/// Motorola 88000
_88K = 5,
/// Intel MCU
_IAMCU = 6,
/// Intel 80860
_860 = 7,
/// MIPS R3000
_MIPS = 8,
/// IBM System/370
_S370 = 9,
/// MIPS RS3000 Little-endian
_MIPS_RS3_LE = 10,
/// Hewlett-Packard PA-RISC
_PARISC = 15,
/// Fujitsu VPP500
_VPP500 = 17,
/// Enhanced instruction set SPARC
_SPARC32PLUS = 18,
/// Intel 80960
_960 = 19,
/// PowerPC
_PPC = 20,
/// PowerPC64
_PPC64 = 21,
/// IBM System/390
_S390 = 22,
/// IBM SPU/SPC
_SPU = 23,
/// NEC V800
_V800 = 36,
/// Fujitsu FR20
_FR20 = 37,
/// TRW RH-32
_RH32 = 38,
/// Motorola RCE
_RCE = 39,
/// ARM
_ARM = 40,
/// DEC Alpha
_ALPHA = 41,
/// Hitachi SH
_SH = 42,
/// SPARC V9
_SPARCV9 = 43,
/// Siemens TriCore
_TRICORE = 44,
/// Argonaut RISC Core
_ARC = 45,
/// Hitachi H8/300
_H8_300 = 46,
/// Hitachi H8/300H
_H8_300H = 47,
/// Hitachi H8S
_H8S = 48,
/// Hitachi H8/500
_H8_500 = 49,
/// Intel IA-64 processor architecture
_IA_64 = 50,
/// Stanford MIPS-X
_MIPS_X = 51,
/// Motorola ColdFire
_COLDFIRE = 52,
/// Motorola M68HC12
_68HC12 = 53,
/// Fujitsu MMA Multimedia Accelerator
_MMA = 54,
/// Siemens PCP
_PCP = 55,
/// Sony nCPU embedded RISC processor
_NCPU = 56,
/// Denso NDR1 microprocessor
_NDR1 = 57,
/// Motorola Star*Core processor
_STARCORE = 58,
/// Toyota ME16 processor
_ME16 = 59,
/// STMicroelectronics ST100 processor
_ST100 = 60,
/// Advanced Logic Corp. TinyJ embedded processor family
_TINYJ = 61,
/// AMD x86-64 architecture
_X86_64 = 62,
/// Sony DSP Processor
_PDSP = 63,
/// Digital Equipment Corp. PDP-10
_PDP10 = 64,
/// Digital Equipment Corp. PDP-11
_PDP11 = 65,
/// Siemens FX66 microcontroller
_FX66 = 66,
/// STMicroelectronics ST9+ 8/16 bit microcontroller
_ST9PLUS = 67,
/// STMicroelectronics ST7 8-bit microcontroller
_ST7 = 68,
/// Motorola MC68HC16 Microcontroller
_68HC16 = 69,
/// Motorola MC68HC11 Microcontroller
_68HC11 = 70,
/// Motorola MC68HC08 Microcontroller
_68HC08 = 71,
/// Motorola MC68HC05 Microcontroller
_68HC05 = 72,
/// Silicon Graphics SVx
_SVX = 73,
/// STMicroelectronics ST19 8-bit microcontroller
_ST19 = 74,
/// Digital VAX
_VAX = 75,
/// Axis Communications 32-bit embedded processor
_CRIS = 76,
/// Infineon Technologies 32-bit embedded processor
_JAVELIN = 77,
/// Element 14 64-bit DSP Processor
_FIREPATH = 78,
/// LSI Logic 16-bit DSP Processor
_ZSP = 79,
/// Donald Knuth's educational 64-bit processor
_MMIX = 80,
/// Harvard University machine-independent object files
_HUANY = 81,
/// SiTera Prism
_PRISM = 82,
/// Atmel AVR 8-bit microcontroller
_AVR = 83,
/// Fujitsu FR30
_FR30 = 84,
/// Mitsubishi D10V
_D10V = 85,
/// Mitsubishi D30V
_D30V = 86,
/// NEC v850
_V850 = 87,
/// Mitsubishi M32R
_M32R = 88,
/// Matsushita MN10300
_MN10300 = 89,
/// Matsushita MN10200
_MN10200 = 90,
/// picoJava
_PJ = 91,
/// OpenRISC 32-bit embedded processor
_OPENRISC = 92,
/// ARC International ARCompact processor (old spelling/synonym: EM_ARC_A5)
_ARC_COMPACT = 93,
/// Tensilica Xtensa Architecture
_XTENSA = 94,
/// Alphamosaic VideoCore processor
_VIDEOCORE = 95,
/// Thompson Multimedia General Purpose Processor
_TMM_GPP = 96,
/// National Semiconductor 32000 series
_NS32K = 97,
/// Tenor Network TPC processor
_TPC = 98,
/// Trebia SNP 1000 processor
_SNP1K = 99,
/// STMicroelectronics (www.st.com) ST200
_ST200 = 100,
/// Ubicom IP2xxx microcontroller family
_IP2K = 101,
/// MAX Processor
_MAX = 102,
/// National Semiconductor CompactRISC microprocessor
_CR = 103,
/// Fujitsu F2MC16
_F2MC16 = 104,
/// Texas Instruments embedded microcontroller msp430
_MSP430 = 105,
/// Analog Devices Blackfin (DSP) processor
_BLACKFIN = 106,
/// S1C33 Family of Seiko Epson processors
_SE_C33 = 107,
/// Sharp embedded microprocessor
_SEP = 108,
/// Arca RISC Microprocessor
_ARCA = 109,
/// Microprocessor series from PKU-Unity Ltd. and MPRC of Peking University
_UNICORE = 110,
/// eXcess: 16/32/64-bit configurable embedded CPU
_EXCESS = 111,
/// Icera Semiconductor Inc. Deep Execution Processor
_DXP = 112,
/// Altera Nios II soft-core processor
_ALTERA_NIOS2 = 113,
/// National Semiconductor CompactRISC CRX
_CRX = 114,
/// Motorola XGATE embedded processor
_XGATE = 115,
/// Infineon C16x/XC16x processor
_C166 = 116,
/// Renesas M16C series microprocessors
_M16C = 117,
/// Microchip Technology dsPIC30F Digital Signal Controller
_DSPIC30F = 118,
/// Freescale Communication Engine RISC core
_CE = 119,
/// Renesas M32C series microprocessors
_M32C = 120,
/// Altium TSK3000 core
_TSK3000 = 131,
/// Freescale RS08 embedded processor
_RS08 = 132,
/// Analog Devices SHARC family of 32-bit DSP processors
_SHARC = 133,
/// Cyan Technology eCOG2 microprocessor
_ECOG2 = 134,
/// Sunplus S+core7 RISC processor
_SCORE7 = 135,
/// New Japan Radio (NJR) 24-bit DSP Processor
_DSP24 = 136,
/// Broadcom VideoCore III processor
_VIDEOCORE3 = 137,
/// RISC processor for Lattice FPGA architecture
_LATTICEMICO32 = 138,
/// Seiko Epson C17 family
_SE_C17 = 139,
/// The Texas Instruments TMS320C6000 DSP family
_TI_C6000 = 140,
/// The Texas Instruments TMS320C2000 DSP family
_TI_C2000 = 141,
/// The Texas Instruments TMS320C55x DSP family
_TI_C5500 = 142,
/// STMicroelectronics 64bit VLIW Data Signal Processor
_MMDSP_PLUS = 160,
/// Cypress M8C microprocessor
_CYPRESS_M8C = 161,
/// Renesas R32C series microprocessors
_R32C = 162,
/// NXP Semiconductors TriMedia architecture family
_TRIMEDIA = 163,
/// Qualcomm Hexagon processor
_HEXAGON = 164,
/// Intel 8051 and variants
_8051 = 165,
/// STMicroelectronics STxP7x family of configurable and extensible RISC processors
_STXP7X = 166,
/// Andes Technology compact code size embedded RISC processor family
_NDS32 = 167,
/// Cyan Technology eCOG1X family
_ECOG1X = 168,
/// Dallas Semiconductor MAXQ30 Core Micro-controllers
_MAXQ30 = 169,
/// New Japan Radio (NJR) 16-bit DSP Processor
_XIMO16 = 170,
/// M2000 Reconfigurable RISC Microprocessor
_MANIK = 171,
/// Cray Inc. NV2 vector architecture
_CRAYNV2 = 172,
/// Renesas RX family
_RX = 173,
/// Imagination Technologies META processor architecture
_METAG = 174,
/// MCST Elbrus general purpose hardware architecture
_MCST_ELBRUS = 175,
/// Cyan Technology eCOG16 family
_ECOG16 = 176,
/// National Semiconductor CompactRISC CR16 16-bit microprocessor
_CR16 = 177,
/// Freescale Extended Time Processing Unit
_ETPU = 178,
/// Infineon Technologies SLE9X core
_SLE9X = 179,
/// Intel L10M
_L10M = 180,
/// Intel K10M
_K10M = 181,
/// ARM AArch64
_AARCH64 = 183,
/// Atmel Corporation 32-bit microprocessor family
_AVR32 = 185,
/// STMicroeletronics STM8 8-bit microcontroller
_STM8 = 186,
/// Tilera TILE64 multicore architecture family
_TILE64 = 187,
/// Tilera TILEPro multicore architecture family
_TILEPRO = 188,
/// NVIDIA CUDA architecture
_CUDA = 190,
/// Tilera TILE-Gx multicore architecture family
_TILEGX = 191,
/// CloudShield architecture family
_CLOUDSHIELD = 192,
/// KIPO-KAIST Core-A 1st generation processor family
_COREA_1ST = 193,
/// KIPO-KAIST Core-A 2nd generation processor family
_COREA_2ND = 194,
/// Synopsys ARCompact V2
_ARC_COMPACT2 = 195,
/// Open8 8-bit RISC soft processor core
_OPEN8 = 196,
/// Renesas RL78 family
_RL78 = 197,
/// Broadcom VideoCore V processor
_VIDEOCORE5 = 198,
/// Renesas 78KOR family
_78KOR = 199,
/// Freescale 56800EX Digital Signal Controller (DSC)
_56800EX = 200,
/// Beyond BA1 CPU architecture
_BA1 = 201,
/// Beyond BA2 CPU architecture
_BA2 = 202,
/// XMOS xCORE processor family
_XCORE = 203,
/// Microchip 8-bit PIC(r) family
_MCHP_PIC = 204,
/// Reserved by Intel
_INTEL205 = 205,
/// Reserved by Intel
_INTEL206 = 206,
/// Reserved by Intel
_INTEL207 = 207,
/// Reserved by Intel
_INTEL208 = 208,
/// Reserved by Intel
_INTEL209 = 209,
/// KM211 KM32 32-bit processor
_KM32 = 210,
/// KM211 KMX32 32-bit processor
_KMX32 = 211,
/// KM211 KMX16 16-bit processor
_KMX16 = 212,
/// KM211 KMX8 8-bit processor
_KMX8 = 213,
/// KM211 KVARC processor
_KVARC = 214,
/// Paneve CDP architecture family
_CDP = 215,
/// Cognitive Smart Memory Processor
_COGE = 216,
/// iCelero CoolEngine
_COOL = 217,
/// Nanoradio Optimized RISC
_NORC = 218,
/// CSR Kalimba architecture family
_CSR_KALIMBA = 219,
/// AMD GPU architecture
_AMDGPU = 224,
/// RISC-V
_RISCV = 243,
/// Lanai 32-bit processor
_LANAI = 244,
/// Linux kernel bpf virtual machine
_BPF = 247,
};
/// Section data should be writable during execution.
pub const SHF_WRITE = 0x1;
/// Section occupies memory during program execution.
pub const SHF_ALLOC = 0x2;
/// Section contains executable machine instructions.
pub const SHF_EXECINSTR = 0x4;
/// The data in this section may be merged.
pub const SHF_MERGE = 0x10;
/// The data in this section is null-terminated strings.
pub const SHF_STRINGS = 0x20;
/// A field in this section holds a section header table index.
pub const SHF_INFO_LINK = 0x40;
/// Adds special ordering requirements for link editors.
pub const SHF_LINK_ORDER = 0x80;
/// This section requires special OS-specific processing to avoid incorrect
/// behavior.
pub const SHF_OS_NONCONFORMING = 0x100;
/// This section is a member of a section group.
pub const SHF_GROUP = 0x200;
/// This section holds Thread-Local Storage.
pub const SHF_TLS = 0x400;
/// Identifies a section containing compressed data.
pub const SHF_COMPRESSED = 0x800;
/// This section is excluded from the final executable or shared library.
pub const SHF_EXCLUDE = 0x80000000;
/// Start of target-specific flags.
pub const SHF_MASKOS = 0x0ff00000;
/// Bits indicating processor-specific flags.
pub const SHF_MASKPROC = 0xf0000000;
/// All sections with the "d" flag are grouped together by the linker to form
/// the data section and the dp register is set to the start of the section by
/// the boot code.
pub const XCORE_SHF_DP_SECTION = 0x10000000;
/// All sections with the "c" flag are grouped together by the linker to form
/// the constant pool and the cp register is set to the start of the constant
/// pool by the boot code.
pub const XCORE_SHF_CP_SECTION = 0x20000000;
/// If an object file section does not have this flag set, then it may not hold
/// more than 2GB and can be freely referred to in objects using smaller code
/// models. Otherwise, only objects using larger code models can refer to them.
/// For example, a medium code model object can refer to data in a section that
/// sets this flag besides being able to refer to data in a section that does
/// not set it; likewise, a small code model object can refer only to code in a
/// section that does not set this flag.
pub const SHF_X86_64_LARGE = 0x10000000;
/// All sections with the GPREL flag are grouped into a global data area
/// for faster accesses
pub const SHF_HEX_GPREL = 0x10000000;
/// Section contains text/data which may be replicated in other sections.
/// Linker must retain only one copy.
pub const SHF_MIPS_NODUPES = 0x01000000;
/// Linker must generate implicit hidden weak names.
pub const SHF_MIPS_NAMES = 0x02000000;
/// Section data local to process.
pub const SHF_MIPS_LOCAL = 0x04000000;
/// Do not strip this section.
pub const SHF_MIPS_NOSTRIP = 0x08000000;
/// Section must be part of global data area.
pub const SHF_MIPS_GPREL = 0x10000000;
/// This section should be merged.
pub const SHF_MIPS_MERGE = 0x20000000;
/// Address size to be inferred from section entry size.
pub const SHF_MIPS_ADDR = 0x40000000;
/// Section data is string data by default.
pub const SHF_MIPS_STRING = 0x80000000;
/// Make code section unreadable when in execute-only mode
pub const SHF_ARM_PURECODE = 0x2000000;
/// Execute
pub const PF_X = 1;
/// Write
pub const PF_W = 2;
/// Read
pub const PF_R = 4;
/// Bits for operating system-specific semantics.
pub const PF_MASKOS = 0x0ff00000;
/// Bits for processor-specific semantics.
pub const PF_MASKPROC = 0xf0000000;
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