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use alloc::vec::Vec;
use core::convert::TryInto;
use core::fmt::Debug;
use core::mem;
use crate::elf;
use crate::endian::{self, Endian, Endianness, U32};
use crate::pod::Pod;
use crate::read::{
self, util, Architecture, ByteString, Bytes, Error, Export, FileFlags, Import, Object,
ObjectKind, ReadError, ReadRef, SectionIndex, StringTable, SymbolIndex,
};
use super::{
CompressionHeader, Dyn, ElfComdat, ElfComdatIterator, ElfDynamicRelocationIterator, ElfSection,
ElfSectionIterator, ElfSegment, ElfSegmentIterator, ElfSymbol, ElfSymbolIterator,
ElfSymbolTable, NoteHeader, ProgramHeader, Rel, Rela, RelocationSections, SectionHeader,
SectionTable, Sym, SymbolTable,
};
/// A 32-bit ELF object file.
///
/// This is a file that starts with [`elf::FileHeader32`], and corresponds
/// to [`crate::FileKind::Elf32`].
pub type ElfFile32<'data, Endian = Endianness, R = &'data [u8]> =
ElfFile<'data, elf::FileHeader32<Endian>, R>;
/// A 64-bit ELF object file.
///
/// This is a file that starts with [`elf::FileHeader64`], and corresponds
/// to [`crate::FileKind::Elf64`].
pub type ElfFile64<'data, Endian = Endianness, R = &'data [u8]> =
ElfFile<'data, elf::FileHeader64<Endian>, R>;
/// A partially parsed ELF file.
///
/// Most functionality is provided by the [`Object`] trait implementation.
#[derive(Debug)]
pub struct ElfFile<'data, Elf, R = &'data [u8]>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
pub(super) endian: Elf::Endian,
pub(super) data: R,
pub(super) header: &'data Elf,
pub(super) segments: &'data [Elf::ProgramHeader],
pub(super) sections: SectionTable<'data, Elf, R>,
pub(super) relocations: RelocationSections,
pub(super) symbols: SymbolTable<'data, Elf, R>,
pub(super) dynamic_symbols: SymbolTable<'data, Elf, R>,
}
impl<'data, Elf, R> ElfFile<'data, Elf, R>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
/// Parse the raw ELF file data.
pub fn parse(data: R) -> read::Result<Self> {
let header = Elf::parse(data)?;
let endian = header.endian()?;
let segments = header.program_headers(endian, data)?;
let sections = header.sections(endian, data)?;
let symbols = sections.symbols(endian, data, elf::SHT_SYMTAB)?;
// TODO: get dynamic symbols from DT_SYMTAB if there are no sections
let dynamic_symbols = sections.symbols(endian, data, elf::SHT_DYNSYM)?;
// The API we provide requires a mapping from section to relocations, so build it now.
let relocations = sections.relocation_sections(endian, symbols.section())?;
Ok(ElfFile {
endian,
data,
header,
segments,
sections,
relocations,
symbols,
dynamic_symbols,
})
}
/// Returns the endianness.
pub fn endian(&self) -> Elf::Endian {
self.endian
}
/// Returns the raw data.
pub fn data(&self) -> R {
self.data
}
/// Returns the raw ELF file header.
#[deprecated(note = "Use `elf_header` instead")]
pub fn raw_header(&self) -> &'data Elf {
self.header
}
/// Returns the raw ELF segments.
#[deprecated(note = "Use `elf_program_headers` instead")]
pub fn raw_segments(&self) -> &'data [Elf::ProgramHeader] {
self.segments
}
/// Get the raw ELF file header.
pub fn elf_header(&self) -> &'data Elf {
self.header
}
/// Get the raw ELF program headers.
///
/// Returns an empty slice if the file has no program headers.
pub fn elf_program_headers(&self) -> &'data [Elf::ProgramHeader] {
self.segments
}
/// Get the ELF section table.
///
/// Returns an empty section table if the file has no section headers.
pub fn elf_section_table(&self) -> &SectionTable<'data, Elf, R> {
&self.sections
}
/// Get the ELF symbol table.
///
/// Returns an empty symbol table if the file has no symbol table.
pub fn elf_symbol_table(&self) -> &SymbolTable<'data, Elf, R> {
&self.symbols
}
/// Get the ELF dynamic symbol table.
///
/// Returns an empty symbol table if the file has no dynamic symbol table.
pub fn elf_dynamic_symbol_table(&self) -> &SymbolTable<'data, Elf, R> {
&self.dynamic_symbols
}
/// Get a mapping for linked relocation sections.
pub fn elf_relocation_sections(&self) -> &RelocationSections {
&self.relocations
}
fn raw_section_by_name<'file>(
&'file self,
section_name: &[u8],
) -> Option<ElfSection<'data, 'file, Elf, R>> {
self.sections
.section_by_name(self.endian, section_name)
.map(|(index, section)| ElfSection {
file: self,
index,
section,
})
}
#[cfg(feature = "compression")]
fn zdebug_section_by_name<'file>(
&'file self,
section_name: &[u8],
) -> Option<ElfSection<'data, 'file, Elf, R>> {
if !section_name.starts_with(b".debug_") {
return None;
}
let mut name = Vec::with_capacity(section_name.len() + 1);
name.extend_from_slice(b".zdebug_");
name.extend_from_slice(§ion_name[7..]);
self.raw_section_by_name(&name)
}
#[cfg(not(feature = "compression"))]
fn zdebug_section_by_name<'file>(
&'file self,
_section_name: &[u8],
) -> Option<ElfSection<'data, 'file, Elf, R>> {
None
}
}
impl<'data, Elf, R> read::private::Sealed for ElfFile<'data, Elf, R>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
}
impl<'data, Elf, R> Object<'data> for ElfFile<'data, Elf, R>
where
Elf: FileHeader,
R: ReadRef<'data>,
{
type Segment<'file> = ElfSegment<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
type SegmentIterator<'file> = ElfSegmentIterator<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
type Section<'file> = ElfSection<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
type SectionIterator<'file> = ElfSectionIterator<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
type Comdat<'file> = ElfComdat<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
type ComdatIterator<'file> = ElfComdatIterator<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
type Symbol<'file> = ElfSymbol<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
type SymbolIterator<'file> = ElfSymbolIterator<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
type SymbolTable<'file> = ElfSymbolTable<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
type DynamicRelocationIterator<'file> = ElfDynamicRelocationIterator<'data, 'file, Elf, R> where Self: 'file, 'data: 'file;
fn architecture(&self) -> Architecture {
match (
self.header.e_machine(self.endian),
self.header.is_class_64(),
) {
(elf::EM_AARCH64, true) => Architecture::Aarch64,
(elf::EM_AARCH64, false) => Architecture::Aarch64_Ilp32,
(elf::EM_ARM, _) => Architecture::Arm,
(elf::EM_AVR, _) => Architecture::Avr,
(elf::EM_BPF, _) => Architecture::Bpf,
(elf::EM_CSKY, _) => Architecture::Csky,
(elf::EM_386, _) => Architecture::I386,
(elf::EM_X86_64, false) => Architecture::X86_64_X32,
(elf::EM_X86_64, true) => Architecture::X86_64,
(elf::EM_HEXAGON, _) => Architecture::Hexagon,
(elf::EM_LOONGARCH, true) => Architecture::LoongArch64,
(elf::EM_MIPS, false) => Architecture::Mips,
(elf::EM_MIPS, true) => Architecture::Mips64,
(elf::EM_MSP430, _) => Architecture::Msp430,
(elf::EM_PPC, _) => Architecture::PowerPc,
(elf::EM_PPC64, _) => Architecture::PowerPc64,
(elf::EM_RISCV, false) => Architecture::Riscv32,
(elf::EM_RISCV, true) => Architecture::Riscv64,
// This is either s390 or s390x, depending on the ELF class.
// We only support the 64-bit variant s390x here.
(elf::EM_S390, true) => Architecture::S390x,
(elf::EM_SBF, _) => Architecture::Sbf,
(elf::EM_SHARC, false) => Architecture::Sharc,
(elf::EM_SPARC, false) => Architecture::Sparc,
(elf::EM_SPARC32PLUS, false) => Architecture::Sparc32Plus,
(elf::EM_SPARCV9, true) => Architecture::Sparc64,
(elf::EM_XTENSA, false) => Architecture::Xtensa,
_ => Architecture::Unknown,
}
}
#[inline]
fn is_little_endian(&self) -> bool {
self.header.is_little_endian()
}
#[inline]
fn is_64(&self) -> bool {
self.header.is_class_64()
}
fn kind(&self) -> ObjectKind {
match self.header.e_type(self.endian) {
elf::ET_REL => ObjectKind::Relocatable,
elf::ET_EXEC => ObjectKind::Executable,
// TODO: check for `DF_1_PIE`?
elf::ET_DYN => ObjectKind::Dynamic,
elf::ET_CORE => ObjectKind::Core,
_ => ObjectKind::Unknown,
}
}
fn segments(&self) -> ElfSegmentIterator<'data, '_, Elf, R> {
ElfSegmentIterator {
file: self,
iter: self.segments.iter(),
}
}
fn section_by_name_bytes<'file>(
&'file self,
section_name: &[u8],
) -> Option<ElfSection<'data, 'file, Elf, R>> {
self.raw_section_by_name(section_name)
.or_else(|| self.zdebug_section_by_name(section_name))
}
fn section_by_index(&self, index: SectionIndex) -> read::Result<ElfSection<'data, '_, Elf, R>> {
let section = self.sections.section(index)?;
Ok(ElfSection {
file: self,
index,
section,
})
}
fn sections(&self) -> ElfSectionIterator<'data, '_, Elf, R> {
ElfSectionIterator::new(self)
}
fn comdats(&self) -> ElfComdatIterator<'data, '_, Elf, R> {
ElfComdatIterator::new(self)
}
fn symbol_by_index(&self, index: SymbolIndex) -> read::Result<ElfSymbol<'data, '_, Elf, R>> {
let symbol = self.symbols.symbol(index)?;
Ok(ElfSymbol {
endian: self.endian,
symbols: &self.symbols,
index,
symbol,
})
}
fn symbols(&self) -> ElfSymbolIterator<'data, '_, Elf, R> {
ElfSymbolIterator::new(self.endian, &self.symbols)
}
fn symbol_table(&self) -> Option<ElfSymbolTable<'data, '_, Elf, R>> {
if self.symbols.is_empty() {
return None;
}
Some(ElfSymbolTable {
endian: self.endian,
symbols: &self.symbols,
})
}
fn dynamic_symbols(&self) -> ElfSymbolIterator<'data, '_, Elf, R> {
ElfSymbolIterator::new(self.endian, &self.dynamic_symbols)
}
fn dynamic_symbol_table(&self) -> Option<ElfSymbolTable<'data, '_, Elf, R>> {
if self.dynamic_symbols.is_empty() {
return None;
}
Some(ElfSymbolTable {
endian: self.endian,
symbols: &self.dynamic_symbols,
})
}
fn dynamic_relocations<'file>(
&'file self,
) -> Option<ElfDynamicRelocationIterator<'data, 'file, Elf, R>> {
Some(ElfDynamicRelocationIterator {
section_index: SectionIndex(1),
file: self,
relocations: None,
})
}
fn imports(&self) -> read::Result<Vec<Import<'data>>> {
let versions = self.sections.versions(self.endian, self.data)?;
let mut imports = Vec::new();
for (index, symbol) in self.dynamic_symbols.enumerate() {
if symbol.is_undefined(self.endian) {
let name = symbol.name(self.endian, self.dynamic_symbols.strings())?;
if !name.is_empty() {
let library = if let Some(svt) = versions.as_ref() {
let vi = svt.version_index(self.endian, index);
svt.version(vi)?.and_then(|v| v.file())
} else {
None
}
.unwrap_or(&[]);
imports.push(Import {
name: ByteString(name),
library: ByteString(library),
});
}
}
}
Ok(imports)
}
fn exports(&self) -> read::Result<Vec<Export<'data>>> {
let mut exports = Vec::new();
for symbol in self.dynamic_symbols.iter() {
if symbol.is_definition(self.endian) {
let name = symbol.name(self.endian, self.dynamic_symbols.strings())?;
let address = symbol.st_value(self.endian).into();
exports.push(Export {
name: ByteString(name),
address,
});
}
}
Ok(exports)
}
fn has_debug_symbols(&self) -> bool {
for section in self.sections.iter() {
if let Ok(name) = self.sections.section_name(self.endian, section) {
if name == b".debug_info" || name == b".zdebug_info" {
return true;
}
}
}
false
}
fn build_id(&self) -> read::Result<Option<&'data [u8]>> {
let endian = self.endian;
// Use section headers if present, otherwise use program headers.
if !self.sections.is_empty() {
for section in self.sections.iter() {
if let Some(mut notes) = section.notes(endian, self.data)? {
while let Some(note) = notes.next()? {
if note.name() == elf::ELF_NOTE_GNU
&& note.n_type(endian) == elf::NT_GNU_BUILD_ID
{
return Ok(Some(note.desc()));
}
}
}
}
} else {
for segment in self.segments {
if let Some(mut notes) = segment.notes(endian, self.data)? {
while let Some(note) = notes.next()? {
if note.name() == elf::ELF_NOTE_GNU
&& note.n_type(endian) == elf::NT_GNU_BUILD_ID
{
return Ok(Some(note.desc()));
}
}
}
}
}
Ok(None)
}
fn gnu_debuglink(&self) -> read::Result<Option<(&'data [u8], u32)>> {
let section = match self.raw_section_by_name(b".gnu_debuglink") {
Some(section) => section,
None => return Ok(None),
};
let data = section
.section
.data(self.endian, self.data)
.read_error("Invalid ELF .gnu_debuglink section offset or size")
.map(Bytes)?;
let filename = data
.read_string_at(0)
.read_error("Missing ELF .gnu_debuglink filename")?;
let crc_offset = util::align(filename.len() + 1, 4);
let crc = data
.read_at::<U32<_>>(crc_offset)
.read_error("Missing ELF .gnu_debuglink crc")?
.get(self.endian);
Ok(Some((filename, crc)))
}
fn gnu_debugaltlink(&self) -> read::Result<Option<(&'data [u8], &'data [u8])>> {
let section = match self.raw_section_by_name(b".gnu_debugaltlink") {
Some(section) => section,
None => return Ok(None),
};
let mut data = section
.section
.data(self.endian, self.data)
.read_error("Invalid ELF .gnu_debugaltlink section offset or size")
.map(Bytes)?;
let filename = data
.read_string()
.read_error("Missing ELF .gnu_debugaltlink filename")?;
let build_id = data.0;
Ok(Some((filename, build_id)))
}
fn relative_address_base(&self) -> u64 {
0
}
fn entry(&self) -> u64 {
self.header.e_entry(self.endian).into()
}
fn flags(&self) -> FileFlags {
FileFlags::Elf {
os_abi: self.header.e_ident().os_abi,
abi_version: self.header.e_ident().abi_version,
e_flags: self.header.e_flags(self.endian),
}
}
}
/// A trait for generic access to [`elf::FileHeader32`] and [`elf::FileHeader64`].
#[allow(missing_docs)]
pub trait FileHeader: Debug + Pod {
// Ideally this would be a `u64: From<Word>`, but can't express that.
type Word: Into<u64>;
type Sword: Into<i64>;
type Endian: endian::Endian;
type ProgramHeader: ProgramHeader<Elf = Self, Endian = Self::Endian, Word = Self::Word>;
type SectionHeader: SectionHeader<Elf = Self, Endian = Self::Endian, Word = Self::Word>;
type CompressionHeader: CompressionHeader<Endian = Self::Endian, Word = Self::Word>;
type NoteHeader: NoteHeader<Endian = Self::Endian>;
type Dyn: Dyn<Endian = Self::Endian, Word = Self::Word>;
type Sym: Sym<Endian = Self::Endian, Word = Self::Word>;
type Rel: Rel<Endian = Self::Endian, Word = Self::Word>;
type Rela: Rela<Endian = Self::Endian, Word = Self::Word> + From<Self::Rel>;
/// Return true if this type is a 64-bit header.
///
/// This is a property of the type, not a value in the header data.
fn is_type_64(&self) -> bool;
/// Return true if this type is a 64-bit header.
///
/// This is a property of the type, not a value in the header data.
///
/// This is the same as [`Self::is_type_64`], but is non-dispatchable.
fn is_type_64_sized() -> bool
where
Self: Sized;
fn e_ident(&self) -> &elf::Ident;
fn e_type(&self, endian: Self::Endian) -> u16;
fn e_machine(&self, endian: Self::Endian) -> u16;
fn e_version(&self, endian: Self::Endian) -> u32;
fn e_entry(&self, endian: Self::Endian) -> Self::Word;
fn e_phoff(&self, endian: Self::Endian) -> Self::Word;
fn e_shoff(&self, endian: Self::Endian) -> Self::Word;
fn e_flags(&self, endian: Self::Endian) -> u32;
fn e_ehsize(&self, endian: Self::Endian) -> u16;
fn e_phentsize(&self, endian: Self::Endian) -> u16;
fn e_phnum(&self, endian: Self::Endian) -> u16;
fn e_shentsize(&self, endian: Self::Endian) -> u16;
fn e_shnum(&self, endian: Self::Endian) -> u16;
fn e_shstrndx(&self, endian: Self::Endian) -> u16;
// Provided methods.
/// Read the file header.
///
/// Also checks that the ident field in the file header is a supported format.
fn parse<'data, R: ReadRef<'data>>(data: R) -> read::Result<&'data Self> {
let header = data
.read_at::<Self>(0)
.read_error("Invalid ELF header size or alignment")?;
if !header.is_supported() {
return Err(Error("Unsupported ELF header"));
}
// TODO: Check self.e_ehsize?
Ok(header)
}
/// Check that the ident field in the file header is a supported format.
///
/// This checks the magic number, version, class, and endianness.
fn is_supported(&self) -> bool {
let ident = self.e_ident();
// TODO: Check self.e_version too? Requires endian though.
ident.magic == elf::ELFMAG
&& (self.is_type_64() || self.is_class_32())
&& (!self.is_type_64() || self.is_class_64())
&& (self.is_little_endian() || self.is_big_endian())
&& ident.version == elf::EV_CURRENT
}
fn is_class_32(&self) -> bool {
self.e_ident().class == elf::ELFCLASS32
}
fn is_class_64(&self) -> bool {
self.e_ident().class == elf::ELFCLASS64
}
fn is_little_endian(&self) -> bool {
self.e_ident().data == elf::ELFDATA2LSB
}
fn is_big_endian(&self) -> bool {
self.e_ident().data == elf::ELFDATA2MSB
}
fn endian(&self) -> read::Result<Self::Endian> {
Self::Endian::from_big_endian(self.is_big_endian()).read_error("Unsupported ELF endian")
}
/// Return the first section header, if present.
///
/// Section 0 is a special case because getting the section headers normally
/// requires `shnum`, but `shnum` may be in the first section header.
fn section_0<'data, R: ReadRef<'data>>(
&self,
endian: Self::Endian,
data: R,
) -> read::Result<Option<&'data Self::SectionHeader>> {
let shoff: u64 = self.e_shoff(endian).into();
if shoff == 0 {
// No section headers is ok.
return Ok(None);
}
let shentsize = usize::from(self.e_shentsize(endian));
if shentsize != mem::size_of::<Self::SectionHeader>() {
// Section header size must match.
return Err(Error("Invalid ELF section header entry size"));
}
data.read_at(shoff)
.map(Some)
.read_error("Invalid ELF section header offset or size")
}
/// Return the `e_phnum` field of the header. Handles extended values.
///
/// Returns `Err` for invalid values.
fn phnum<'data, R: ReadRef<'data>>(
&self,
endian: Self::Endian,
data: R,
) -> read::Result<usize> {
let e_phnum = self.e_phnum(endian);
if e_phnum < elf::PN_XNUM {
Ok(e_phnum as usize)
} else if let Some(section_0) = self.section_0(endian, data)? {
Ok(section_0.sh_info(endian) as usize)
} else {
// Section 0 must exist if e_phnum overflows.
Err(Error("Missing ELF section headers for e_phnum overflow"))
}
}
/// Return the `e_shnum` field of the header. Handles extended values.
///
/// Returns `Err` for invalid values.
fn shnum<'data, R: ReadRef<'data>>(
&self,
endian: Self::Endian,
data: R,
) -> read::Result<usize> {
let e_shnum = self.e_shnum(endian);
if e_shnum > 0 {
Ok(e_shnum as usize)
} else if let Some(section_0) = self.section_0(endian, data)? {
section_0
.sh_size(endian)
.into()
.try_into()
.ok()
.read_error("Invalid ELF extended e_shnum")
} else {
// No section headers is ok.
Ok(0)
}
}
/// Return the `e_shstrndx` field of the header. Handles extended values.
///
/// Returns `Err` for invalid values (including if the index is 0).
fn shstrndx<'data, R: ReadRef<'data>>(
&self,
endian: Self::Endian,
data: R,
) -> read::Result<u32> {
let e_shstrndx = self.e_shstrndx(endian);
let index = if e_shstrndx != elf::SHN_XINDEX {
e_shstrndx.into()
} else if let Some(section_0) = self.section_0(endian, data)? {
section_0.sh_link(endian)
} else {
// Section 0 must exist if we're trying to read e_shstrndx.
return Err(Error("Missing ELF section headers for e_shstrndx overflow"));
};
if index == 0 {
return Err(Error("Missing ELF e_shstrndx"));
}
Ok(index)
}
/// Return the slice of program headers.
///
/// Returns `Ok(&[])` if there are no program headers.
/// Returns `Err` for invalid values.
fn program_headers<'data, R: ReadRef<'data>>(
&self,
endian: Self::Endian,
data: R,
) -> read::Result<&'data [Self::ProgramHeader]> {
let phoff: u64 = self.e_phoff(endian).into();
if phoff == 0 {
// No program headers is ok.
return Ok(&[]);
}
let phnum = self.phnum(endian, data)?;
if phnum == 0 {
// No program headers is ok.
return Ok(&[]);
}
let phentsize = self.e_phentsize(endian) as usize;
if phentsize != mem::size_of::<Self::ProgramHeader>() {
// Program header size must match.
return Err(Error("Invalid ELF program header entry size"));
}
data.read_slice_at(phoff, phnum)
.read_error("Invalid ELF program header size or alignment")
}
/// Return the slice of section headers.
///
/// Returns `Ok(&[])` if there are no section headers.
/// Returns `Err` for invalid values.
fn section_headers<'data, R: ReadRef<'data>>(
&self,
endian: Self::Endian,
data: R,
) -> read::Result<&'data [Self::SectionHeader]> {
let shoff: u64 = self.e_shoff(endian).into();
if shoff == 0 {
// No section headers is ok.
return Ok(&[]);
}
let shnum = self.shnum(endian, data)?;
if shnum == 0 {
// No section headers is ok.
return Ok(&[]);
}
let shentsize = usize::from(self.e_shentsize(endian));
if shentsize != mem::size_of::<Self::SectionHeader>() {
// Section header size must match.
return Err(Error("Invalid ELF section header entry size"));
}
data.read_slice_at(shoff, shnum)
.read_error("Invalid ELF section header offset/size/alignment")
}
/// Get the section index of the section header string table.
///
/// Returns `Err` for invalid values (including if the index is 0).
fn section_strings_index<'data, R: ReadRef<'data>>(
&self,
endian: Self::Endian,
data: R,
) -> read::Result<SectionIndex> {
self.shstrndx(endian, data)
.map(|index| SectionIndex(index as usize))
}
/// Return the string table for the section headers.
fn section_strings<'data, R: ReadRef<'data>>(
&self,
endian: Self::Endian,
data: R,
sections: &[Self::SectionHeader],
) -> read::Result<StringTable<'data, R>> {
if sections.is_empty() {
return Ok(StringTable::default());
}
let index = self.section_strings_index(endian, data)?;
let shstrtab = sections.get(index.0).read_error("Invalid ELF e_shstrndx")?;
let strings = if let Some((shstrtab_offset, shstrtab_size)) = shstrtab.file_range(endian) {
let shstrtab_end = shstrtab_offset
.checked_add(shstrtab_size)
.read_error("Invalid ELF shstrtab size")?;
StringTable::new(data, shstrtab_offset, shstrtab_end)
} else {
StringTable::default()
};
Ok(strings)
}
/// Return the section table.
fn sections<'data, R: ReadRef<'data>>(
&self,
endian: Self::Endian,
data: R,
) -> read::Result<SectionTable<'data, Self, R>> {
let sections = self.section_headers(endian, data)?;
let strings = self.section_strings(endian, data, sections)?;
Ok(SectionTable::new(sections, strings))
}
/// Returns whether this is a mips64el elf file.
fn is_mips64el(&self, endian: Self::Endian) -> bool {
self.is_class_64() && self.is_little_endian() && self.e_machine(endian) == elf::EM_MIPS
}
}
impl<Endian: endian::Endian> FileHeader for elf::FileHeader32<Endian> {
type Word = u32;
type Sword = i32;
type Endian = Endian;
type ProgramHeader = elf::ProgramHeader32<Endian>;
type SectionHeader = elf::SectionHeader32<Endian>;
type CompressionHeader = elf::CompressionHeader32<Endian>;
type NoteHeader = elf::NoteHeader32<Endian>;
type Dyn = elf::Dyn32<Endian>;
type Sym = elf::Sym32<Endian>;
type Rel = elf::Rel32<Endian>;
type Rela = elf::Rela32<Endian>;
#[inline]
fn is_type_64(&self) -> bool {
false
}
#[inline]
fn is_type_64_sized() -> bool
where
Self: Sized,
{
false
}
#[inline]
fn e_ident(&self) -> &elf::Ident {
&self.e_ident
}
#[inline]
fn e_type(&self, endian: Self::Endian) -> u16 {
self.e_type.get(endian)
}
#[inline]
fn e_machine(&self, endian: Self::Endian) -> u16 {
self.e_machine.get(endian)
}
#[inline]
fn e_version(&self, endian: Self::Endian) -> u32 {
self.e_version.get(endian)
}
#[inline]
fn e_entry(&self, endian: Self::Endian) -> Self::Word {
self.e_entry.get(endian)
}
#[inline]
fn e_phoff(&self, endian: Self::Endian) -> Self::Word {
self.e_phoff.get(endian)
}
#[inline]
fn e_shoff(&self, endian: Self::Endian) -> Self::Word {
self.e_shoff.get(endian)
}
#[inline]
fn e_flags(&self, endian: Self::Endian) -> u32 {
self.e_flags.get(endian)
}
#[inline]
fn e_ehsize(&self, endian: Self::Endian) -> u16 {
self.e_ehsize.get(endian)
}
#[inline]
fn e_phentsize(&self, endian: Self::Endian) -> u16 {
self.e_phentsize.get(endian)
}
#[inline]
fn e_phnum(&self, endian: Self::Endian) -> u16 {
self.e_phnum.get(endian)
}
#[inline]
fn e_shentsize(&self, endian: Self::Endian) -> u16 {
self.e_shentsize.get(endian)
}
#[inline]
fn e_shnum(&self, endian: Self::Endian) -> u16 {
self.e_shnum.get(endian)
}
#[inline]
fn e_shstrndx(&self, endian: Self::Endian) -> u16 {
self.e_shstrndx.get(endian)
}
}
impl<Endian: endian::Endian> FileHeader for elf::FileHeader64<Endian> {
type Word = u64;
type Sword = i64;
type Endian = Endian;
type ProgramHeader = elf::ProgramHeader64<Endian>;
type SectionHeader = elf::SectionHeader64<Endian>;
type CompressionHeader = elf::CompressionHeader64<Endian>;
type NoteHeader = elf::NoteHeader32<Endian>;
type Dyn = elf::Dyn64<Endian>;
type Sym = elf::Sym64<Endian>;
type Rel = elf::Rel64<Endian>;
type Rela = elf::Rela64<Endian>;
#[inline]
fn is_type_64(&self) -> bool {
true
}
#[inline]
fn is_type_64_sized() -> bool
where
Self: Sized,
{
true
}
#[inline]
fn e_ident(&self) -> &elf::Ident {
&self.e_ident
}
#[inline]
fn e_type(&self, endian: Self::Endian) -> u16 {
self.e_type.get(endian)
}
#[inline]
fn e_machine(&self, endian: Self::Endian) -> u16 {
self.e_machine.get(endian)
}
#[inline]
fn e_version(&self, endian: Self::Endian) -> u32 {
self.e_version.get(endian)
}
#[inline]
fn e_entry(&self, endian: Self::Endian) -> Self::Word {
self.e_entry.get(endian)
}
#[inline]
fn e_phoff(&self, endian: Self::Endian) -> Self::Word {
self.e_phoff.get(endian)
}
#[inline]
fn e_shoff(&self, endian: Self::Endian) -> Self::Word {
self.e_shoff.get(endian)
}
#[inline]
fn e_flags(&self, endian: Self::Endian) -> u32 {
self.e_flags.get(endian)
}
#[inline]
fn e_ehsize(&self, endian: Self::Endian) -> u16 {
self.e_ehsize.get(endian)
}
#[inline]
fn e_phentsize(&self, endian: Self::Endian) -> u16 {
self.e_phentsize.get(endian)
}
#[inline]
fn e_phnum(&self, endian: Self::Endian) -> u16 {
self.e_phnum.get(endian)
}
#[inline]
fn e_shentsize(&self, endian: Self::Endian) -> u16 {
self.e_shentsize.get(endian)
}
#[inline]
fn e_shnum(&self, endian: Self::Endian) -> u16 {
self.e_shnum.get(endian)
}
#[inline]
fn e_shstrndx(&self, endian: Self::Endian) -> u16 {
self.e_shstrndx.get(endian)
}
}