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-rw-r--r--vendor/object/src/read/coff/comdat.rs211
-rw-r--r--vendor/object/src/read/coff/file.rs381
-rw-r--r--vendor/object/src/read/coff/import.rs220
-rw-r--r--vendor/object/src/read/coff/mod.rs66
-rw-r--r--vendor/object/src/read/coff/relocation.rs106
-rw-r--r--vendor/object/src/read/coff/section.rs585
-rw-r--r--vendor/object/src/read/coff/symbol.rs635
7 files changed, 2204 insertions, 0 deletions
diff --git a/vendor/object/src/read/coff/comdat.rs b/vendor/object/src/read/coff/comdat.rs
new file mode 100644
index 0000000..90c29be
--- /dev/null
+++ b/vendor/object/src/read/coff/comdat.rs
@@ -0,0 +1,211 @@
+use core::str;
+
+use crate::endian::LittleEndian as LE;
+use crate::pe;
+use crate::read::{
+ self, ComdatKind, ObjectComdat, ReadError, ReadRef, Result, SectionIndex, SymbolIndex,
+};
+
+use super::{CoffFile, CoffHeader, ImageSymbol};
+
+/// An iterator for the COMDAT section groups in a [`CoffBigFile`](super::CoffBigFile).
+pub type CoffBigComdatIterator<'data, 'file, R = &'data [u8]> =
+ CoffComdatIterator<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// An iterator for the COMDAT section groups in a [`CoffFile`].
+#[derive(Debug)]
+pub struct CoffComdatIterator<
+ 'data,
+ 'file,
+ R: ReadRef<'data> = &'data [u8],
+ Coff: CoffHeader = pe::ImageFileHeader,
+> {
+ pub(super) file: &'file CoffFile<'data, R, Coff>,
+ pub(super) index: usize,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> Iterator
+ for CoffComdatIterator<'data, 'file, R, Coff>
+{
+ type Item = CoffComdat<'data, 'file, R, Coff>;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ loop {
+ let index = self.index;
+ let symbol = self.file.common.symbols.symbol(index).ok()?;
+ self.index += 1 + symbol.number_of_aux_symbols() as usize;
+ if let Some(comdat) = CoffComdat::parse(self.file, symbol, index) {
+ return Some(comdat);
+ }
+ }
+ }
+}
+
+/// A COMDAT section group in a [`CoffBigFile`](super::CoffBigFile).
+///
+/// Most functionality is provided by the [`ObjectComdat`] trait implementation.
+pub type CoffBigComdat<'data, 'file, R = &'data [u8]> =
+ CoffComdat<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// A COMDAT section group in a [`CoffFile`].
+///
+/// Most functionality is provided by the [`ObjectComdat`] trait implementation.
+#[derive(Debug)]
+pub struct CoffComdat<
+ 'data,
+ 'file,
+ R: ReadRef<'data> = &'data [u8],
+ Coff: CoffHeader = pe::ImageFileHeader,
+> {
+ file: &'file CoffFile<'data, R, Coff>,
+ symbol_index: SymbolIndex,
+ symbol: &'data Coff::ImageSymbol,
+ selection: u8,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> CoffComdat<'data, 'file, R, Coff> {
+ fn parse(
+ file: &'file CoffFile<'data, R, Coff>,
+ section_symbol: &'data Coff::ImageSymbol,
+ index: usize,
+ ) -> Option<CoffComdat<'data, 'file, R, Coff>> {
+ // Must be a section symbol.
+ if !section_symbol.has_aux_section() {
+ return None;
+ }
+
+ // Auxiliary record must have a non-associative selection.
+ let aux = file.common.symbols.aux_section(index).ok()?;
+ let selection = aux.selection;
+ if selection == 0 || selection == pe::IMAGE_COMDAT_SELECT_ASSOCIATIVE {
+ return None;
+ }
+
+ // Find the COMDAT symbol.
+ let mut symbol_index = index;
+ let mut symbol = section_symbol;
+ let section_number = section_symbol.section_number();
+ loop {
+ symbol_index += 1 + symbol.number_of_aux_symbols() as usize;
+ symbol = file.common.symbols.symbol(symbol_index).ok()?;
+ if section_number == symbol.section_number() {
+ break;
+ }
+ }
+
+ Some(CoffComdat {
+ file,
+ symbol_index: SymbolIndex(symbol_index),
+ symbol,
+ selection,
+ })
+ }
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> read::private::Sealed
+ for CoffComdat<'data, 'file, R, Coff>
+{
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> ObjectComdat<'data>
+ for CoffComdat<'data, 'file, R, Coff>
+{
+ type SectionIterator = CoffComdatSectionIterator<'data, 'file, R, Coff>;
+
+ #[inline]
+ fn kind(&self) -> ComdatKind {
+ match self.selection {
+ pe::IMAGE_COMDAT_SELECT_NODUPLICATES => ComdatKind::NoDuplicates,
+ pe::IMAGE_COMDAT_SELECT_ANY => ComdatKind::Any,
+ pe::IMAGE_COMDAT_SELECT_SAME_SIZE => ComdatKind::SameSize,
+ pe::IMAGE_COMDAT_SELECT_EXACT_MATCH => ComdatKind::ExactMatch,
+ pe::IMAGE_COMDAT_SELECT_LARGEST => ComdatKind::Largest,
+ pe::IMAGE_COMDAT_SELECT_NEWEST => ComdatKind::Newest,
+ _ => ComdatKind::Unknown,
+ }
+ }
+
+ #[inline]
+ fn symbol(&self) -> SymbolIndex {
+ self.symbol_index
+ }
+
+ #[inline]
+ fn name_bytes(&self) -> Result<&[u8]> {
+ // Find the name of first symbol referring to the section.
+ self.symbol.name(self.file.common.symbols.strings())
+ }
+
+ #[inline]
+ fn name(&self) -> Result<&str> {
+ let bytes = self.name_bytes()?;
+ str::from_utf8(bytes)
+ .ok()
+ .read_error("Non UTF-8 COFF COMDAT name")
+ }
+
+ #[inline]
+ fn sections(&self) -> Self::SectionIterator {
+ CoffComdatSectionIterator {
+ file: self.file,
+ section_number: self.symbol.section_number(),
+ index: 0,
+ }
+ }
+}
+
+/// An iterator for the sections in a COMDAT section group in a [`CoffBigFile`](super::CoffBigFile).
+pub type CoffBigComdatSectionIterator<'data, 'file, R = &'data [u8]> =
+ CoffComdatSectionIterator<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// An iterator for the sections in a COMDAT section group in a [`CoffFile`].
+#[derive(Debug)]
+pub struct CoffComdatSectionIterator<
+ 'data,
+ 'file,
+ R: ReadRef<'data> = &'data [u8],
+ Coff: CoffHeader = pe::ImageFileHeader,
+> {
+ file: &'file CoffFile<'data, R, Coff>,
+ section_number: i32,
+ index: usize,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> Iterator
+ for CoffComdatSectionIterator<'data, 'file, R, Coff>
+{
+ type Item = SectionIndex;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ // Find associated COMDAT symbols.
+ // TODO: it seems gcc doesn't use associated symbols for this
+ loop {
+ let index = self.index;
+ let symbol = self.file.common.symbols.symbol(index).ok()?;
+ self.index += 1 + symbol.number_of_aux_symbols() as usize;
+
+ // Must be a section symbol.
+ if !symbol.has_aux_section() {
+ continue;
+ }
+
+ let section_number = symbol.section_number();
+
+ let aux = self.file.common.symbols.aux_section(index).ok()?;
+ if aux.selection == pe::IMAGE_COMDAT_SELECT_ASSOCIATIVE {
+ let number = if Coff::is_type_bigobj() {
+ u32::from(aux.number.get(LE)) | (u32::from(aux.high_number.get(LE)) << 16)
+ } else {
+ u32::from(aux.number.get(LE))
+ };
+ if number as i32 == self.section_number {
+ return Some(SectionIndex(section_number as usize));
+ }
+ } else if aux.selection != 0 {
+ if section_number == self.section_number {
+ return Some(SectionIndex(section_number as usize));
+ }
+ }
+ }
+ }
+}
diff --git a/vendor/object/src/read/coff/file.rs b/vendor/object/src/read/coff/file.rs
new file mode 100644
index 0000000..40b9e70
--- /dev/null
+++ b/vendor/object/src/read/coff/file.rs
@@ -0,0 +1,381 @@
+use alloc::vec::Vec;
+use core::fmt::Debug;
+
+use crate::read::{
+ self, Architecture, Export, FileFlags, Import, NoDynamicRelocationIterator, Object, ObjectKind,
+ ObjectSection, ReadError, ReadRef, Result, SectionIndex, SubArchitecture, SymbolIndex,
+};
+use crate::{pe, LittleEndian as LE, Pod};
+
+use super::{
+ CoffComdat, CoffComdatIterator, CoffSection, CoffSectionIterator, CoffSegment,
+ CoffSegmentIterator, CoffSymbol, CoffSymbolIterator, CoffSymbolTable, ImageSymbol,
+ SectionTable, SymbolTable,
+};
+
+/// The common parts of `PeFile` and `CoffFile`.
+#[derive(Debug)]
+pub(crate) struct CoffCommon<'data, R: ReadRef<'data>, Coff: CoffHeader = pe::ImageFileHeader> {
+ pub(crate) sections: SectionTable<'data>,
+ pub(crate) symbols: SymbolTable<'data, R, Coff>,
+ pub(crate) image_base: u64,
+}
+
+/// A COFF bigobj object file with 32-bit section numbers.
+///
+/// This is a file that starts with [`pe::AnonObjectHeaderBigobj`], and corresponds
+/// to [`crate::FileKind::CoffBig`].
+///
+/// Most functionality is provided by the [`Object`] trait implementation.
+pub type CoffBigFile<'data, R = &'data [u8]> = CoffFile<'data, R, pe::AnonObjectHeaderBigobj>;
+
+/// A COFF object file.
+///
+/// This is a file that starts with [`pe::ImageFileHeader`], and corresponds
+/// to [`crate::FileKind::Coff`].
+///
+/// Most functionality is provided by the [`Object`] trait implementation.
+#[derive(Debug)]
+pub struct CoffFile<'data, R: ReadRef<'data> = &'data [u8], Coff: CoffHeader = pe::ImageFileHeader>
+{
+ pub(super) header: &'data Coff,
+ pub(super) common: CoffCommon<'data, R, Coff>,
+ pub(super) data: R,
+}
+
+impl<'data, R: ReadRef<'data>, Coff: CoffHeader> CoffFile<'data, R, Coff> {
+ /// Parse the raw COFF file data.
+ pub fn parse(data: R) -> Result<Self> {
+ let mut offset = 0;
+ let header = Coff::parse(data, &mut offset)?;
+ let sections = header.sections(data, offset)?;
+ let symbols = header.symbols(data)?;
+
+ Ok(CoffFile {
+ header,
+ common: CoffCommon {
+ sections,
+ symbols,
+ image_base: 0,
+ },
+ data,
+ })
+ }
+}
+
+impl<'data, R: ReadRef<'data>, Coff: CoffHeader> read::private::Sealed
+ for CoffFile<'data, R, Coff>
+{
+}
+
+impl<'data, 'file, R, Coff> Object<'data, 'file> for CoffFile<'data, R, Coff>
+where
+ 'data: 'file,
+ R: 'file + ReadRef<'data>,
+ Coff: CoffHeader,
+{
+ type Segment = CoffSegment<'data, 'file, R, Coff>;
+ type SegmentIterator = CoffSegmentIterator<'data, 'file, R, Coff>;
+ type Section = CoffSection<'data, 'file, R, Coff>;
+ type SectionIterator = CoffSectionIterator<'data, 'file, R, Coff>;
+ type Comdat = CoffComdat<'data, 'file, R, Coff>;
+ type ComdatIterator = CoffComdatIterator<'data, 'file, R, Coff>;
+ type Symbol = CoffSymbol<'data, 'file, R, Coff>;
+ type SymbolIterator = CoffSymbolIterator<'data, 'file, R, Coff>;
+ type SymbolTable = CoffSymbolTable<'data, 'file, R, Coff>;
+ type DynamicRelocationIterator = NoDynamicRelocationIterator;
+
+ fn architecture(&self) -> Architecture {
+ match self.header.machine() {
+ pe::IMAGE_FILE_MACHINE_ARMNT => Architecture::Arm,
+ pe::IMAGE_FILE_MACHINE_ARM64 | pe::IMAGE_FILE_MACHINE_ARM64EC => Architecture::Aarch64,
+ pe::IMAGE_FILE_MACHINE_I386 => Architecture::I386,
+ pe::IMAGE_FILE_MACHINE_AMD64 => Architecture::X86_64,
+ _ => Architecture::Unknown,
+ }
+ }
+
+ fn sub_architecture(&self) -> Option<SubArchitecture> {
+ match self.header.machine() {
+ pe::IMAGE_FILE_MACHINE_ARM64EC => Some(SubArchitecture::Arm64EC),
+ _ => None,
+ }
+ }
+
+ #[inline]
+ fn is_little_endian(&self) -> bool {
+ true
+ }
+
+ #[inline]
+ fn is_64(&self) -> bool {
+ // Windows COFF is always 32-bit, even for 64-bit architectures. This could be confusing.
+ false
+ }
+
+ fn kind(&self) -> ObjectKind {
+ ObjectKind::Relocatable
+ }
+
+ fn segments(&'file self) -> CoffSegmentIterator<'data, 'file, R, Coff> {
+ CoffSegmentIterator {
+ file: self,
+ iter: self.common.sections.iter(),
+ }
+ }
+
+ fn section_by_name_bytes(
+ &'file self,
+ section_name: &[u8],
+ ) -> Option<CoffSection<'data, 'file, R, Coff>> {
+ self.sections()
+ .find(|section| section.name_bytes() == Ok(section_name))
+ }
+
+ fn section_by_index(
+ &'file self,
+ index: SectionIndex,
+ ) -> Result<CoffSection<'data, 'file, R, Coff>> {
+ let section = self.common.sections.section(index.0)?;
+ Ok(CoffSection {
+ file: self,
+ index,
+ section,
+ })
+ }
+
+ fn sections(&'file self) -> CoffSectionIterator<'data, 'file, R, Coff> {
+ CoffSectionIterator {
+ file: self,
+ iter: self.common.sections.iter().enumerate(),
+ }
+ }
+
+ fn comdats(&'file self) -> CoffComdatIterator<'data, 'file, R, Coff> {
+ CoffComdatIterator {
+ file: self,
+ index: 0,
+ }
+ }
+
+ fn symbol_by_index(
+ &'file self,
+ index: SymbolIndex,
+ ) -> Result<CoffSymbol<'data, 'file, R, Coff>> {
+ let symbol = self.common.symbols.symbol(index.0)?;
+ Ok(CoffSymbol {
+ file: &self.common,
+ index,
+ symbol,
+ })
+ }
+
+ fn symbols(&'file self) -> CoffSymbolIterator<'data, 'file, R, Coff> {
+ CoffSymbolIterator {
+ file: &self.common,
+ index: 0,
+ }
+ }
+
+ #[inline]
+ fn symbol_table(&'file self) -> Option<CoffSymbolTable<'data, 'file, R, Coff>> {
+ Some(CoffSymbolTable { file: &self.common })
+ }
+
+ fn dynamic_symbols(&'file self) -> CoffSymbolIterator<'data, 'file, R, Coff> {
+ CoffSymbolIterator {
+ file: &self.common,
+ // Hack: don't return any.
+ index: self.common.symbols.len(),
+ }
+ }
+
+ #[inline]
+ fn dynamic_symbol_table(&'file self) -> Option<CoffSymbolTable<'data, 'file, R, Coff>> {
+ None
+ }
+
+ #[inline]
+ fn dynamic_relocations(&'file self) -> Option<NoDynamicRelocationIterator> {
+ None
+ }
+
+ #[inline]
+ fn imports(&self) -> Result<Vec<Import<'data>>> {
+ // TODO: this could return undefined symbols, but not needed yet.
+ Ok(Vec::new())
+ }
+
+ #[inline]
+ fn exports(&self) -> Result<Vec<Export<'data>>> {
+ // TODO: this could return global symbols, but not needed yet.
+ Ok(Vec::new())
+ }
+
+ fn has_debug_symbols(&self) -> bool {
+ self.section_by_name(".debug_info").is_some()
+ }
+
+ fn relative_address_base(&self) -> u64 {
+ 0
+ }
+
+ #[inline]
+ fn entry(&self) -> u64 {
+ 0
+ }
+
+ fn flags(&self) -> FileFlags {
+ FileFlags::Coff {
+ characteristics: self.header.characteristics(),
+ }
+ }
+}
+
+/// Read the `class_id` field from a [`pe::AnonObjectHeader`].
+///
+/// This can be used to determine the format of the header.
+pub fn anon_object_class_id<'data, R: ReadRef<'data>>(data: R) -> Result<pe::ClsId> {
+ let header = data
+ .read_at::<pe::AnonObjectHeader>(0)
+ .read_error("Invalid anon object header size or alignment")?;
+ Ok(header.class_id)
+}
+
+/// A trait for generic access to [`pe::ImageFileHeader`] and [`pe::AnonObjectHeaderBigobj`].
+#[allow(missing_docs)]
+pub trait CoffHeader: Debug + Pod {
+ type ImageSymbol: ImageSymbol;
+ type ImageSymbolBytes: Debug + Pod;
+
+ /// Return true if this type is [`pe::AnonObjectHeaderBigobj`].
+ ///
+ /// This is a property of the type, not a value in the header data.
+ fn is_type_bigobj() -> bool;
+
+ fn machine(&self) -> u16;
+ fn number_of_sections(&self) -> u32;
+ fn pointer_to_symbol_table(&self) -> u32;
+ fn number_of_symbols(&self) -> u32;
+ fn characteristics(&self) -> u16;
+
+ /// Read the file header.
+ ///
+ /// `data` must be the entire file data.
+ /// `offset` must be the file header offset. It is updated to point after the optional header,
+ /// which is where the section headers are located.
+ fn parse<'data, R: ReadRef<'data>>(data: R, offset: &mut u64) -> read::Result<&'data Self>;
+
+ /// Read the section table.
+ ///
+ /// `data` must be the entire file data.
+ /// `offset` must be after the optional file header.
+ #[inline]
+ fn sections<'data, R: ReadRef<'data>>(
+ &self,
+ data: R,
+ offset: u64,
+ ) -> read::Result<SectionTable<'data>> {
+ SectionTable::parse(self, data, offset)
+ }
+
+ /// Read the symbol table and string table.
+ ///
+ /// `data` must be the entire file data.
+ #[inline]
+ fn symbols<'data, R: ReadRef<'data>>(
+ &self,
+ data: R,
+ ) -> read::Result<SymbolTable<'data, R, Self>> {
+ SymbolTable::parse(self, data)
+ }
+}
+
+impl CoffHeader for pe::ImageFileHeader {
+ type ImageSymbol = pe::ImageSymbol;
+ type ImageSymbolBytes = pe::ImageSymbolBytes;
+
+ fn is_type_bigobj() -> bool {
+ false
+ }
+
+ fn machine(&self) -> u16 {
+ self.machine.get(LE)
+ }
+
+ fn number_of_sections(&self) -> u32 {
+ self.number_of_sections.get(LE).into()
+ }
+
+ fn pointer_to_symbol_table(&self) -> u32 {
+ self.pointer_to_symbol_table.get(LE)
+ }
+
+ fn number_of_symbols(&self) -> u32 {
+ self.number_of_symbols.get(LE)
+ }
+
+ fn characteristics(&self) -> u16 {
+ self.characteristics.get(LE)
+ }
+
+ fn parse<'data, R: ReadRef<'data>>(data: R, offset: &mut u64) -> read::Result<&'data Self> {
+ let header = data
+ .read::<pe::ImageFileHeader>(offset)
+ .read_error("Invalid COFF file header size or alignment")?;
+
+ // Skip over the optional header.
+ *offset = offset
+ .checked_add(header.size_of_optional_header.get(LE).into())
+ .read_error("Invalid COFF optional header size")?;
+
+ // TODO: maybe validate that the machine is known?
+ Ok(header)
+ }
+}
+
+impl CoffHeader for pe::AnonObjectHeaderBigobj {
+ type ImageSymbol = pe::ImageSymbolEx;
+ type ImageSymbolBytes = pe::ImageSymbolExBytes;
+
+ fn is_type_bigobj() -> bool {
+ true
+ }
+
+ fn machine(&self) -> u16 {
+ self.machine.get(LE)
+ }
+
+ fn number_of_sections(&self) -> u32 {
+ self.number_of_sections.get(LE)
+ }
+
+ fn pointer_to_symbol_table(&self) -> u32 {
+ self.pointer_to_symbol_table.get(LE)
+ }
+
+ fn number_of_symbols(&self) -> u32 {
+ self.number_of_symbols.get(LE)
+ }
+
+ fn characteristics(&self) -> u16 {
+ 0
+ }
+
+ fn parse<'data, R: ReadRef<'data>>(data: R, offset: &mut u64) -> read::Result<&'data Self> {
+ let header = data
+ .read::<pe::AnonObjectHeaderBigobj>(offset)
+ .read_error("Invalid COFF bigobj file header size or alignment")?;
+
+ if header.sig1.get(LE) != pe::IMAGE_FILE_MACHINE_UNKNOWN
+ || header.sig2.get(LE) != 0xffff
+ || header.version.get(LE) < 2
+ || header.class_id != pe::ANON_OBJECT_HEADER_BIGOBJ_CLASS_ID
+ {
+ return Err(read::Error("Invalid COFF bigobj header values"));
+ }
+
+ // TODO: maybe validate that the machine is known?
+ Ok(header)
+ }
+}
diff --git a/vendor/object/src/read/coff/import.rs b/vendor/object/src/read/coff/import.rs
new file mode 100644
index 0000000..a296ac3
--- /dev/null
+++ b/vendor/object/src/read/coff/import.rs
@@ -0,0 +1,220 @@
+//! Support for reading short import files.
+//!
+//! These are used by some Windows linkers as a more compact way to describe
+//! dynamically imported symbols.
+
+use crate::read::{Architecture, Error, ReadError, ReadRef, Result};
+use crate::{pe, ByteString, Bytes, LittleEndian as LE, SubArchitecture};
+
+/// A Windows short form description of a symbol to import.
+///
+/// Used in Windows import libraries to provide a mapping from
+/// a symbol name to a DLL export. This is not an object file.
+///
+/// This is a file that starts with [`pe::ImportObjectHeader`], and corresponds
+/// to [`crate::FileKind::CoffImport`].
+#[derive(Debug, Clone)]
+pub struct ImportFile<'data> {
+ header: &'data pe::ImportObjectHeader,
+ kind: ImportType,
+ dll: ByteString<'data>,
+ symbol: ByteString<'data>,
+ import: Option<ByteString<'data>>,
+}
+
+impl<'data> ImportFile<'data> {
+ /// Parse it.
+ pub fn parse<R: ReadRef<'data>>(data: R) -> Result<Self> {
+ let mut offset = 0;
+ let header = pe::ImportObjectHeader::parse(data, &mut offset)?;
+ let data = header.parse_data(data, &mut offset)?;
+
+ // Unmangles a name by removing a `?`, `@` or `_` prefix.
+ fn strip_prefix(s: &[u8]) -> &[u8] {
+ match s.split_first() {
+ Some((b, rest)) if [b'?', b'@', b'_'].contains(b) => rest,
+ _ => s,
+ }
+ }
+ Ok(Self {
+ header,
+ dll: data.dll,
+ symbol: data.symbol,
+ kind: match header.import_type() {
+ pe::IMPORT_OBJECT_CODE => ImportType::Code,
+ pe::IMPORT_OBJECT_DATA => ImportType::Data,
+ pe::IMPORT_OBJECT_CONST => ImportType::Const,
+ _ => return Err(Error("Invalid COFF import library import type")),
+ },
+ import: match header.name_type() {
+ pe::IMPORT_OBJECT_ORDINAL => None,
+ pe::IMPORT_OBJECT_NAME => Some(data.symbol()),
+ pe::IMPORT_OBJECT_NAME_NO_PREFIX => Some(strip_prefix(data.symbol())),
+ pe::IMPORT_OBJECT_NAME_UNDECORATE => Some(
+ strip_prefix(data.symbol())
+ .split(|&b| b == b'@')
+ .next()
+ .unwrap(),
+ ),
+ pe::IMPORT_OBJECT_NAME_EXPORTAS => data.export(),
+ _ => return Err(Error("Unknown COFF import library name type")),
+ }
+ .map(ByteString),
+ })
+ }
+
+ /// Get the machine type.
+ pub fn architecture(&self) -> Architecture {
+ match self.header.machine.get(LE) {
+ pe::IMAGE_FILE_MACHINE_ARMNT => Architecture::Arm,
+ pe::IMAGE_FILE_MACHINE_ARM64 | pe::IMAGE_FILE_MACHINE_ARM64EC => Architecture::Aarch64,
+ pe::IMAGE_FILE_MACHINE_I386 => Architecture::I386,
+ pe::IMAGE_FILE_MACHINE_AMD64 => Architecture::X86_64,
+ _ => Architecture::Unknown,
+ }
+ }
+
+ /// Get the sub machine type, if available.
+ pub fn sub_architecture(&self) -> Option<SubArchitecture> {
+ match self.header.machine.get(LE) {
+ pe::IMAGE_FILE_MACHINE_ARM64EC => Some(SubArchitecture::Arm64EC),
+ _ => None,
+ }
+ }
+
+ /// The public symbol name.
+ pub fn symbol(&self) -> &'data [u8] {
+ self.symbol.0
+ }
+
+ /// The name of the DLL to import the symbol from.
+ pub fn dll(&self) -> &'data [u8] {
+ self.dll.0
+ }
+
+ /// The name exported from the DLL.
+ pub fn import(&self) -> ImportName<'data> {
+ match self.import {
+ Some(name) => ImportName::Name(name.0),
+ None => ImportName::Ordinal(self.header.ordinal_or_hint.get(LE)),
+ }
+ }
+
+ /// The type of import. Usually either a function or data.
+ pub fn import_type(&self) -> ImportType {
+ self.kind
+ }
+}
+
+/// The name or ordinal to import from a DLL.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum ImportName<'data> {
+ /// Import by ordinal. Ordinarily this is a 1-based index.
+ Ordinal(u16),
+ /// Import by name.
+ Name(&'data [u8]),
+}
+
+/// The kind of import symbol.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum ImportType {
+ /// An executable code symbol.
+ Code,
+ /// A data symbol.
+ Data,
+ /// A constant value.
+ Const,
+}
+
+impl pe::ImportObjectHeader {
+ /// Read the short import header.
+ ///
+ /// Also checks that the signature and version are valid.
+ /// Directly following this header will be the string data.
+ pub fn parse<'data, R: ReadRef<'data>>(data: R, offset: &mut u64) -> Result<&'data Self> {
+ let header = data
+ .read::<pe::ImportObjectHeader>(offset)
+ .read_error("Invalid COFF import library header size")?;
+ if header.sig1.get(LE) != 0 || header.sig2.get(LE) != pe::IMPORT_OBJECT_HDR_SIG2 {
+ Err(Error("Invalid COFF import library header"))
+ } else if header.version.get(LE) != 0 {
+ Err(Error("Unknown COFF import library header version"))
+ } else {
+ Ok(header)
+ }
+ }
+
+ /// Parse the data following the header.
+ pub fn parse_data<'data, R: ReadRef<'data>>(
+ &self,
+ data: R,
+ offset: &mut u64,
+ ) -> Result<ImportObjectData<'data>> {
+ let mut data = Bytes(
+ data.read_bytes(offset, u64::from(self.size_of_data.get(LE)))
+ .read_error("Invalid COFF import library data size")?,
+ );
+ let symbol = data
+ .read_string()
+ .map(ByteString)
+ .read_error("Could not read COFF import library symbol name")?;
+ let dll = data
+ .read_string()
+ .map(ByteString)
+ .read_error("Could not read COFF import library DLL name")?;
+ let export = if self.name_type() == pe::IMPORT_OBJECT_NAME_EXPORTAS {
+ data.read_string()
+ .map(ByteString)
+ .map(Some)
+ .read_error("Could not read COFF import library export name")?
+ } else {
+ None
+ };
+ Ok(ImportObjectData {
+ symbol,
+ dll,
+ export,
+ })
+ }
+
+ /// The type of import.
+ ///
+ /// This is one of the `IMPORT_OBJECT_*` constants.
+ pub fn import_type(&self) -> u16 {
+ self.name_type.get(LE) & pe::IMPORT_OBJECT_TYPE_MASK
+ }
+
+ /// The type of import name.
+ ///
+ /// This is one of the `IMPORT_OBJECT_*` constants.
+ pub fn name_type(&self) -> u16 {
+ (self.name_type.get(LE) >> pe::IMPORT_OBJECT_NAME_SHIFT) & pe::IMPORT_OBJECT_NAME_MASK
+ }
+}
+
+/// The data following [`pe::ImportObjectHeader`].
+#[derive(Debug, Clone)]
+pub struct ImportObjectData<'data> {
+ symbol: ByteString<'data>,
+ dll: ByteString<'data>,
+ export: Option<ByteString<'data>>,
+}
+
+impl<'data> ImportObjectData<'data> {
+ /// The public symbol name.
+ pub fn symbol(&self) -> &'data [u8] {
+ self.symbol.0
+ }
+
+ /// The name of the DLL to import the symbol from.
+ pub fn dll(&self) -> &'data [u8] {
+ self.dll.0
+ }
+
+ /// The name exported from the DLL.
+ ///
+ /// This is only set if the name is not derived from the symbol name.
+ pub fn export(&self) -> Option<&'data [u8]> {
+ self.export.map(|export| export.0)
+ }
+}
diff --git a/vendor/object/src/read/coff/mod.rs b/vendor/object/src/read/coff/mod.rs
new file mode 100644
index 0000000..de397da
--- /dev/null
+++ b/vendor/object/src/read/coff/mod.rs
@@ -0,0 +1,66 @@
+//! Support for reading Windows COFF files.
+//!
+//! Traits are used to abstract over the difference between COFF object files
+//! and COFF bigobj files. The primary trait for this is [`CoffHeader`].
+//!
+//! ## High level API
+//!
+//! [`CoffFile`] implements the [`Object`](crate::read::Object) trait for
+//! COFF files. [`CoffFile`] is parameterised by [`CoffHeader`].
+//! The default parameter allows reading regular COFF object files,
+//! while the type alias [`CoffBigFile`] allows reading COFF bigobj files.
+//!
+//! [`ImportFile`] allows reading COFF short imports that are used in import
+//! libraries. Currently these are not integrated with the unified read API.
+//!
+//! ## Low level API
+//!
+//! The [`CoffHeader`] trait can be directly used to parse both COFF
+//! object files (which start with [`pe::ImageFileHeader`]) and COFF bigobj
+//! files (which start with [`pe::AnonObjectHeaderBigobj`]).
+//!
+//! ### Example for low level API
+//! ```no_run
+//! use object::pe;
+//! use object::read::coff::{CoffHeader, ImageSymbol as _};
+//! use std::error::Error;
+//! use std::fs;
+//!
+//! /// Reads a file and displays the name of each section and symbol.
+//! fn main() -> Result<(), Box<dyn Error>> {
+//! # #[cfg(feature = "std")] {
+//! let data = fs::read("path/to/binary")?;
+//! let mut offset = 0;
+//! let header = pe::ImageFileHeader::parse(&*data, &mut offset)?;
+//! let sections = header.sections(&*data, offset)?;
+//! let symbols = header.symbols(&*data)?;
+//! for section in sections.iter() {
+//! println!("{}", String::from_utf8_lossy(section.name(symbols.strings())?));
+//! }
+//! for (_index, symbol) in symbols.iter() {
+//! println!("{}", String::from_utf8_lossy(symbol.name(symbols.strings())?));
+//! }
+//! # }
+//! Ok(())
+//! }
+//! ```
+#[cfg(doc)]
+use crate::pe;
+
+mod file;
+pub use file::*;
+
+mod section;
+pub use section::*;
+
+mod symbol;
+pub use symbol::*;
+
+mod relocation;
+pub use relocation::*;
+
+mod comdat;
+pub use comdat::*;
+
+mod import;
+pub use import::*;
diff --git a/vendor/object/src/read/coff/relocation.rs b/vendor/object/src/read/coff/relocation.rs
new file mode 100644
index 0000000..e990944
--- /dev/null
+++ b/vendor/object/src/read/coff/relocation.rs
@@ -0,0 +1,106 @@
+use alloc::fmt;
+use core::slice;
+
+use crate::endian::LittleEndian as LE;
+use crate::pe;
+use crate::read::{
+ ReadRef, Relocation, RelocationEncoding, RelocationKind, RelocationTarget, SymbolIndex,
+};
+
+use super::{CoffFile, CoffHeader};
+
+/// An iterator for the relocations in a [`CoffBigSection`](super::CoffBigSection).
+pub type CoffBigRelocationIterator<'data, 'file, R = &'data [u8]> =
+ CoffRelocationIterator<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// An iterator for the relocations in a [`CoffSection`](super::CoffSection).
+pub struct CoffRelocationIterator<
+ 'data,
+ 'file,
+ R: ReadRef<'data> = &'data [u8],
+ Coff: CoffHeader = pe::ImageFileHeader,
+> {
+ pub(super) file: &'file CoffFile<'data, R, Coff>,
+ pub(super) iter: slice::Iter<'data, pe::ImageRelocation>,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> Iterator
+ for CoffRelocationIterator<'data, 'file, R, Coff>
+{
+ type Item = (u64, Relocation);
+
+ fn next(&mut self) -> Option<Self::Item> {
+ self.iter.next().map(|relocation| {
+ let (kind, size, addend) = match self.file.header.machine() {
+ pe::IMAGE_FILE_MACHINE_ARMNT => match relocation.typ.get(LE) {
+ pe::IMAGE_REL_ARM_ADDR32 => (RelocationKind::Absolute, 32, 0),
+ pe::IMAGE_REL_ARM_ADDR32NB => (RelocationKind::ImageOffset, 32, 0),
+ pe::IMAGE_REL_ARM_REL32 => (RelocationKind::Relative, 32, -4),
+ pe::IMAGE_REL_ARM_SECTION => (RelocationKind::SectionIndex, 16, 0),
+ pe::IMAGE_REL_ARM_SECREL => (RelocationKind::SectionOffset, 32, 0),
+ typ => (RelocationKind::Coff(typ), 0, 0),
+ },
+ pe::IMAGE_FILE_MACHINE_ARM64 | pe::IMAGE_FILE_MACHINE_ARM64EC => {
+ match relocation.typ.get(LE) {
+ pe::IMAGE_REL_ARM64_ADDR32 => (RelocationKind::Absolute, 32, 0),
+ pe::IMAGE_REL_ARM64_ADDR32NB => (RelocationKind::ImageOffset, 32, 0),
+ pe::IMAGE_REL_ARM64_SECREL => (RelocationKind::SectionOffset, 32, 0),
+ pe::IMAGE_REL_ARM64_SECTION => (RelocationKind::SectionIndex, 16, 0),
+ pe::IMAGE_REL_ARM64_ADDR64 => (RelocationKind::Absolute, 64, 0),
+ pe::IMAGE_REL_ARM64_REL32 => (RelocationKind::Relative, 32, -4),
+ typ => (RelocationKind::Coff(typ), 0, 0),
+ }
+ }
+ pe::IMAGE_FILE_MACHINE_I386 => match relocation.typ.get(LE) {
+ pe::IMAGE_REL_I386_DIR16 => (RelocationKind::Absolute, 16, 0),
+ pe::IMAGE_REL_I386_REL16 => (RelocationKind::Relative, 16, 0),
+ pe::IMAGE_REL_I386_DIR32 => (RelocationKind::Absolute, 32, 0),
+ pe::IMAGE_REL_I386_DIR32NB => (RelocationKind::ImageOffset, 32, 0),
+ pe::IMAGE_REL_I386_SECTION => (RelocationKind::SectionIndex, 16, 0),
+ pe::IMAGE_REL_I386_SECREL => (RelocationKind::SectionOffset, 32, 0),
+ pe::IMAGE_REL_I386_SECREL7 => (RelocationKind::SectionOffset, 7, 0),
+ pe::IMAGE_REL_I386_REL32 => (RelocationKind::Relative, 32, -4),
+ typ => (RelocationKind::Coff(typ), 0, 0),
+ },
+ pe::IMAGE_FILE_MACHINE_AMD64 => match relocation.typ.get(LE) {
+ pe::IMAGE_REL_AMD64_ADDR64 => (RelocationKind::Absolute, 64, 0),
+ pe::IMAGE_REL_AMD64_ADDR32 => (RelocationKind::Absolute, 32, 0),
+ pe::IMAGE_REL_AMD64_ADDR32NB => (RelocationKind::ImageOffset, 32, 0),
+ pe::IMAGE_REL_AMD64_REL32 => (RelocationKind::Relative, 32, -4),
+ pe::IMAGE_REL_AMD64_REL32_1 => (RelocationKind::Relative, 32, -5),
+ pe::IMAGE_REL_AMD64_REL32_2 => (RelocationKind::Relative, 32, -6),
+ pe::IMAGE_REL_AMD64_REL32_3 => (RelocationKind::Relative, 32, -7),
+ pe::IMAGE_REL_AMD64_REL32_4 => (RelocationKind::Relative, 32, -8),
+ pe::IMAGE_REL_AMD64_REL32_5 => (RelocationKind::Relative, 32, -9),
+ pe::IMAGE_REL_AMD64_SECTION => (RelocationKind::SectionIndex, 16, 0),
+ pe::IMAGE_REL_AMD64_SECREL => (RelocationKind::SectionOffset, 32, 0),
+ pe::IMAGE_REL_AMD64_SECREL7 => (RelocationKind::SectionOffset, 7, 0),
+ typ => (RelocationKind::Coff(typ), 0, 0),
+ },
+ _ => (RelocationKind::Coff(relocation.typ.get(LE)), 0, 0),
+ };
+ let target = RelocationTarget::Symbol(SymbolIndex(
+ relocation.symbol_table_index.get(LE) as usize,
+ ));
+ (
+ u64::from(relocation.virtual_address.get(LE)),
+ Relocation {
+ kind,
+ encoding: RelocationEncoding::Generic,
+ size,
+ target,
+ addend,
+ implicit_addend: true,
+ },
+ )
+ })
+ }
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> fmt::Debug
+ for CoffRelocationIterator<'data, 'file, R, Coff>
+{
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ f.debug_struct("CoffRelocationIterator").finish()
+ }
+}
diff --git a/vendor/object/src/read/coff/section.rs b/vendor/object/src/read/coff/section.rs
new file mode 100644
index 0000000..84a3fa9
--- /dev/null
+++ b/vendor/object/src/read/coff/section.rs
@@ -0,0 +1,585 @@
+use core::convert::TryFrom;
+use core::{iter, result, slice, str};
+
+use crate::endian::LittleEndian as LE;
+use crate::pe;
+use crate::read::util::StringTable;
+use crate::read::{
+ self, CompressedData, CompressedFileRange, Error, ObjectSection, ObjectSegment, ReadError,
+ ReadRef, Result, SectionFlags, SectionIndex, SectionKind, SegmentFlags,
+};
+
+use super::{CoffFile, CoffHeader, CoffRelocationIterator};
+
+/// The table of section headers in a COFF or PE file.
+///
+/// Returned by [`CoffHeader::sections`] and
+/// [`ImageNtHeaders::sections`](crate::read::pe::ImageNtHeaders::sections).
+#[derive(Debug, Default, Clone, Copy)]
+pub struct SectionTable<'data> {
+ sections: &'data [pe::ImageSectionHeader],
+}
+
+impl<'data> SectionTable<'data> {
+ /// Parse the section table.
+ ///
+ /// `data` must be the entire file data.
+ /// `offset` must be after the optional file header.
+ pub fn parse<Coff: CoffHeader, R: ReadRef<'data>>(
+ header: &Coff,
+ data: R,
+ offset: u64,
+ ) -> Result<Self> {
+ let sections = data
+ .read_slice_at(offset, header.number_of_sections() as usize)
+ .read_error("Invalid COFF/PE section headers")?;
+ Ok(SectionTable { sections })
+ }
+
+ /// Iterate over the section headers.
+ ///
+ /// Warning: sections indices start at 1.
+ #[inline]
+ pub fn iter(&self) -> slice::Iter<'data, pe::ImageSectionHeader> {
+ self.sections.iter()
+ }
+
+ /// Return true if the section table is empty.
+ #[inline]
+ pub fn is_empty(&self) -> bool {
+ self.sections.is_empty()
+ }
+
+ /// The number of section headers.
+ #[inline]
+ pub fn len(&self) -> usize {
+ self.sections.len()
+ }
+
+ /// Return the section header at the given index.
+ ///
+ /// The index is 1-based.
+ pub fn section(&self, index: usize) -> read::Result<&'data pe::ImageSectionHeader> {
+ self.sections
+ .get(index.wrapping_sub(1))
+ .read_error("Invalid COFF/PE section index")
+ }
+
+ /// Return the section header with the given name.
+ ///
+ /// The returned index is 1-based.
+ ///
+ /// Ignores sections with invalid names.
+ pub fn section_by_name<R: ReadRef<'data>>(
+ &self,
+ strings: StringTable<'data, R>,
+ name: &[u8],
+ ) -> Option<(usize, &'data pe::ImageSectionHeader)> {
+ self.sections
+ .iter()
+ .enumerate()
+ .find(|(_, section)| section.name(strings) == Ok(name))
+ .map(|(index, section)| (index + 1, section))
+ }
+
+ /// Compute the maximum file offset used by sections.
+ ///
+ /// This will usually match the end of file, unless the PE file has a
+ /// [data overlay](https://security.stackexchange.com/questions/77336/how-is-the-file-overlay-read-by-an-exe-virus)
+ pub fn max_section_file_offset(&self) -> u64 {
+ let mut max = 0;
+ for section in self.iter() {
+ match (section.pointer_to_raw_data.get(LE) as u64)
+ .checked_add(section.size_of_raw_data.get(LE) as u64)
+ {
+ None => {
+ // This cannot happen, we're suming two u32 into a u64
+ continue;
+ }
+ Some(end_of_section) => {
+ if end_of_section > max {
+ max = end_of_section;
+ }
+ }
+ }
+ }
+ max
+ }
+}
+
+/// An iterator for the loadable sections in a [`CoffBigFile`](super::CoffBigFile).
+pub type CoffBigSegmentIterator<'data, 'file, R = &'data [u8]> =
+ CoffSegmentIterator<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// An iterator for the loadable sections in a [`CoffFile`].
+#[derive(Debug)]
+pub struct CoffSegmentIterator<
+ 'data,
+ 'file,
+ R: ReadRef<'data> = &'data [u8],
+ Coff: CoffHeader = pe::ImageFileHeader,
+> {
+ pub(super) file: &'file CoffFile<'data, R, Coff>,
+ pub(super) iter: slice::Iter<'data, pe::ImageSectionHeader>,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> Iterator
+ for CoffSegmentIterator<'data, 'file, R, Coff>
+{
+ type Item = CoffSegment<'data, 'file, R, Coff>;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ self.iter.next().map(|section| CoffSegment {
+ file: self.file,
+ section,
+ })
+ }
+}
+
+/// A loadable section in a [`CoffBigFile`](super::CoffBigFile).
+///
+/// Most functionality is provided by the [`ObjectSegment`] trait implementation.
+pub type CoffBigSegment<'data, 'file, R = &'data [u8]> =
+ CoffSegment<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// A loadable section in a [`CoffFile`].
+///
+/// Most functionality is provided by the [`ObjectSegment`] trait implementation.
+#[derive(Debug)]
+pub struct CoffSegment<
+ 'data,
+ 'file,
+ R: ReadRef<'data> = &'data [u8],
+ Coff: CoffHeader = pe::ImageFileHeader,
+> {
+ pub(super) file: &'file CoffFile<'data, R, Coff>,
+ pub(super) section: &'data pe::ImageSectionHeader,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> CoffSegment<'data, 'file, R, Coff> {
+ fn bytes(&self) -> Result<&'data [u8]> {
+ self.section
+ .coff_data(self.file.data)
+ .read_error("Invalid COFF section offset or size")
+ }
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> read::private::Sealed
+ for CoffSegment<'data, 'file, R, Coff>
+{
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> ObjectSegment<'data>
+ for CoffSegment<'data, 'file, R, Coff>
+{
+ #[inline]
+ fn address(&self) -> u64 {
+ u64::from(self.section.virtual_address.get(LE))
+ }
+
+ #[inline]
+ fn size(&self) -> u64 {
+ u64::from(self.section.virtual_size.get(LE))
+ }
+
+ #[inline]
+ fn align(&self) -> u64 {
+ self.section.coff_alignment()
+ }
+
+ #[inline]
+ fn file_range(&self) -> (u64, u64) {
+ let (offset, size) = self.section.coff_file_range().unwrap_or((0, 0));
+ (u64::from(offset), u64::from(size))
+ }
+
+ fn data(&self) -> Result<&'data [u8]> {
+ self.bytes()
+ }
+
+ fn data_range(&self, address: u64, size: u64) -> Result<Option<&'data [u8]>> {
+ Ok(read::util::data_range(
+ self.bytes()?,
+ self.address(),
+ address,
+ size,
+ ))
+ }
+
+ #[inline]
+ fn name_bytes(&self) -> Result<Option<&[u8]>> {
+ self.section
+ .name(self.file.common.symbols.strings())
+ .map(Some)
+ }
+
+ #[inline]
+ fn name(&self) -> Result<Option<&str>> {
+ let name = self.section.name(self.file.common.symbols.strings())?;
+ str::from_utf8(name)
+ .ok()
+ .read_error("Non UTF-8 COFF section name")
+ .map(Some)
+ }
+
+ #[inline]
+ fn flags(&self) -> SegmentFlags {
+ let characteristics = self.section.characteristics.get(LE);
+ SegmentFlags::Coff { characteristics }
+ }
+}
+
+/// An iterator for the sections in a [`CoffBigFile`](super::CoffBigFile).
+pub type CoffBigSectionIterator<'data, 'file, R = &'data [u8]> =
+ CoffSectionIterator<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// An iterator for the sections in a [`CoffFile`].
+#[derive(Debug)]
+pub struct CoffSectionIterator<
+ 'data,
+ 'file,
+ R: ReadRef<'data> = &'data [u8],
+ Coff: CoffHeader = pe::ImageFileHeader,
+> {
+ pub(super) file: &'file CoffFile<'data, R, Coff>,
+ pub(super) iter: iter::Enumerate<slice::Iter<'data, pe::ImageSectionHeader>>,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> Iterator
+ for CoffSectionIterator<'data, 'file, R, Coff>
+{
+ type Item = CoffSection<'data, 'file, R, Coff>;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ self.iter.next().map(|(index, section)| CoffSection {
+ file: self.file,
+ index: SectionIndex(index + 1),
+ section,
+ })
+ }
+}
+
+/// A section in a [`CoffBigFile`](super::CoffBigFile).
+///
+/// Most functionality is provided by the [`ObjectSection`] trait implementation.
+pub type CoffBigSection<'data, 'file, R = &'data [u8]> =
+ CoffSection<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// A section in a [`CoffFile`].
+///
+/// Most functionality is provided by the [`ObjectSection`] trait implementation.
+#[derive(Debug)]
+pub struct CoffSection<
+ 'data,
+ 'file,
+ R: ReadRef<'data> = &'data [u8],
+ Coff: CoffHeader = pe::ImageFileHeader,
+> {
+ pub(super) file: &'file CoffFile<'data, R, Coff>,
+ pub(super) index: SectionIndex,
+ pub(super) section: &'data pe::ImageSectionHeader,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> CoffSection<'data, 'file, R, Coff> {
+ fn bytes(&self) -> Result<&'data [u8]> {
+ self.section
+ .coff_data(self.file.data)
+ .read_error("Invalid COFF section offset or size")
+ }
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> read::private::Sealed
+ for CoffSection<'data, 'file, R, Coff>
+{
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> ObjectSection<'data>
+ for CoffSection<'data, 'file, R, Coff>
+{
+ type RelocationIterator = CoffRelocationIterator<'data, 'file, R, Coff>;
+
+ #[inline]
+ fn index(&self) -> SectionIndex {
+ self.index
+ }
+
+ #[inline]
+ fn address(&self) -> u64 {
+ u64::from(self.section.virtual_address.get(LE))
+ }
+
+ #[inline]
+ fn size(&self) -> u64 {
+ // TODO: This may need to be the length from the auxiliary symbol for this section.
+ u64::from(self.section.size_of_raw_data.get(LE))
+ }
+
+ #[inline]
+ fn align(&self) -> u64 {
+ self.section.coff_alignment()
+ }
+
+ #[inline]
+ fn file_range(&self) -> Option<(u64, u64)> {
+ let (offset, size) = self.section.coff_file_range()?;
+ Some((u64::from(offset), u64::from(size)))
+ }
+
+ fn data(&self) -> Result<&'data [u8]> {
+ self.bytes()
+ }
+
+ fn data_range(&self, address: u64, size: u64) -> Result<Option<&'data [u8]>> {
+ Ok(read::util::data_range(
+ self.bytes()?,
+ self.address(),
+ address,
+ size,
+ ))
+ }
+
+ #[inline]
+ fn compressed_file_range(&self) -> Result<CompressedFileRange> {
+ Ok(CompressedFileRange::none(self.file_range()))
+ }
+
+ #[inline]
+ fn compressed_data(&self) -> Result<CompressedData<'data>> {
+ self.data().map(CompressedData::none)
+ }
+
+ #[inline]
+ fn name_bytes(&self) -> Result<&[u8]> {
+ self.section.name(self.file.common.symbols.strings())
+ }
+
+ #[inline]
+ fn name(&self) -> Result<&str> {
+ let name = self.name_bytes()?;
+ str::from_utf8(name)
+ .ok()
+ .read_error("Non UTF-8 COFF section name")
+ }
+
+ #[inline]
+ fn segment_name_bytes(&self) -> Result<Option<&[u8]>> {
+ Ok(None)
+ }
+
+ #[inline]
+ fn segment_name(&self) -> Result<Option<&str>> {
+ Ok(None)
+ }
+
+ #[inline]
+ fn kind(&self) -> SectionKind {
+ self.section.kind()
+ }
+
+ fn relocations(&self) -> CoffRelocationIterator<'data, 'file, R, Coff> {
+ let relocations = self.section.coff_relocations(self.file.data).unwrap_or(&[]);
+ CoffRelocationIterator {
+ file: self.file,
+ iter: relocations.iter(),
+ }
+ }
+
+ fn flags(&self) -> SectionFlags {
+ SectionFlags::Coff {
+ characteristics: self.section.characteristics.get(LE),
+ }
+ }
+}
+
+impl pe::ImageSectionHeader {
+ pub(crate) fn kind(&self) -> SectionKind {
+ let characteristics = self.characteristics.get(LE);
+ if characteristics & (pe::IMAGE_SCN_CNT_CODE | pe::IMAGE_SCN_MEM_EXECUTE) != 0 {
+ SectionKind::Text
+ } else if characteristics & pe::IMAGE_SCN_CNT_INITIALIZED_DATA != 0 {
+ if characteristics & pe::IMAGE_SCN_MEM_DISCARDABLE != 0 {
+ SectionKind::Other
+ } else if characteristics & pe::IMAGE_SCN_MEM_WRITE != 0 {
+ SectionKind::Data
+ } else {
+ SectionKind::ReadOnlyData
+ }
+ } else if characteristics & pe::IMAGE_SCN_CNT_UNINITIALIZED_DATA != 0 {
+ SectionKind::UninitializedData
+ } else if characteristics & pe::IMAGE_SCN_LNK_INFO != 0 {
+ SectionKind::Linker
+ } else {
+ SectionKind::Unknown
+ }
+ }
+}
+
+impl pe::ImageSectionHeader {
+ /// Return the string table offset of the section name.
+ ///
+ /// Returns `Ok(None)` if the name doesn't use the string table
+ /// and can be obtained with `raw_name` instead.
+ pub fn name_offset(&self) -> Result<Option<u32>> {
+ let bytes = &self.name;
+ if bytes[0] != b'/' {
+ return Ok(None);
+ }
+
+ if bytes[1] == b'/' {
+ let mut offset = 0;
+ for byte in bytes[2..].iter() {
+ let digit = match byte {
+ b'A'..=b'Z' => byte - b'A',
+ b'a'..=b'z' => byte - b'a' + 26,
+ b'0'..=b'9' => byte - b'0' + 52,
+ b'+' => 62,
+ b'/' => 63,
+ _ => return Err(Error("Invalid COFF section name base-64 offset")),
+ };
+ offset = offset * 64 + digit as u64;
+ }
+ u32::try_from(offset)
+ .ok()
+ .read_error("Invalid COFF section name base-64 offset")
+ .map(Some)
+ } else {
+ let mut offset = 0;
+ for byte in bytes[1..].iter() {
+ let digit = match byte {
+ b'0'..=b'9' => byte - b'0',
+ 0 => break,
+ _ => return Err(Error("Invalid COFF section name base-10 offset")),
+ };
+ offset = offset * 10 + digit as u32;
+ }
+ Ok(Some(offset))
+ }
+ }
+
+ /// Return the section name.
+ ///
+ /// This handles decoding names that are offsets into the symbol string table.
+ pub fn name<'data, R: ReadRef<'data>>(
+ &'data self,
+ strings: StringTable<'data, R>,
+ ) -> Result<&'data [u8]> {
+ if let Some(offset) = self.name_offset()? {
+ strings
+ .get(offset)
+ .read_error("Invalid COFF section name offset")
+ } else {
+ Ok(self.raw_name())
+ }
+ }
+
+ /// Return the raw section name.
+ pub fn raw_name(&self) -> &[u8] {
+ let bytes = &self.name;
+ match memchr::memchr(b'\0', bytes) {
+ Some(end) => &bytes[..end],
+ None => &bytes[..],
+ }
+ }
+
+ /// Return the offset and size of the section in a COFF file.
+ ///
+ /// Returns `None` for sections that have no data in the file.
+ pub fn coff_file_range(&self) -> Option<(u32, u32)> {
+ if self.characteristics.get(LE) & pe::IMAGE_SCN_CNT_UNINITIALIZED_DATA != 0 {
+ None
+ } else {
+ let offset = self.pointer_to_raw_data.get(LE);
+ // Note: virtual size is not used for COFF.
+ let size = self.size_of_raw_data.get(LE);
+ Some((offset, size))
+ }
+ }
+
+ /// Return the section data in a COFF file.
+ ///
+ /// Returns `Ok(&[])` if the section has no data.
+ /// Returns `Err` for invalid values.
+ pub fn coff_data<'data, R: ReadRef<'data>>(&self, data: R) -> result::Result<&'data [u8], ()> {
+ if let Some((offset, size)) = self.coff_file_range() {
+ data.read_bytes_at(offset.into(), size.into())
+ } else {
+ Ok(&[])
+ }
+ }
+
+ /// Return the section alignment in bytes.
+ ///
+ /// This is only valid for sections in a COFF file.
+ pub fn coff_alignment(&self) -> u64 {
+ match self.characteristics.get(LE) & pe::IMAGE_SCN_ALIGN_MASK {
+ pe::IMAGE_SCN_ALIGN_1BYTES => 1,
+ pe::IMAGE_SCN_ALIGN_2BYTES => 2,
+ pe::IMAGE_SCN_ALIGN_4BYTES => 4,
+ pe::IMAGE_SCN_ALIGN_8BYTES => 8,
+ pe::IMAGE_SCN_ALIGN_16BYTES => 16,
+ pe::IMAGE_SCN_ALIGN_32BYTES => 32,
+ pe::IMAGE_SCN_ALIGN_64BYTES => 64,
+ pe::IMAGE_SCN_ALIGN_128BYTES => 128,
+ pe::IMAGE_SCN_ALIGN_256BYTES => 256,
+ pe::IMAGE_SCN_ALIGN_512BYTES => 512,
+ pe::IMAGE_SCN_ALIGN_1024BYTES => 1024,
+ pe::IMAGE_SCN_ALIGN_2048BYTES => 2048,
+ pe::IMAGE_SCN_ALIGN_4096BYTES => 4096,
+ pe::IMAGE_SCN_ALIGN_8192BYTES => 8192,
+ _ => 16,
+ }
+ }
+
+ /// Read the relocations in a COFF file.
+ ///
+ /// `data` must be the entire file data.
+ pub fn coff_relocations<'data, R: ReadRef<'data>>(
+ &self,
+ data: R,
+ ) -> read::Result<&'data [pe::ImageRelocation]> {
+ let mut pointer = self.pointer_to_relocations.get(LE).into();
+ let mut number: usize = self.number_of_relocations.get(LE).into();
+ if number == core::u16::MAX.into()
+ && self.characteristics.get(LE) & pe::IMAGE_SCN_LNK_NRELOC_OVFL != 0
+ {
+ // Extended relocations. Read first relocation (which contains extended count) & adjust
+ // relocations pointer.
+ let extended_relocation_info = data
+ .read_at::<pe::ImageRelocation>(pointer)
+ .read_error("Invalid COFF relocation offset or number")?;
+ number = extended_relocation_info.virtual_address.get(LE) as usize;
+ if number == 0 {
+ return Err(Error("Invalid COFF relocation number"));
+ }
+ pointer += core::mem::size_of::<pe::ImageRelocation>() as u64;
+ // Extended relocation info does not contribute to the count of sections.
+ number -= 1;
+ }
+ data.read_slice_at(pointer, number)
+ .read_error("Invalid COFF relocation offset or number")
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn name_offset() {
+ let mut section = pe::ImageSectionHeader::default();
+ section.name = *b"xxxxxxxx";
+ assert_eq!(section.name_offset(), Ok(None));
+ section.name = *b"/0\0\0\0\0\0\0";
+ assert_eq!(section.name_offset(), Ok(Some(0)));
+ section.name = *b"/9999999";
+ assert_eq!(section.name_offset(), Ok(Some(999_9999)));
+ section.name = *b"//AAAAAA";
+ assert_eq!(section.name_offset(), Ok(Some(0)));
+ section.name = *b"//D/////";
+ assert_eq!(section.name_offset(), Ok(Some(0xffff_ffff)));
+ section.name = *b"//EAAAAA";
+ assert!(section.name_offset().is_err());
+ section.name = *b"////////";
+ assert!(section.name_offset().is_err());
+ }
+}
diff --git a/vendor/object/src/read/coff/symbol.rs b/vendor/object/src/read/coff/symbol.rs
new file mode 100644
index 0000000..4f8a0c6
--- /dev/null
+++ b/vendor/object/src/read/coff/symbol.rs
@@ -0,0 +1,635 @@
+use alloc::fmt;
+use alloc::vec::Vec;
+use core::convert::TryInto;
+use core::fmt::Debug;
+use core::str;
+
+use super::{CoffCommon, CoffHeader, SectionTable};
+use crate::endian::{LittleEndian as LE, U32Bytes};
+use crate::pe;
+use crate::pod::{bytes_of, bytes_of_slice, Pod};
+use crate::read::util::StringTable;
+use crate::read::{
+ self, Bytes, ObjectSymbol, ObjectSymbolTable, ReadError, ReadRef, Result, SectionIndex,
+ SymbolFlags, SymbolIndex, SymbolKind, SymbolMap, SymbolMapEntry, SymbolScope, SymbolSection,
+};
+
+/// A table of symbol entries in a COFF or PE file.
+///
+/// Also includes the string table used for the symbol names.
+///
+/// Returned by [`CoffHeader::symbols`] and
+/// [`ImageNtHeaders::symbols`](crate::read::pe::ImageNtHeaders::symbols).
+#[derive(Debug)]
+pub struct SymbolTable<'data, R = &'data [u8], Coff = pe::ImageFileHeader>
+where
+ R: ReadRef<'data>,
+ Coff: CoffHeader,
+{
+ symbols: &'data [Coff::ImageSymbolBytes],
+ strings: StringTable<'data, R>,
+}
+
+impl<'data, R: ReadRef<'data>, Coff: CoffHeader> Default for SymbolTable<'data, R, Coff> {
+ fn default() -> Self {
+ Self {
+ symbols: &[],
+ strings: StringTable::default(),
+ }
+ }
+}
+
+impl<'data, R: ReadRef<'data>, Coff: CoffHeader> SymbolTable<'data, R, Coff> {
+ /// Read the symbol table.
+ pub fn parse(header: &Coff, data: R) -> Result<Self> {
+ // The symbol table may not be present.
+ let mut offset = header.pointer_to_symbol_table().into();
+ let (symbols, strings) = if offset != 0 {
+ let symbols = data
+ .read_slice(&mut offset, header.number_of_symbols() as usize)
+ .read_error("Invalid COFF symbol table offset or size")?;
+
+ // Note: don't update data when reading length; the length includes itself.
+ let length = data
+ .read_at::<U32Bytes<_>>(offset)
+ .read_error("Missing COFF string table")?
+ .get(LE);
+ let str_end = offset
+ .checked_add(length as u64)
+ .read_error("Invalid COFF string table length")?;
+ let strings = StringTable::new(data, offset, str_end);
+
+ (symbols, strings)
+ } else {
+ (&[][..], StringTable::default())
+ };
+
+ Ok(SymbolTable { symbols, strings })
+ }
+
+ /// Return the string table used for the symbol names.
+ #[inline]
+ pub fn strings(&self) -> StringTable<'data, R> {
+ self.strings
+ }
+
+ /// Return true if the symbol table is empty.
+ #[inline]
+ pub fn is_empty(&self) -> bool {
+ self.symbols.is_empty()
+ }
+
+ /// The number of symbol table entries.
+ ///
+ /// This includes auxiliary symbol table entries.
+ #[inline]
+ pub fn len(&self) -> usize {
+ self.symbols.len()
+ }
+
+ /// Iterate over the symbols.
+ #[inline]
+ pub fn iter<'table>(&'table self) -> SymbolIterator<'data, 'table, R, Coff> {
+ SymbolIterator {
+ symbols: self,
+ index: 0,
+ }
+ }
+
+ /// Return the symbol table entry at the given index.
+ #[inline]
+ pub fn symbol(&self, index: usize) -> Result<&'data Coff::ImageSymbol> {
+ self.get::<Coff::ImageSymbol>(index, 0)
+ }
+
+ /// Return the auxiliary function symbol for the symbol table entry at the given index.
+ ///
+ /// Note that the index is of the symbol, not the first auxiliary record.
+ #[inline]
+ pub fn aux_function(&self, index: usize) -> Result<&'data pe::ImageAuxSymbolFunction> {
+ self.get::<pe::ImageAuxSymbolFunction>(index, 1)
+ }
+
+ /// Return the auxiliary section symbol for the symbol table entry at the given index.
+ ///
+ /// Note that the index is of the symbol, not the first auxiliary record.
+ #[inline]
+ pub fn aux_section(&self, index: usize) -> Result<&'data pe::ImageAuxSymbolSection> {
+ self.get::<pe::ImageAuxSymbolSection>(index, 1)
+ }
+
+ /// Return the auxiliary file name for the symbol table entry at the given index.
+ ///
+ /// Note that the index is of the symbol, not the first auxiliary record.
+ pub fn aux_file_name(&self, index: usize, aux_count: u8) -> Result<&'data [u8]> {
+ let entries = index
+ .checked_add(1)
+ .and_then(|x| Some(x..x.checked_add(aux_count.into())?))
+ .and_then(|x| self.symbols.get(x))
+ .read_error("Invalid COFF symbol index")?;
+ let bytes = bytes_of_slice(entries);
+ // The name is padded with nulls.
+ Ok(match memchr::memchr(b'\0', bytes) {
+ Some(end) => &bytes[..end],
+ None => bytes,
+ })
+ }
+
+ /// Return the symbol table entry or auxiliary record at the given index and offset.
+ pub fn get<T: Pod>(&self, index: usize, offset: usize) -> Result<&'data T> {
+ let bytes = index
+ .checked_add(offset)
+ .and_then(|x| self.symbols.get(x))
+ .read_error("Invalid COFF symbol index")?;
+ Bytes(bytes_of(bytes))
+ .read()
+ .read_error("Invalid COFF symbol data")
+ }
+
+ /// Construct a map from addresses to a user-defined map entry.
+ pub fn map<Entry: SymbolMapEntry, F: Fn(&'data Coff::ImageSymbol) -> Option<Entry>>(
+ &self,
+ f: F,
+ ) -> SymbolMap<Entry> {
+ let mut symbols = Vec::with_capacity(self.symbols.len());
+ for (_, symbol) in self.iter() {
+ if !symbol.is_definition() {
+ continue;
+ }
+ if let Some(entry) = f(symbol) {
+ symbols.push(entry);
+ }
+ }
+ SymbolMap::new(symbols)
+ }
+}
+
+/// An iterator for symbol entries in a COFF or PE file.
+///
+/// Yields the index and symbol structure for each symbol.
+#[derive(Debug)]
+pub struct SymbolIterator<'data, 'table, R = &'data [u8], Coff = pe::ImageFileHeader>
+where
+ R: ReadRef<'data>,
+ Coff: CoffHeader,
+{
+ symbols: &'table SymbolTable<'data, R, Coff>,
+ index: usize,
+}
+
+impl<'data, 'table, R: ReadRef<'data>, Coff: CoffHeader> Iterator
+ for SymbolIterator<'data, 'table, R, Coff>
+{
+ type Item = (usize, &'data Coff::ImageSymbol);
+
+ fn next(&mut self) -> Option<Self::Item> {
+ let index = self.index;
+ let symbol = self.symbols.symbol(index).ok()?;
+ self.index += 1 + symbol.number_of_aux_symbols() as usize;
+ Some((index, symbol))
+ }
+}
+
+/// A symbol table in a [`CoffBigFile`](super::CoffBigFile).
+pub type CoffBigSymbolTable<'data, 'file, R = &'data [u8]> =
+ CoffSymbolTable<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// A symbol table in a [`CoffFile`](super::CoffFile)
+/// or [`PeFile`](crate::read::pe::PeFile).
+#[derive(Debug, Clone, Copy)]
+pub struct CoffSymbolTable<'data, 'file, R = &'data [u8], Coff = pe::ImageFileHeader>
+where
+ R: ReadRef<'data>,
+ Coff: CoffHeader,
+{
+ pub(crate) file: &'file CoffCommon<'data, R, Coff>,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> read::private::Sealed
+ for CoffSymbolTable<'data, 'file, R, Coff>
+{
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> ObjectSymbolTable<'data>
+ for CoffSymbolTable<'data, 'file, R, Coff>
+{
+ type Symbol = CoffSymbol<'data, 'file, R, Coff>;
+ type SymbolIterator = CoffSymbolIterator<'data, 'file, R, Coff>;
+
+ fn symbols(&self) -> Self::SymbolIterator {
+ CoffSymbolIterator {
+ file: self.file,
+ index: 0,
+ }
+ }
+
+ fn symbol_by_index(&self, index: SymbolIndex) -> Result<Self::Symbol> {
+ let symbol = self.file.symbols.symbol(index.0)?;
+ Ok(CoffSymbol {
+ file: self.file,
+ index,
+ symbol,
+ })
+ }
+}
+
+/// An iterator for the symbols in a [`CoffBigFile`](super::CoffBigFile).
+pub type CoffBigSymbolIterator<'data, 'file, R = &'data [u8]> =
+ CoffSymbolIterator<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// An iterator for the symbols in a [`CoffFile`](super::CoffFile)
+/// or [`PeFile`](crate::read::pe::PeFile).
+pub struct CoffSymbolIterator<'data, 'file, R = &'data [u8], Coff = pe::ImageFileHeader>
+where
+ R: ReadRef<'data>,
+ Coff: CoffHeader,
+{
+ pub(crate) file: &'file CoffCommon<'data, R, Coff>,
+ pub(crate) index: usize,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> fmt::Debug
+ for CoffSymbolIterator<'data, 'file, R, Coff>
+{
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ f.debug_struct("CoffSymbolIterator").finish()
+ }
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> Iterator
+ for CoffSymbolIterator<'data, 'file, R, Coff>
+{
+ type Item = CoffSymbol<'data, 'file, R, Coff>;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ let index = self.index;
+ let symbol = self.file.symbols.symbol(index).ok()?;
+ self.index += 1 + symbol.number_of_aux_symbols() as usize;
+ Some(CoffSymbol {
+ file: self.file,
+ index: SymbolIndex(index),
+ symbol,
+ })
+ }
+}
+
+/// A symbol in a [`CoffBigFile`](super::CoffBigFile).
+///
+/// Most functionality is provided by the [`ObjectSymbol`] trait implementation.
+pub type CoffBigSymbol<'data, 'file, R = &'data [u8]> =
+ CoffSymbol<'data, 'file, R, pe::AnonObjectHeaderBigobj>;
+
+/// A symbol in a [`CoffFile`](super::CoffFile) or [`PeFile`](crate::read::pe::PeFile).
+///
+/// Most functionality is provided by the [`ObjectSymbol`] trait implementation.
+#[derive(Debug, Clone, Copy)]
+pub struct CoffSymbol<'data, 'file, R = &'data [u8], Coff = pe::ImageFileHeader>
+where
+ R: ReadRef<'data>,
+ Coff: CoffHeader,
+{
+ pub(crate) file: &'file CoffCommon<'data, R, Coff>,
+ pub(crate) index: SymbolIndex,
+ pub(crate) symbol: &'data Coff::ImageSymbol,
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> CoffSymbol<'data, 'file, R, Coff> {
+ #[inline]
+ /// Get the raw `ImageSymbol` struct.
+ pub fn raw_symbol(&self) -> &'data Coff::ImageSymbol {
+ self.symbol
+ }
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> read::private::Sealed
+ for CoffSymbol<'data, 'file, R, Coff>
+{
+}
+
+impl<'data, 'file, R: ReadRef<'data>, Coff: CoffHeader> ObjectSymbol<'data>
+ for CoffSymbol<'data, 'file, R, Coff>
+{
+ #[inline]
+ fn index(&self) -> SymbolIndex {
+ self.index
+ }
+
+ fn name_bytes(&self) -> read::Result<&'data [u8]> {
+ if self.symbol.has_aux_file_name() {
+ self.file
+ .symbols
+ .aux_file_name(self.index.0, self.symbol.number_of_aux_symbols())
+ } else {
+ self.symbol.name(self.file.symbols.strings())
+ }
+ }
+
+ fn name(&self) -> read::Result<&'data str> {
+ let name = self.name_bytes()?;
+ str::from_utf8(name)
+ .ok()
+ .read_error("Non UTF-8 COFF symbol name")
+ }
+
+ fn address(&self) -> u64 {
+ // Only return an address for storage classes that we know use an address.
+ match self.symbol.storage_class() {
+ pe::IMAGE_SYM_CLASS_STATIC
+ | pe::IMAGE_SYM_CLASS_WEAK_EXTERNAL
+ | pe::IMAGE_SYM_CLASS_LABEL => {}
+ pe::IMAGE_SYM_CLASS_EXTERNAL => {
+ if self.symbol.section_number() == pe::IMAGE_SYM_UNDEFINED {
+ // Undefined or common data, neither of which have an address.
+ return 0;
+ }
+ }
+ _ => return 0,
+ }
+ self.symbol
+ .address(self.file.image_base, &self.file.sections)
+ .unwrap_or(0)
+ }
+
+ fn size(&self) -> u64 {
+ match self.symbol.storage_class() {
+ pe::IMAGE_SYM_CLASS_STATIC => {
+ // Section symbols may duplicate the size from the section table.
+ if self.symbol.has_aux_section() {
+ if let Ok(aux) = self.file.symbols.aux_section(self.index.0) {
+ u64::from(aux.length.get(LE))
+ } else {
+ 0
+ }
+ } else {
+ 0
+ }
+ }
+ pe::IMAGE_SYM_CLASS_EXTERNAL => {
+ if self.symbol.section_number() == pe::IMAGE_SYM_UNDEFINED {
+ // For undefined symbols, symbol.value is 0 and the size is 0.
+ // For common data, symbol.value is the size.
+ u64::from(self.symbol.value())
+ } else if self.symbol.has_aux_function() {
+ // Function symbols may have a size.
+ if let Ok(aux) = self.file.symbols.aux_function(self.index.0) {
+ u64::from(aux.total_size.get(LE))
+ } else {
+ 0
+ }
+ } else {
+ 0
+ }
+ }
+ // Most symbols don't have sizes.
+ _ => 0,
+ }
+ }
+
+ fn kind(&self) -> SymbolKind {
+ let derived_kind = if self.symbol.derived_type() == pe::IMAGE_SYM_DTYPE_FUNCTION {
+ SymbolKind::Text
+ } else {
+ SymbolKind::Data
+ };
+ match self.symbol.storage_class() {
+ pe::IMAGE_SYM_CLASS_STATIC => {
+ if self.symbol.has_aux_section() {
+ SymbolKind::Section
+ } else {
+ derived_kind
+ }
+ }
+ pe::IMAGE_SYM_CLASS_EXTERNAL | pe::IMAGE_SYM_CLASS_WEAK_EXTERNAL => derived_kind,
+ pe::IMAGE_SYM_CLASS_SECTION => SymbolKind::Section,
+ pe::IMAGE_SYM_CLASS_FILE => SymbolKind::File,
+ pe::IMAGE_SYM_CLASS_LABEL => SymbolKind::Label,
+ _ => SymbolKind::Unknown,
+ }
+ }
+
+ fn section(&self) -> SymbolSection {
+ match self.symbol.section_number() {
+ pe::IMAGE_SYM_UNDEFINED => {
+ if self.symbol.storage_class() == pe::IMAGE_SYM_CLASS_EXTERNAL {
+ if self.symbol.value() == 0 {
+ SymbolSection::Undefined
+ } else {
+ SymbolSection::Common
+ }
+ } else if self.symbol.storage_class() == pe::IMAGE_SYM_CLASS_SECTION {
+ SymbolSection::Undefined
+ } else {
+ SymbolSection::Unknown
+ }
+ }
+ pe::IMAGE_SYM_ABSOLUTE => SymbolSection::Absolute,
+ pe::IMAGE_SYM_DEBUG => {
+ if self.symbol.storage_class() == pe::IMAGE_SYM_CLASS_FILE {
+ SymbolSection::None
+ } else {
+ SymbolSection::Unknown
+ }
+ }
+ index if index > 0 => SymbolSection::Section(SectionIndex(index as usize)),
+ _ => SymbolSection::Unknown,
+ }
+ }
+
+ #[inline]
+ fn is_undefined(&self) -> bool {
+ self.symbol.storage_class() == pe::IMAGE_SYM_CLASS_EXTERNAL
+ && self.symbol.section_number() == pe::IMAGE_SYM_UNDEFINED
+ && self.symbol.value() == 0
+ }
+
+ #[inline]
+ fn is_definition(&self) -> bool {
+ self.symbol.is_definition()
+ }
+
+ #[inline]
+ fn is_common(&self) -> bool {
+ self.symbol.storage_class() == pe::IMAGE_SYM_CLASS_EXTERNAL
+ && self.symbol.section_number() == pe::IMAGE_SYM_UNDEFINED
+ && self.symbol.value() != 0
+ }
+
+ #[inline]
+ fn is_weak(&self) -> bool {
+ self.symbol.storage_class() == pe::IMAGE_SYM_CLASS_WEAK_EXTERNAL
+ }
+
+ #[inline]
+ fn scope(&self) -> SymbolScope {
+ match self.symbol.storage_class() {
+ pe::IMAGE_SYM_CLASS_EXTERNAL | pe::IMAGE_SYM_CLASS_WEAK_EXTERNAL => {
+ // TODO: determine if symbol is exported
+ SymbolScope::Linkage
+ }
+ _ => SymbolScope::Compilation,
+ }
+ }
+
+ #[inline]
+ fn is_global(&self) -> bool {
+ match self.symbol.storage_class() {
+ pe::IMAGE_SYM_CLASS_EXTERNAL | pe::IMAGE_SYM_CLASS_WEAK_EXTERNAL => true,
+ _ => false,
+ }
+ }
+
+ #[inline]
+ fn is_local(&self) -> bool {
+ !self.is_global()
+ }
+
+ fn flags(&self) -> SymbolFlags<SectionIndex, SymbolIndex> {
+ if self.symbol.has_aux_section() {
+ if let Ok(aux) = self.file.symbols.aux_section(self.index.0) {
+ let number = if Coff::is_type_bigobj() {
+ u32::from(aux.number.get(LE)) | (u32::from(aux.high_number.get(LE)) << 16)
+ } else {
+ u32::from(aux.number.get(LE))
+ };
+ return SymbolFlags::CoffSection {
+ selection: aux.selection,
+ associative_section: if number == 0 {
+ None
+ } else {
+ Some(SectionIndex(number as usize))
+ },
+ };
+ }
+ }
+ SymbolFlags::None
+ }
+}
+
+/// A trait for generic access to [`pe::ImageSymbol`] and [`pe::ImageSymbolEx`].
+#[allow(missing_docs)]
+pub trait ImageSymbol: Debug + Pod {
+ fn raw_name(&self) -> &[u8; 8];
+ fn value(&self) -> u32;
+ fn section_number(&self) -> i32;
+ fn typ(&self) -> u16;
+ fn storage_class(&self) -> u8;
+ fn number_of_aux_symbols(&self) -> u8;
+
+ /// Parse a COFF symbol name.
+ ///
+ /// `strings` must be the string table used for symbol names.
+ fn name<'data, R: ReadRef<'data>>(
+ &'data self,
+ strings: StringTable<'data, R>,
+ ) -> Result<&'data [u8]> {
+ let name = self.raw_name();
+ if name[0] == 0 {
+ // If the name starts with 0 then the last 4 bytes are a string table offset.
+ let offset = u32::from_le_bytes(name[4..8].try_into().unwrap());
+ strings
+ .get(offset)
+ .read_error("Invalid COFF symbol name offset")
+ } else {
+ // The name is inline and padded with nulls.
+ Ok(match memchr::memchr(b'\0', name) {
+ Some(end) => &name[..end],
+ None => &name[..],
+ })
+ }
+ }
+
+ /// Return the symbol address.
+ ///
+ /// This takes into account the image base and the section address.
+ fn address(&self, image_base: u64, sections: &SectionTable<'_>) -> Result<u64> {
+ let section_number = self.section_number() as usize;
+ let section = sections.section(section_number)?;
+ let virtual_address = u64::from(section.virtual_address.get(LE));
+ let value = u64::from(self.value());
+ Ok(image_base + virtual_address + value)
+ }
+
+ /// Return true if the symbol is a definition of a function or data object.
+ fn is_definition(&self) -> bool {
+ if self.section_number() <= 0 {
+ return false;
+ }
+ match self.storage_class() {
+ pe::IMAGE_SYM_CLASS_STATIC => !self.has_aux_section(),
+ pe::IMAGE_SYM_CLASS_EXTERNAL | pe::IMAGE_SYM_CLASS_WEAK_EXTERNAL => true,
+ _ => false,
+ }
+ }
+
+ /// Return true if the symbol has an auxiliary file name.
+ fn has_aux_file_name(&self) -> bool {
+ self.number_of_aux_symbols() > 0 && self.storage_class() == pe::IMAGE_SYM_CLASS_FILE
+ }
+
+ /// Return true if the symbol has an auxiliary function symbol.
+ fn has_aux_function(&self) -> bool {
+ self.number_of_aux_symbols() > 0 && self.derived_type() == pe::IMAGE_SYM_DTYPE_FUNCTION
+ }
+
+ /// Return true if the symbol has an auxiliary section symbol.
+ fn has_aux_section(&self) -> bool {
+ self.number_of_aux_symbols() > 0
+ && self.storage_class() == pe::IMAGE_SYM_CLASS_STATIC
+ && self.typ() == 0
+ }
+
+ fn base_type(&self) -> u16 {
+ self.typ() & pe::N_BTMASK
+ }
+
+ fn derived_type(&self) -> u16 {
+ (self.typ() & pe::N_TMASK) >> pe::N_BTSHFT
+ }
+}
+
+impl ImageSymbol for pe::ImageSymbol {
+ fn raw_name(&self) -> &[u8; 8] {
+ &self.name
+ }
+ fn value(&self) -> u32 {
+ self.value.get(LE)
+ }
+ fn section_number(&self) -> i32 {
+ let section_number = self.section_number.get(LE);
+ if section_number >= pe::IMAGE_SYM_SECTION_MAX {
+ (section_number as i16) as i32
+ } else {
+ section_number as i32
+ }
+ }
+ fn typ(&self) -> u16 {
+ self.typ.get(LE)
+ }
+ fn storage_class(&self) -> u8 {
+ self.storage_class
+ }
+ fn number_of_aux_symbols(&self) -> u8 {
+ self.number_of_aux_symbols
+ }
+}
+
+impl ImageSymbol for pe::ImageSymbolEx {
+ fn raw_name(&self) -> &[u8; 8] {
+ &self.name
+ }
+ fn value(&self) -> u32 {
+ self.value.get(LE)
+ }
+ fn section_number(&self) -> i32 {
+ self.section_number.get(LE)
+ }
+ fn typ(&self) -> u16 {
+ self.typ.get(LE)
+ }
+ fn storage_class(&self) -> u8 {
+ self.storage_class
+ }
+ fn number_of_aux_symbols(&self) -> u8 {
+ self.number_of_aux_symbols
+ }
+}