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-rw-r--r--vendor/object/src/read/macho/dyld_cache.rs344
-rw-r--r--vendor/object/src/read/macho/fat.rs122
-rw-r--r--vendor/object/src/read/macho/file.rs781
-rw-r--r--vendor/object/src/read/macho/load_command.rs382
-rw-r--r--vendor/object/src/read/macho/mod.rs72
-rw-r--r--vendor/object/src/read/macho/relocation.rs158
-rw-r--r--vendor/object/src/read/macho/section.rs389
-rw-r--r--vendor/object/src/read/macho/segment.rs303
-rw-r--r--vendor/object/src/read/macho/symbol.rs492
9 files changed, 3043 insertions, 0 deletions
diff --git a/vendor/object/src/read/macho/dyld_cache.rs b/vendor/object/src/read/macho/dyld_cache.rs
new file mode 100644
index 0000000..0f5dfc5
--- /dev/null
+++ b/vendor/object/src/read/macho/dyld_cache.rs
@@ -0,0 +1,344 @@
+use alloc::vec::Vec;
+use core::slice;
+
+use crate::read::{Error, File, ReadError, ReadRef, Result};
+use crate::{macho, Architecture, Endian, Endianness};
+
+/// A parsed representation of the dyld shared cache.
+#[derive(Debug)]
+pub struct DyldCache<'data, E = Endianness, R = &'data [u8]>
+where
+ E: Endian,
+ R: ReadRef<'data>,
+{
+ endian: E,
+ data: R,
+ subcaches: Vec<DyldSubCache<'data, E, R>>,
+ mappings: &'data [macho::DyldCacheMappingInfo<E>],
+ images: &'data [macho::DyldCacheImageInfo<E>],
+ arch: Architecture,
+}
+
+/// Information about a subcache.
+#[derive(Debug)]
+pub struct DyldSubCache<'data, E = Endianness, R = &'data [u8]>
+where
+ E: Endian,
+ R: ReadRef<'data>,
+{
+ data: R,
+ mappings: &'data [macho::DyldCacheMappingInfo<E>],
+}
+
+// This is the offset of the images_across_all_subcaches_count field.
+const MIN_HEADER_SIZE_SUBCACHES: u32 = 0x1c4;
+
+impl<'data, E, R> DyldCache<'data, E, R>
+where
+ E: Endian,
+ R: ReadRef<'data>,
+{
+ /// Parse the raw dyld shared cache data.
+ ///
+ /// For shared caches from macOS 12 / iOS 15 and above, the subcache files need to be
+ /// supplied as well, in the correct order, with the `.symbols` subcache last (if present).
+ /// For example, `data` would be the data for `dyld_shared_cache_x86_64`,
+ /// and `subcache_data` would be the data for `[dyld_shared_cache_x86_64.1, dyld_shared_cache_x86_64.2, ...]`.
+ pub fn parse(data: R, subcache_data: &[R]) -> Result<Self> {
+ let header = macho::DyldCacheHeader::parse(data)?;
+ let (arch, endian) = header.parse_magic()?;
+ let mappings = header.mappings(endian, data)?;
+
+ let symbols_subcache_uuid = header.symbols_subcache_uuid(endian);
+ let subcaches_info = header.subcaches(endian, data)?.unwrap_or(&[]);
+
+ if subcache_data.len() != subcaches_info.len() + symbols_subcache_uuid.is_some() as usize {
+ return Err(Error("Incorrect number of SubCaches"));
+ }
+
+ // Split out the .symbols subcache data from the other subcaches.
+ let (symbols_subcache_data_and_uuid, subcache_data) =
+ if let Some(symbols_uuid) = symbols_subcache_uuid {
+ let (sym_data, rest_data) = subcache_data.split_last().unwrap();
+ (Some((*sym_data, symbols_uuid)), rest_data)
+ } else {
+ (None, subcache_data)
+ };
+
+ // Read the regular SubCaches (.1, .2, ...), if present.
+ let mut subcaches = Vec::new();
+ for (&data, info) in subcache_data.iter().zip(subcaches_info.iter()) {
+ let sc_header = macho::DyldCacheHeader::<E>::parse(data)?;
+ if sc_header.uuid != info.uuid {
+ return Err(Error("Unexpected SubCache UUID"));
+ }
+ let mappings = sc_header.mappings(endian, data)?;
+ subcaches.push(DyldSubCache { data, mappings });
+ }
+
+ // Read the .symbols SubCache, if present.
+ // Other than the UUID verification, the symbols SubCache is currently unused.
+ let _symbols_subcache = match symbols_subcache_data_and_uuid {
+ Some((data, uuid)) => {
+ let sc_header = macho::DyldCacheHeader::<E>::parse(data)?;
+ if sc_header.uuid != uuid {
+ return Err(Error("Unexpected .symbols SubCache UUID"));
+ }
+ let mappings = sc_header.mappings(endian, data)?;
+ Some(DyldSubCache { data, mappings })
+ }
+ None => None,
+ };
+
+ let images = header.images(endian, data)?;
+ Ok(DyldCache {
+ endian,
+ data,
+ subcaches,
+ mappings,
+ images,
+ arch,
+ })
+ }
+
+ /// Get the architecture type of the file.
+ pub fn architecture(&self) -> Architecture {
+ self.arch
+ }
+
+ /// Get the endianness of the file.
+ #[inline]
+ pub fn endianness(&self) -> Endianness {
+ if self.is_little_endian() {
+ Endianness::Little
+ } else {
+ Endianness::Big
+ }
+ }
+
+ /// Return true if the file is little endian, false if it is big endian.
+ pub fn is_little_endian(&self) -> bool {
+ self.endian.is_little_endian()
+ }
+
+ /// Iterate over the images in this cache.
+ pub fn images<'cache>(&'cache self) -> DyldCacheImageIterator<'data, 'cache, E, R> {
+ DyldCacheImageIterator {
+ cache: self,
+ iter: self.images.iter(),
+ }
+ }
+
+ /// Find the address in a mapping and return the cache or subcache data it was found in,
+ /// together with the translated file offset.
+ pub fn data_and_offset_for_address(&self, address: u64) -> Option<(R, u64)> {
+ if let Some(file_offset) = address_to_file_offset(address, self.endian, self.mappings) {
+ return Some((self.data, file_offset));
+ }
+ for subcache in &self.subcaches {
+ if let Some(file_offset) =
+ address_to_file_offset(address, self.endian, subcache.mappings)
+ {
+ return Some((subcache.data, file_offset));
+ }
+ }
+ None
+ }
+}
+
+/// An iterator over all the images (dylibs) in the dyld shared cache.
+#[derive(Debug)]
+pub struct DyldCacheImageIterator<'data, 'cache, E = Endianness, R = &'data [u8]>
+where
+ E: Endian,
+ R: ReadRef<'data>,
+{
+ cache: &'cache DyldCache<'data, E, R>,
+ iter: slice::Iter<'data, macho::DyldCacheImageInfo<E>>,
+}
+
+impl<'data, 'cache, E, R> Iterator for DyldCacheImageIterator<'data, 'cache, E, R>
+where
+ E: Endian,
+ R: ReadRef<'data>,
+{
+ type Item = DyldCacheImage<'data, 'cache, E, R>;
+
+ fn next(&mut self) -> Option<DyldCacheImage<'data, 'cache, E, R>> {
+ let image_info = self.iter.next()?;
+ Some(DyldCacheImage {
+ cache: self.cache,
+ image_info,
+ })
+ }
+}
+
+/// One image (dylib) from inside the dyld shared cache.
+#[derive(Debug)]
+pub struct DyldCacheImage<'data, 'cache, E = Endianness, R = &'data [u8]>
+where
+ E: Endian,
+ R: ReadRef<'data>,
+{
+ pub(crate) cache: &'cache DyldCache<'data, E, R>,
+ image_info: &'data macho::DyldCacheImageInfo<E>,
+}
+
+impl<'data, 'cache, E, R> DyldCacheImage<'data, 'cache, E, R>
+where
+ E: Endian,
+ R: ReadRef<'data>,
+{
+ /// The file system path of this image.
+ pub fn path(&self) -> Result<&'data str> {
+ let path = self.image_info.path(self.cache.endian, self.cache.data)?;
+ // The path should always be ascii, so from_utf8 should always succeed.
+ let path = core::str::from_utf8(path).map_err(|_| Error("Path string not valid utf-8"))?;
+ Ok(path)
+ }
+
+ /// The subcache data which contains the Mach-O header for this image,
+ /// together with the file offset at which this image starts.
+ pub fn image_data_and_offset(&self) -> Result<(R, u64)> {
+ let address = self.image_info.address.get(self.cache.endian);
+ self.cache
+ .data_and_offset_for_address(address)
+ .ok_or(Error("Address not found in any mapping"))
+ }
+
+ /// Parse this image into an Object.
+ pub fn parse_object(&self) -> Result<File<'data, R>> {
+ File::parse_dyld_cache_image(self)
+ }
+}
+
+impl<E: Endian> macho::DyldCacheHeader<E> {
+ /// Read the dyld cache header.
+ pub fn parse<'data, R: ReadRef<'data>>(data: R) -> Result<&'data Self> {
+ data.read_at::<macho::DyldCacheHeader<E>>(0)
+ .read_error("Invalid dyld cache header size or alignment")
+ }
+
+ /// Returns (arch, endian) based on the magic string.
+ pub fn parse_magic(&self) -> Result<(Architecture, E)> {
+ let (arch, is_big_endian) = match &self.magic {
+ b"dyld_v1 i386\0" => (Architecture::I386, false),
+ b"dyld_v1 x86_64\0" => (Architecture::X86_64, false),
+ b"dyld_v1 x86_64h\0" => (Architecture::X86_64, false),
+ b"dyld_v1 ppc\0" => (Architecture::PowerPc, true),
+ b"dyld_v1 armv6\0" => (Architecture::Arm, false),
+ b"dyld_v1 armv7\0" => (Architecture::Arm, false),
+ b"dyld_v1 armv7f\0" => (Architecture::Arm, false),
+ b"dyld_v1 armv7s\0" => (Architecture::Arm, false),
+ b"dyld_v1 armv7k\0" => (Architecture::Arm, false),
+ b"dyld_v1 arm64\0" => (Architecture::Aarch64, false),
+ b"dyld_v1 arm64e\0" => (Architecture::Aarch64, false),
+ _ => return Err(Error("Unrecognized dyld cache magic")),
+ };
+ let endian =
+ E::from_big_endian(is_big_endian).read_error("Unsupported dyld cache endian")?;
+ Ok((arch, endian))
+ }
+
+ /// Return the mapping information table.
+ pub fn mappings<'data, R: ReadRef<'data>>(
+ &self,
+ endian: E,
+ data: R,
+ ) -> Result<&'data [macho::DyldCacheMappingInfo<E>]> {
+ data.read_slice_at::<macho::DyldCacheMappingInfo<E>>(
+ self.mapping_offset.get(endian).into(),
+ self.mapping_count.get(endian) as usize,
+ )
+ .read_error("Invalid dyld cache mapping size or alignment")
+ }
+
+ /// Return the information about subcaches, if present.
+ pub fn subcaches<'data, R: ReadRef<'data>>(
+ &self,
+ endian: E,
+ data: R,
+ ) -> Result<Option<&'data [macho::DyldSubCacheInfo<E>]>> {
+ if self.mapping_offset.get(endian) >= MIN_HEADER_SIZE_SUBCACHES {
+ let subcaches = data
+ .read_slice_at::<macho::DyldSubCacheInfo<E>>(
+ self.subcaches_offset.get(endian).into(),
+ self.subcaches_count.get(endian) as usize,
+ )
+ .read_error("Invalid dyld subcaches size or alignment")?;
+ Ok(Some(subcaches))
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Return the UUID for the .symbols subcache, if present.
+ pub fn symbols_subcache_uuid(&self, endian: E) -> Option<[u8; 16]> {
+ if self.mapping_offset.get(endian) >= MIN_HEADER_SIZE_SUBCACHES {
+ let uuid = self.symbols_subcache_uuid;
+ if uuid != [0; 16] {
+ return Some(uuid);
+ }
+ }
+ None
+ }
+
+ /// Return the image information table.
+ pub fn images<'data, R: ReadRef<'data>>(
+ &self,
+ endian: E,
+ data: R,
+ ) -> Result<&'data [macho::DyldCacheImageInfo<E>]> {
+ if self.mapping_offset.get(endian) >= MIN_HEADER_SIZE_SUBCACHES {
+ data.read_slice_at::<macho::DyldCacheImageInfo<E>>(
+ self.images_across_all_subcaches_offset.get(endian).into(),
+ self.images_across_all_subcaches_count.get(endian) as usize,
+ )
+ .read_error("Invalid dyld cache image size or alignment")
+ } else {
+ data.read_slice_at::<macho::DyldCacheImageInfo<E>>(
+ self.images_offset.get(endian).into(),
+ self.images_count.get(endian) as usize,
+ )
+ .read_error("Invalid dyld cache image size or alignment")
+ }
+ }
+}
+
+impl<E: Endian> macho::DyldCacheImageInfo<E> {
+ /// The file system path of this image.
+ pub fn path<'data, R: ReadRef<'data>>(&self, endian: E, data: R) -> Result<&'data [u8]> {
+ let r_start = self.path_file_offset.get(endian).into();
+ let r_end = data.len().read_error("Couldn't get data len()")?;
+ data.read_bytes_at_until(r_start..r_end, 0)
+ .read_error("Couldn't read dyld cache image path")
+ }
+
+ /// Find the file offset of the image by looking up its address in the mappings.
+ pub fn file_offset(
+ &self,
+ endian: E,
+ mappings: &[macho::DyldCacheMappingInfo<E>],
+ ) -> Result<u64> {
+ let address = self.address.get(endian);
+ address_to_file_offset(address, endian, mappings)
+ .read_error("Invalid dyld cache image address")
+ }
+}
+
+/// Find the file offset of the image by looking up its address in the mappings.
+pub fn address_to_file_offset<E: Endian>(
+ address: u64,
+ endian: E,
+ mappings: &[macho::DyldCacheMappingInfo<E>],
+) -> Option<u64> {
+ for mapping in mappings {
+ let mapping_address = mapping.address.get(endian);
+ if address >= mapping_address
+ && address < mapping_address.wrapping_add(mapping.size.get(endian))
+ {
+ return Some(address - mapping_address + mapping.file_offset.get(endian));
+ }
+ }
+ None
+}
diff --git a/vendor/object/src/read/macho/fat.rs b/vendor/object/src/read/macho/fat.rs
new file mode 100644
index 0000000..a481351
--- /dev/null
+++ b/vendor/object/src/read/macho/fat.rs
@@ -0,0 +1,122 @@
+use crate::read::{Architecture, Error, ReadError, ReadRef, Result};
+use crate::{macho, BigEndian, Pod};
+
+pub use macho::{FatArch32, FatArch64, FatHeader};
+
+impl FatHeader {
+ /// Attempt to parse a fat header.
+ ///
+ /// Does not validate the magic value.
+ pub fn parse<'data, R: ReadRef<'data>>(file: R) -> Result<&'data FatHeader> {
+ file.read_at::<FatHeader>(0)
+ .read_error("Invalid fat header size or alignment")
+ }
+
+ /// Attempt to parse a fat header and 32-bit fat arches.
+ pub fn parse_arch32<'data, R: ReadRef<'data>>(file: R) -> Result<&'data [FatArch32]> {
+ let mut offset = 0;
+ let header = file
+ .read::<FatHeader>(&mut offset)
+ .read_error("Invalid fat header size or alignment")?;
+ if header.magic.get(BigEndian) != macho::FAT_MAGIC {
+ return Err(Error("Invalid 32-bit fat magic"));
+ }
+ file.read_slice::<FatArch32>(&mut offset, header.nfat_arch.get(BigEndian) as usize)
+ .read_error("Invalid nfat_arch")
+ }
+
+ /// Attempt to parse a fat header and 64-bit fat arches.
+ pub fn parse_arch64<'data, R: ReadRef<'data>>(file: R) -> Result<&'data [FatArch64]> {
+ let mut offset = 0;
+ let header = file
+ .read::<FatHeader>(&mut offset)
+ .read_error("Invalid fat header size or alignment")?;
+ if header.magic.get(BigEndian) != macho::FAT_MAGIC_64 {
+ return Err(Error("Invalid 64-bit fat magic"));
+ }
+ file.read_slice::<FatArch64>(&mut offset, header.nfat_arch.get(BigEndian) as usize)
+ .read_error("Invalid nfat_arch")
+ }
+}
+
+/// A trait for generic access to [`macho::FatArch32`] and [`macho::FatArch64`].
+#[allow(missing_docs)]
+pub trait FatArch: Pod {
+ type Word: Into<u64>;
+
+ fn cputype(&self) -> u32;
+ fn cpusubtype(&self) -> u32;
+ fn offset(&self) -> Self::Word;
+ fn size(&self) -> Self::Word;
+ fn align(&self) -> u32;
+
+ fn architecture(&self) -> Architecture {
+ match self.cputype() {
+ macho::CPU_TYPE_ARM => Architecture::Arm,
+ macho::CPU_TYPE_ARM64 => Architecture::Aarch64,
+ macho::CPU_TYPE_X86 => Architecture::I386,
+ macho::CPU_TYPE_X86_64 => Architecture::X86_64,
+ macho::CPU_TYPE_MIPS => Architecture::Mips,
+ macho::CPU_TYPE_POWERPC => Architecture::PowerPc,
+ macho::CPU_TYPE_POWERPC64 => Architecture::PowerPc64,
+ _ => Architecture::Unknown,
+ }
+ }
+
+ fn file_range(&self) -> (u64, u64) {
+ (self.offset().into(), self.size().into())
+ }
+
+ fn data<'data, R: ReadRef<'data>>(&self, file: R) -> Result<&'data [u8]> {
+ file.read_bytes_at(self.offset().into(), self.size().into())
+ .read_error("Invalid fat arch offset or size")
+ }
+}
+
+impl FatArch for FatArch32 {
+ type Word = u32;
+
+ fn cputype(&self) -> u32 {
+ self.cputype.get(BigEndian)
+ }
+
+ fn cpusubtype(&self) -> u32 {
+ self.cpusubtype.get(BigEndian)
+ }
+
+ fn offset(&self) -> Self::Word {
+ self.offset.get(BigEndian)
+ }
+
+ fn size(&self) -> Self::Word {
+ self.size.get(BigEndian)
+ }
+
+ fn align(&self) -> u32 {
+ self.align.get(BigEndian)
+ }
+}
+
+impl FatArch for FatArch64 {
+ type Word = u64;
+
+ fn cputype(&self) -> u32 {
+ self.cputype.get(BigEndian)
+ }
+
+ fn cpusubtype(&self) -> u32 {
+ self.cpusubtype.get(BigEndian)
+ }
+
+ fn offset(&self) -> Self::Word {
+ self.offset.get(BigEndian)
+ }
+
+ fn size(&self) -> Self::Word {
+ self.size.get(BigEndian)
+ }
+
+ fn align(&self) -> u32 {
+ self.align.get(BigEndian)
+ }
+}
diff --git a/vendor/object/src/read/macho/file.rs b/vendor/object/src/read/macho/file.rs
new file mode 100644
index 0000000..0e04477
--- /dev/null
+++ b/vendor/object/src/read/macho/file.rs
@@ -0,0 +1,781 @@
+use alloc::vec::Vec;
+use core::fmt::Debug;
+use core::{mem, str};
+
+use crate::read::{
+ self, Architecture, ComdatKind, Error, Export, FileFlags, Import, NoDynamicRelocationIterator,
+ Object, ObjectComdat, ObjectKind, ObjectMap, ObjectSection, ReadError, ReadRef, Result,
+ SectionIndex, SubArchitecture, SymbolIndex,
+};
+use crate::{endian, macho, BigEndian, ByteString, Endian, Endianness, Pod};
+
+use super::{
+ DyldCacheImage, LoadCommandIterator, MachOSection, MachOSectionInternal, MachOSectionIterator,
+ MachOSegment, MachOSegmentInternal, MachOSegmentIterator, MachOSymbol, MachOSymbolIterator,
+ MachOSymbolTable, Nlist, Section, Segment, SymbolTable,
+};
+
+/// A 32-bit Mach-O object file.
+///
+/// This is a file that starts with [`macho::MachHeader32`], and corresponds
+/// to [`crate::FileKind::MachO32`].
+pub type MachOFile32<'data, Endian = Endianness, R = &'data [u8]> =
+ MachOFile<'data, macho::MachHeader32<Endian>, R>;
+/// A 64-bit Mach-O object file.
+///
+/// This is a file that starts with [`macho::MachHeader64`], and corresponds
+/// to [`crate::FileKind::MachO64`].
+pub type MachOFile64<'data, Endian = Endianness, R = &'data [u8]> =
+ MachOFile<'data, macho::MachHeader64<Endian>, R>;
+
+/// A partially parsed Mach-O file.
+///
+/// Most of the functionality of this type is provided by the [`Object`] trait implementation.
+#[derive(Debug)]
+pub struct MachOFile<'data, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ pub(super) endian: Mach::Endian,
+ pub(super) data: R,
+ pub(super) header_offset: u64,
+ pub(super) header: &'data Mach,
+ pub(super) segments: Vec<MachOSegmentInternal<'data, Mach, R>>,
+ pub(super) sections: Vec<MachOSectionInternal<'data, Mach>>,
+ pub(super) symbols: SymbolTable<'data, Mach, R>,
+}
+
+impl<'data, Mach, R> MachOFile<'data, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ /// Parse the raw Mach-O file data.
+ pub fn parse(data: R) -> Result<Self> {
+ let header = Mach::parse(data, 0)?;
+ let endian = header.endian()?;
+
+ // Build a list of segments and sections to make some operations more efficient.
+ let mut segments = Vec::new();
+ let mut sections = Vec::new();
+ let mut symbols = SymbolTable::default();
+ if let Ok(mut commands) = header.load_commands(endian, data, 0) {
+ while let Ok(Some(command)) = commands.next() {
+ if let Some((segment, section_data)) = Mach::Segment::from_command(command)? {
+ let segment_index = segments.len();
+ segments.push(MachOSegmentInternal { segment, data });
+ for section in segment.sections(endian, section_data)? {
+ let index = SectionIndex(sections.len() + 1);
+ sections.push(MachOSectionInternal::parse(index, segment_index, section));
+ }
+ } else if let Some(symtab) = command.symtab()? {
+ symbols = symtab.symbols(endian, data)?;
+ }
+ }
+ }
+
+ Ok(MachOFile {
+ endian,
+ data,
+ header_offset: 0,
+ header,
+ segments,
+ sections,
+ symbols,
+ })
+ }
+
+ /// Parse the Mach-O file for the given image from the dyld shared cache.
+ /// This will read different sections from different subcaches, if necessary.
+ pub fn parse_dyld_cache_image<'cache, E: Endian>(
+ image: &DyldCacheImage<'data, 'cache, E, R>,
+ ) -> Result<Self> {
+ let (data, header_offset) = image.image_data_and_offset()?;
+ let header = Mach::parse(data, header_offset)?;
+ let endian = header.endian()?;
+
+ // Build a list of sections to make some operations more efficient.
+ // Also build a list of segments, because we need to remember which ReadRef
+ // to read each section's data from. Only the DyldCache knows this information,
+ // and we won't have access to it once we've exited this function.
+ let mut segments = Vec::new();
+ let mut sections = Vec::new();
+ let mut linkedit_data: Option<R> = None;
+ let mut symtab = None;
+ if let Ok(mut commands) = header.load_commands(endian, data, header_offset) {
+ while let Ok(Some(command)) = commands.next() {
+ if let Some((segment, section_data)) = Mach::Segment::from_command(command)? {
+ // Each segment can be stored in a different subcache. Get the segment's
+ // address and look it up in the cache mappings, to find the correct cache data.
+ let addr = segment.vmaddr(endian).into();
+ let (data, _offset) = image
+ .cache
+ .data_and_offset_for_address(addr)
+ .read_error("Could not find segment data in dyld shared cache")?;
+ if segment.name() == macho::SEG_LINKEDIT.as_bytes() {
+ linkedit_data = Some(data);
+ }
+ let segment_index = segments.len();
+ segments.push(MachOSegmentInternal { segment, data });
+
+ for section in segment.sections(endian, section_data)? {
+ let index = SectionIndex(sections.len() + 1);
+ sections.push(MachOSectionInternal::parse(index, segment_index, section));
+ }
+ } else if let Some(st) = command.symtab()? {
+ symtab = Some(st);
+ }
+ }
+ }
+
+ // The symbols are found in the __LINKEDIT segment, so make sure to read them from the
+ // correct subcache.
+ let symbols = match (symtab, linkedit_data) {
+ (Some(symtab), Some(linkedit_data)) => symtab.symbols(endian, linkedit_data)?,
+ _ => SymbolTable::default(),
+ };
+
+ Ok(MachOFile {
+ endian,
+ data,
+ header_offset,
+ header,
+ segments,
+ sections,
+ symbols,
+ })
+ }
+
+ /// Return the section at the given index.
+ #[inline]
+ pub(super) fn section_internal(
+ &self,
+ index: SectionIndex,
+ ) -> Result<&MachOSectionInternal<'data, Mach>> {
+ index
+ .0
+ .checked_sub(1)
+ .and_then(|index| self.sections.get(index))
+ .read_error("Invalid Mach-O section index")
+ }
+
+ pub(super) fn segment_internal(
+ &self,
+ index: usize,
+ ) -> Result<&MachOSegmentInternal<'data, Mach, R>> {
+ self.segments
+ .get(index)
+ .read_error("Invalid Mach-O segment index")
+ }
+
+ /// Returns the endianness.
+ pub fn endian(&self) -> Mach::Endian {
+ self.endian
+ }
+
+ /// Returns the raw data.
+ pub fn data(&self) -> R {
+ self.data
+ }
+
+ /// Returns the raw Mach-O file header.
+ pub fn raw_header(&self) -> &'data Mach {
+ self.header
+ }
+
+ /// Return the `LC_BUILD_VERSION` load command if present.
+ pub fn build_version(&self) -> Result<Option<&'data macho::BuildVersionCommand<Mach::Endian>>> {
+ let mut commands = self
+ .header
+ .load_commands(self.endian, self.data, self.header_offset)?;
+ while let Some(command) = commands.next()? {
+ if let Some(build_version) = command.build_version()? {
+ return Ok(Some(build_version));
+ }
+ }
+ Ok(None)
+ }
+}
+
+impl<'data, Mach, R> read::private::Sealed for MachOFile<'data, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+}
+
+impl<'data, 'file, Mach, R> Object<'data, 'file> for MachOFile<'data, Mach, R>
+where
+ 'data: 'file,
+ Mach: MachHeader,
+ R: 'file + ReadRef<'data>,
+{
+ type Segment = MachOSegment<'data, 'file, Mach, R>;
+ type SegmentIterator = MachOSegmentIterator<'data, 'file, Mach, R>;
+ type Section = MachOSection<'data, 'file, Mach, R>;
+ type SectionIterator = MachOSectionIterator<'data, 'file, Mach, R>;
+ type Comdat = MachOComdat<'data, 'file, Mach, R>;
+ type ComdatIterator = MachOComdatIterator<'data, 'file, Mach, R>;
+ type Symbol = MachOSymbol<'data, 'file, Mach, R>;
+ type SymbolIterator = MachOSymbolIterator<'data, 'file, Mach, R>;
+ type SymbolTable = MachOSymbolTable<'data, 'file, Mach, R>;
+ type DynamicRelocationIterator = NoDynamicRelocationIterator;
+
+ fn architecture(&self) -> Architecture {
+ match self.header.cputype(self.endian) {
+ macho::CPU_TYPE_ARM => Architecture::Arm,
+ macho::CPU_TYPE_ARM64 => Architecture::Aarch64,
+ macho::CPU_TYPE_ARM64_32 => Architecture::Aarch64_Ilp32,
+ macho::CPU_TYPE_X86 => Architecture::I386,
+ macho::CPU_TYPE_X86_64 => Architecture::X86_64,
+ macho::CPU_TYPE_MIPS => Architecture::Mips,
+ macho::CPU_TYPE_POWERPC => Architecture::PowerPc,
+ macho::CPU_TYPE_POWERPC64 => Architecture::PowerPc64,
+ _ => Architecture::Unknown,
+ }
+ }
+
+ fn sub_architecture(&self) -> Option<SubArchitecture> {
+ match (
+ self.header.cputype(self.endian),
+ self.header.cpusubtype(self.endian),
+ ) {
+ (macho::CPU_TYPE_ARM64, macho::CPU_SUBTYPE_ARM64E) => Some(SubArchitecture::Arm64E),
+ _ => None,
+ }
+ }
+
+ #[inline]
+ fn is_little_endian(&self) -> bool {
+ self.header.is_little_endian()
+ }
+
+ #[inline]
+ fn is_64(&self) -> bool {
+ self.header.is_type_64()
+ }
+
+ fn kind(&self) -> ObjectKind {
+ match self.header.filetype(self.endian) {
+ macho::MH_OBJECT => ObjectKind::Relocatable,
+ macho::MH_EXECUTE => ObjectKind::Executable,
+ macho::MH_CORE => ObjectKind::Core,
+ macho::MH_DYLIB => ObjectKind::Dynamic,
+ _ => ObjectKind::Unknown,
+ }
+ }
+
+ fn segments(&'file self) -> MachOSegmentIterator<'data, 'file, Mach, R> {
+ MachOSegmentIterator {
+ file: self,
+ iter: self.segments.iter(),
+ }
+ }
+
+ fn section_by_name_bytes(
+ &'file self,
+ section_name: &[u8],
+ ) -> Option<MachOSection<'data, 'file, Mach, R>> {
+ // Translate the "." prefix to the "__" prefix used by OSX/Mach-O, eg
+ // ".debug_info" to "__debug_info", and limit to 16 bytes total.
+ let system_name = if section_name.starts_with(b".") {
+ if section_name.len() > 15 {
+ Some(&section_name[1..15])
+ } else {
+ Some(&section_name[1..])
+ }
+ } else {
+ None
+ };
+ let cmp_section_name = |section: &MachOSection<'data, 'file, Mach, R>| {
+ section
+ .name_bytes()
+ .map(|name| {
+ section_name == name
+ || system_name
+ .filter(|system_name| {
+ name.starts_with(b"__") && name[2..] == **system_name
+ })
+ .is_some()
+ })
+ .unwrap_or(false)
+ };
+
+ self.sections().find(cmp_section_name)
+ }
+
+ fn section_by_index(
+ &'file self,
+ index: SectionIndex,
+ ) -> Result<MachOSection<'data, 'file, Mach, R>> {
+ let internal = *self.section_internal(index)?;
+ Ok(MachOSection {
+ file: self,
+ internal,
+ })
+ }
+
+ fn sections(&'file self) -> MachOSectionIterator<'data, 'file, Mach, R> {
+ MachOSectionIterator {
+ file: self,
+ iter: self.sections.iter(),
+ }
+ }
+
+ fn comdats(&'file self) -> MachOComdatIterator<'data, 'file, Mach, R> {
+ MachOComdatIterator { file: self }
+ }
+
+ fn symbol_by_index(
+ &'file self,
+ index: SymbolIndex,
+ ) -> Result<MachOSymbol<'data, 'file, Mach, R>> {
+ let nlist = self.symbols.symbol(index.0)?;
+ MachOSymbol::new(self, index, nlist).read_error("Unsupported Mach-O symbol index")
+ }
+
+ fn symbols(&'file self) -> MachOSymbolIterator<'data, 'file, Mach, R> {
+ MachOSymbolIterator {
+ file: self,
+ index: 0,
+ }
+ }
+
+ #[inline]
+ fn symbol_table(&'file self) -> Option<MachOSymbolTable<'data, 'file, Mach, R>> {
+ Some(MachOSymbolTable { file: self })
+ }
+
+ fn dynamic_symbols(&'file self) -> MachOSymbolIterator<'data, 'file, Mach, R> {
+ MachOSymbolIterator {
+ file: self,
+ index: self.symbols.len(),
+ }
+ }
+
+ #[inline]
+ fn dynamic_symbol_table(&'file self) -> Option<MachOSymbolTable<'data, 'file, Mach, R>> {
+ None
+ }
+
+ fn object_map(&'file self) -> ObjectMap<'data> {
+ self.symbols.object_map(self.endian)
+ }
+
+ fn imports(&self) -> Result<Vec<Import<'data>>> {
+ let mut dysymtab = None;
+ let mut libraries = Vec::new();
+ let twolevel = self.header.flags(self.endian) & macho::MH_TWOLEVEL != 0;
+ if twolevel {
+ libraries.push(&[][..]);
+ }
+ let mut commands = self
+ .header
+ .load_commands(self.endian, self.data, self.header_offset)?;
+ while let Some(command) = commands.next()? {
+ if let Some(command) = command.dysymtab()? {
+ dysymtab = Some(command);
+ }
+ if twolevel {
+ if let Some(dylib) = command.dylib()? {
+ libraries.push(command.string(self.endian, dylib.dylib.name)?);
+ }
+ }
+ }
+
+ let mut imports = Vec::new();
+ if let Some(dysymtab) = dysymtab {
+ let index = dysymtab.iundefsym.get(self.endian) as usize;
+ let number = dysymtab.nundefsym.get(self.endian) as usize;
+ for i in index..(index.wrapping_add(number)) {
+ let symbol = self.symbols.symbol(i)?;
+ let name = symbol.name(self.endian, self.symbols.strings())?;
+ let library = if twolevel {
+ libraries
+ .get(symbol.library_ordinal(self.endian) as usize)
+ .copied()
+ .read_error("Invalid Mach-O symbol library ordinal")?
+ } else {
+ &[]
+ };
+ imports.push(Import {
+ name: ByteString(name),
+ library: ByteString(library),
+ });
+ }
+ }
+ Ok(imports)
+ }
+
+ fn exports(&self) -> Result<Vec<Export<'data>>> {
+ let mut dysymtab = None;
+ let mut commands = self
+ .header
+ .load_commands(self.endian, self.data, self.header_offset)?;
+ while let Some(command) = commands.next()? {
+ if let Some(command) = command.dysymtab()? {
+ dysymtab = Some(command);
+ break;
+ }
+ }
+
+ let mut exports = Vec::new();
+ if let Some(dysymtab) = dysymtab {
+ let index = dysymtab.iextdefsym.get(self.endian) as usize;
+ let number = dysymtab.nextdefsym.get(self.endian) as usize;
+ for i in index..(index.wrapping_add(number)) {
+ let symbol = self.symbols.symbol(i)?;
+ let name = symbol.name(self.endian, self.symbols.strings())?;
+ let address = symbol.n_value(self.endian).into();
+ exports.push(Export {
+ name: ByteString(name),
+ address,
+ });
+ }
+ }
+ Ok(exports)
+ }
+
+ #[inline]
+ fn dynamic_relocations(&'file self) -> Option<NoDynamicRelocationIterator> {
+ None
+ }
+
+ fn has_debug_symbols(&self) -> bool {
+ self.section_by_name(".debug_info").is_some()
+ }
+
+ fn mach_uuid(&self) -> Result<Option<[u8; 16]>> {
+ self.header.uuid(self.endian, self.data, self.header_offset)
+ }
+
+ fn relative_address_base(&self) -> u64 {
+ 0
+ }
+
+ fn entry(&self) -> u64 {
+ if let Ok(mut commands) =
+ self.header
+ .load_commands(self.endian, self.data, self.header_offset)
+ {
+ while let Ok(Some(command)) = commands.next() {
+ if let Ok(Some(command)) = command.entry_point() {
+ return command.entryoff.get(self.endian);
+ }
+ }
+ }
+ 0
+ }
+
+ fn flags(&self) -> FileFlags {
+ FileFlags::MachO {
+ flags: self.header.flags(self.endian),
+ }
+ }
+}
+
+/// An iterator for the COMDAT section groups in a [`MachOFile64`].
+pub type MachOComdatIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOComdatIterator<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// An iterator for the COMDAT section groups in a [`MachOFile64`].
+pub type MachOComdatIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOComdatIterator<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// An iterator for the COMDAT section groups in a [`MachOFile`].
+///
+/// This is a stub that doesn't implement any functionality.
+#[derive(Debug)]
+pub struct MachOComdatIterator<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ #[allow(unused)]
+ file: &'file MachOFile<'data, Mach, R>,
+}
+
+impl<'data, 'file, Mach, R> Iterator for MachOComdatIterator<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ type Item = MachOComdat<'data, 'file, Mach, R>;
+
+ #[inline]
+ fn next(&mut self) -> Option<Self::Item> {
+ None
+ }
+}
+
+/// A COMDAT section group in a [`MachOFile32`].
+pub type MachOComdat32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOComdat<'data, 'file, macho::MachHeader32<Endian>, R>;
+
+/// A COMDAT section group in a [`MachOFile64`].
+pub type MachOComdat64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOComdat<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// A COMDAT section group in a [`MachOFile`].
+///
+/// This is a stub that doesn't implement any functionality.
+#[derive(Debug)]
+pub struct MachOComdat<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ #[allow(unused)]
+ file: &'file MachOFile<'data, Mach, R>,
+}
+
+impl<'data, 'file, Mach, R> read::private::Sealed for MachOComdat<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+}
+
+impl<'data, 'file, Mach, R> ObjectComdat<'data> for MachOComdat<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ type SectionIterator = MachOComdatSectionIterator<'data, 'file, Mach, R>;
+
+ #[inline]
+ fn kind(&self) -> ComdatKind {
+ unreachable!();
+ }
+
+ #[inline]
+ fn symbol(&self) -> SymbolIndex {
+ unreachable!();
+ }
+
+ #[inline]
+ fn name_bytes(&self) -> Result<&[u8]> {
+ unreachable!();
+ }
+
+ #[inline]
+ fn name(&self) -> Result<&str> {
+ unreachable!();
+ }
+
+ #[inline]
+ fn sections(&self) -> Self::SectionIterator {
+ unreachable!();
+ }
+}
+
+/// An iterator for the sections in a COMDAT section group in a [`MachOFile32`].
+pub type MachOComdatSectionIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOComdatSectionIterator<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// An iterator for the sections in a COMDAT section group in a [`MachOFile64`].
+pub type MachOComdatSectionIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOComdatSectionIterator<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// An iterator for the sections in a COMDAT section group in a [`MachOFile`].
+///
+/// This is a stub that doesn't implement any functionality.
+#[derive(Debug)]
+pub struct MachOComdatSectionIterator<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ #[allow(unused)]
+ file: &'file MachOFile<'data, Mach, R>,
+}
+
+impl<'data, 'file, Mach, R> Iterator for MachOComdatSectionIterator<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ type Item = SectionIndex;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ None
+ }
+}
+
+/// A trait for generic access to [`macho::MachHeader32`] and [`macho::MachHeader64`].
+#[allow(missing_docs)]
+pub trait MachHeader: Debug + Pod {
+ type Word: Into<u64>;
+ type Endian: endian::Endian;
+ type Segment: Segment<Endian = Self::Endian, Section = Self::Section>;
+ type Section: Section<Endian = Self::Endian>;
+ type Nlist: Nlist<Endian = Self::Endian>;
+
+ /// 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 the `magic` field signifies big-endian.
+ fn is_big_endian(&self) -> bool;
+
+ /// Return true if the `magic` field signifies little-endian.
+ fn is_little_endian(&self) -> bool;
+
+ fn magic(&self) -> u32;
+ fn cputype(&self, endian: Self::Endian) -> u32;
+ fn cpusubtype(&self, endian: Self::Endian) -> u32;
+ fn filetype(&self, endian: Self::Endian) -> u32;
+ fn ncmds(&self, endian: Self::Endian) -> u32;
+ fn sizeofcmds(&self, endian: Self::Endian) -> u32;
+ fn flags(&self, endian: Self::Endian) -> u32;
+
+ // Provided methods.
+
+ /// Read the file header.
+ ///
+ /// Also checks that the magic field in the file header is a supported format.
+ fn parse<'data, R: ReadRef<'data>>(data: R, offset: u64) -> read::Result<&'data Self> {
+ let header = data
+ .read_at::<Self>(offset)
+ .read_error("Invalid Mach-O header size or alignment")?;
+ if !header.is_supported() {
+ return Err(Error("Unsupported Mach-O header"));
+ }
+ Ok(header)
+ }
+
+ fn is_supported(&self) -> bool {
+ self.is_little_endian() || self.is_big_endian()
+ }
+
+ fn endian(&self) -> Result<Self::Endian> {
+ Self::Endian::from_big_endian(self.is_big_endian()).read_error("Unsupported Mach-O endian")
+ }
+
+ fn load_commands<'data, R: ReadRef<'data>>(
+ &self,
+ endian: Self::Endian,
+ data: R,
+ header_offset: u64,
+ ) -> Result<LoadCommandIterator<'data, Self::Endian>> {
+ let data = data
+ .read_bytes_at(
+ header_offset + mem::size_of::<Self>() as u64,
+ self.sizeofcmds(endian).into(),
+ )
+ .read_error("Invalid Mach-O load command table size")?;
+ Ok(LoadCommandIterator::new(endian, data, self.ncmds(endian)))
+ }
+
+ /// Return the UUID from the `LC_UUID` load command, if one is present.
+ fn uuid<'data, R: ReadRef<'data>>(
+ &self,
+ endian: Self::Endian,
+ data: R,
+ header_offset: u64,
+ ) -> Result<Option<[u8; 16]>> {
+ let mut commands = self.load_commands(endian, data, header_offset)?;
+ while let Some(command) = commands.next()? {
+ if let Ok(Some(uuid)) = command.uuid() {
+ return Ok(Some(uuid.uuid));
+ }
+ }
+ Ok(None)
+ }
+}
+
+impl<Endian: endian::Endian> MachHeader for macho::MachHeader32<Endian> {
+ type Word = u32;
+ type Endian = Endian;
+ type Segment = macho::SegmentCommand32<Endian>;
+ type Section = macho::Section32<Endian>;
+ type Nlist = macho::Nlist32<Endian>;
+
+ fn is_type_64(&self) -> bool {
+ false
+ }
+
+ fn is_big_endian(&self) -> bool {
+ self.magic() == macho::MH_MAGIC
+ }
+
+ fn is_little_endian(&self) -> bool {
+ self.magic() == macho::MH_CIGAM
+ }
+
+ fn magic(&self) -> u32 {
+ self.magic.get(BigEndian)
+ }
+
+ fn cputype(&self, endian: Self::Endian) -> u32 {
+ self.cputype.get(endian)
+ }
+
+ fn cpusubtype(&self, endian: Self::Endian) -> u32 {
+ self.cpusubtype.get(endian)
+ }
+
+ fn filetype(&self, endian: Self::Endian) -> u32 {
+ self.filetype.get(endian)
+ }
+
+ fn ncmds(&self, endian: Self::Endian) -> u32 {
+ self.ncmds.get(endian)
+ }
+
+ fn sizeofcmds(&self, endian: Self::Endian) -> u32 {
+ self.sizeofcmds.get(endian)
+ }
+
+ fn flags(&self, endian: Self::Endian) -> u32 {
+ self.flags.get(endian)
+ }
+}
+
+impl<Endian: endian::Endian> MachHeader for macho::MachHeader64<Endian> {
+ type Word = u64;
+ type Endian = Endian;
+ type Segment = macho::SegmentCommand64<Endian>;
+ type Section = macho::Section64<Endian>;
+ type Nlist = macho::Nlist64<Endian>;
+
+ fn is_type_64(&self) -> bool {
+ true
+ }
+
+ fn is_big_endian(&self) -> bool {
+ self.magic() == macho::MH_MAGIC_64
+ }
+
+ fn is_little_endian(&self) -> bool {
+ self.magic() == macho::MH_CIGAM_64
+ }
+
+ fn magic(&self) -> u32 {
+ self.magic.get(BigEndian)
+ }
+
+ fn cputype(&self, endian: Self::Endian) -> u32 {
+ self.cputype.get(endian)
+ }
+
+ fn cpusubtype(&self, endian: Self::Endian) -> u32 {
+ self.cpusubtype.get(endian)
+ }
+
+ fn filetype(&self, endian: Self::Endian) -> u32 {
+ self.filetype.get(endian)
+ }
+
+ fn ncmds(&self, endian: Self::Endian) -> u32 {
+ self.ncmds.get(endian)
+ }
+
+ fn sizeofcmds(&self, endian: Self::Endian) -> u32 {
+ self.sizeofcmds.get(endian)
+ }
+
+ fn flags(&self, endian: Self::Endian) -> u32 {
+ self.flags.get(endian)
+ }
+}
diff --git a/vendor/object/src/read/macho/load_command.rs b/vendor/object/src/read/macho/load_command.rs
new file mode 100644
index 0000000..7225fbd
--- /dev/null
+++ b/vendor/object/src/read/macho/load_command.rs
@@ -0,0 +1,382 @@
+use core::marker::PhantomData;
+use core::mem;
+
+use crate::endian::Endian;
+use crate::macho;
+use crate::pod::Pod;
+use crate::read::macho::{MachHeader, SymbolTable};
+use crate::read::{Bytes, Error, ReadError, ReadRef, Result, StringTable};
+
+/// An iterator for the load commands from a [`MachHeader`].
+#[derive(Debug, Default, Clone, Copy)]
+pub struct LoadCommandIterator<'data, E: Endian> {
+ endian: E,
+ data: Bytes<'data>,
+ ncmds: u32,
+}
+
+impl<'data, E: Endian> LoadCommandIterator<'data, E> {
+ pub(super) fn new(endian: E, data: &'data [u8], ncmds: u32) -> Self {
+ LoadCommandIterator {
+ endian,
+ data: Bytes(data),
+ ncmds,
+ }
+ }
+
+ /// Return the next load command.
+ pub fn next(&mut self) -> Result<Option<LoadCommandData<'data, E>>> {
+ if self.ncmds == 0 {
+ return Ok(None);
+ }
+ let header = self
+ .data
+ .read_at::<macho::LoadCommand<E>>(0)
+ .read_error("Invalid Mach-O load command header")?;
+ let cmd = header.cmd.get(self.endian);
+ let cmdsize = header.cmdsize.get(self.endian) as usize;
+ if cmdsize < mem::size_of::<macho::LoadCommand<E>>() {
+ return Err(Error("Invalid Mach-O load command size"));
+ }
+ let data = self
+ .data
+ .read_bytes(cmdsize)
+ .read_error("Invalid Mach-O load command size")?;
+ self.ncmds -= 1;
+ Ok(Some(LoadCommandData {
+ cmd,
+ data,
+ marker: Default::default(),
+ }))
+ }
+}
+
+/// The data for a [`macho::LoadCommand`].
+#[derive(Debug, Clone, Copy)]
+pub struct LoadCommandData<'data, E: Endian> {
+ cmd: u32,
+ // Includes the header.
+ data: Bytes<'data>,
+ marker: PhantomData<E>,
+}
+
+impl<'data, E: Endian> LoadCommandData<'data, E> {
+ /// Return the `cmd` field of the [`macho::LoadCommand`].
+ ///
+ /// This is one of the `LC_` constants.
+ pub fn cmd(&self) -> u32 {
+ self.cmd
+ }
+
+ /// Return the `cmdsize` field of the [`macho::LoadCommand`].
+ pub fn cmdsize(&self) -> u32 {
+ self.data.len() as u32
+ }
+
+ /// Parse the data as the given type.
+ #[inline]
+ pub fn data<T: Pod>(&self) -> Result<&'data T> {
+ self.data
+ .read_at(0)
+ .read_error("Invalid Mach-O command size")
+ }
+
+ /// Raw bytes of this [`macho::LoadCommand`] structure.
+ pub fn raw_data(&self) -> &'data [u8] {
+ self.data.0
+ }
+
+ /// Parse a load command string value.
+ ///
+ /// Strings used by load commands are specified by offsets that are
+ /// relative to the load command header.
+ pub fn string(&self, endian: E, s: macho::LcStr<E>) -> Result<&'data [u8]> {
+ self.data
+ .read_string_at(s.offset.get(endian) as usize)
+ .read_error("Invalid load command string offset")
+ }
+
+ /// Parse the command data according to the `cmd` field.
+ pub fn variant(&self) -> Result<LoadCommandVariant<'data, E>> {
+ Ok(match self.cmd {
+ macho::LC_SEGMENT => {
+ let mut data = self.data;
+ let segment = data.read().read_error("Invalid Mach-O command size")?;
+ LoadCommandVariant::Segment32(segment, data.0)
+ }
+ macho::LC_SYMTAB => LoadCommandVariant::Symtab(self.data()?),
+ macho::LC_THREAD | macho::LC_UNIXTHREAD => {
+ let mut data = self.data;
+ let thread = data.read().read_error("Invalid Mach-O command size")?;
+ LoadCommandVariant::Thread(thread, data.0)
+ }
+ macho::LC_DYSYMTAB => LoadCommandVariant::Dysymtab(self.data()?),
+ macho::LC_LOAD_DYLIB
+ | macho::LC_LOAD_WEAK_DYLIB
+ | macho::LC_REEXPORT_DYLIB
+ | macho::LC_LAZY_LOAD_DYLIB
+ | macho::LC_LOAD_UPWARD_DYLIB => LoadCommandVariant::Dylib(self.data()?),
+ macho::LC_ID_DYLIB => LoadCommandVariant::IdDylib(self.data()?),
+ macho::LC_LOAD_DYLINKER => LoadCommandVariant::LoadDylinker(self.data()?),
+ macho::LC_ID_DYLINKER => LoadCommandVariant::IdDylinker(self.data()?),
+ macho::LC_PREBOUND_DYLIB => LoadCommandVariant::PreboundDylib(self.data()?),
+ macho::LC_ROUTINES => LoadCommandVariant::Routines32(self.data()?),
+ macho::LC_SUB_FRAMEWORK => LoadCommandVariant::SubFramework(self.data()?),
+ macho::LC_SUB_UMBRELLA => LoadCommandVariant::SubUmbrella(self.data()?),
+ macho::LC_SUB_CLIENT => LoadCommandVariant::SubClient(self.data()?),
+ macho::LC_SUB_LIBRARY => LoadCommandVariant::SubLibrary(self.data()?),
+ macho::LC_TWOLEVEL_HINTS => LoadCommandVariant::TwolevelHints(self.data()?),
+ macho::LC_PREBIND_CKSUM => LoadCommandVariant::PrebindCksum(self.data()?),
+ macho::LC_SEGMENT_64 => {
+ let mut data = self.data;
+ let segment = data.read().read_error("Invalid Mach-O command size")?;
+ LoadCommandVariant::Segment64(segment, data.0)
+ }
+ macho::LC_ROUTINES_64 => LoadCommandVariant::Routines64(self.data()?),
+ macho::LC_UUID => LoadCommandVariant::Uuid(self.data()?),
+ macho::LC_RPATH => LoadCommandVariant::Rpath(self.data()?),
+ macho::LC_CODE_SIGNATURE
+ | macho::LC_SEGMENT_SPLIT_INFO
+ | macho::LC_FUNCTION_STARTS
+ | macho::LC_DATA_IN_CODE
+ | macho::LC_DYLIB_CODE_SIGN_DRS
+ | macho::LC_LINKER_OPTIMIZATION_HINT
+ | macho::LC_DYLD_EXPORTS_TRIE
+ | macho::LC_DYLD_CHAINED_FIXUPS => LoadCommandVariant::LinkeditData(self.data()?),
+ macho::LC_ENCRYPTION_INFO => LoadCommandVariant::EncryptionInfo32(self.data()?),
+ macho::LC_DYLD_INFO | macho::LC_DYLD_INFO_ONLY => {
+ LoadCommandVariant::DyldInfo(self.data()?)
+ }
+ macho::LC_VERSION_MIN_MACOSX
+ | macho::LC_VERSION_MIN_IPHONEOS
+ | macho::LC_VERSION_MIN_TVOS
+ | macho::LC_VERSION_MIN_WATCHOS => LoadCommandVariant::VersionMin(self.data()?),
+ macho::LC_DYLD_ENVIRONMENT => LoadCommandVariant::DyldEnvironment(self.data()?),
+ macho::LC_MAIN => LoadCommandVariant::EntryPoint(self.data()?),
+ macho::LC_SOURCE_VERSION => LoadCommandVariant::SourceVersion(self.data()?),
+ macho::LC_ENCRYPTION_INFO_64 => LoadCommandVariant::EncryptionInfo64(self.data()?),
+ macho::LC_LINKER_OPTION => LoadCommandVariant::LinkerOption(self.data()?),
+ macho::LC_NOTE => LoadCommandVariant::Note(self.data()?),
+ macho::LC_BUILD_VERSION => LoadCommandVariant::BuildVersion(self.data()?),
+ macho::LC_FILESET_ENTRY => LoadCommandVariant::FilesetEntry(self.data()?),
+ _ => LoadCommandVariant::Other,
+ })
+ }
+
+ /// Try to parse this command as a [`macho::SegmentCommand32`].
+ ///
+ /// Returns the segment command and the data containing the sections.
+ pub fn segment_32(self) -> Result<Option<(&'data macho::SegmentCommand32<E>, &'data [u8])>> {
+ if self.cmd == macho::LC_SEGMENT {
+ let mut data = self.data;
+ let segment = data.read().read_error("Invalid Mach-O command size")?;
+ Ok(Some((segment, data.0)))
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Try to parse this command as a [`macho::SymtabCommand`].
+ ///
+ /// Returns the segment command and the data containing the sections.
+ pub fn symtab(self) -> Result<Option<&'data macho::SymtabCommand<E>>> {
+ if self.cmd == macho::LC_SYMTAB {
+ Some(self.data()).transpose()
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Try to parse this command as a [`macho::DysymtabCommand`].
+ pub fn dysymtab(self) -> Result<Option<&'data macho::DysymtabCommand<E>>> {
+ if self.cmd == macho::LC_DYSYMTAB {
+ Some(self.data()).transpose()
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Try to parse this command as a [`macho::DylibCommand`].
+ pub fn dylib(self) -> Result<Option<&'data macho::DylibCommand<E>>> {
+ if self.cmd == macho::LC_LOAD_DYLIB
+ || self.cmd == macho::LC_LOAD_WEAK_DYLIB
+ || self.cmd == macho::LC_REEXPORT_DYLIB
+ || self.cmd == macho::LC_LAZY_LOAD_DYLIB
+ || self.cmd == macho::LC_LOAD_UPWARD_DYLIB
+ {
+ Some(self.data()).transpose()
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Try to parse this command as a [`macho::UuidCommand`].
+ pub fn uuid(self) -> Result<Option<&'data macho::UuidCommand<E>>> {
+ if self.cmd == macho::LC_UUID {
+ Some(self.data()).transpose()
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Try to parse this command as a [`macho::SegmentCommand64`].
+ pub fn segment_64(self) -> Result<Option<(&'data macho::SegmentCommand64<E>, &'data [u8])>> {
+ if self.cmd == macho::LC_SEGMENT_64 {
+ let mut data = self.data;
+ let command = data.read().read_error("Invalid Mach-O command size")?;
+ Ok(Some((command, data.0)))
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Try to parse this command as a [`macho::DyldInfoCommand`].
+ pub fn dyld_info(self) -> Result<Option<&'data macho::DyldInfoCommand<E>>> {
+ if self.cmd == macho::LC_DYLD_INFO || self.cmd == macho::LC_DYLD_INFO_ONLY {
+ Some(self.data()).transpose()
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Try to parse this command as an [`macho::EntryPointCommand`].
+ pub fn entry_point(self) -> Result<Option<&'data macho::EntryPointCommand<E>>> {
+ if self.cmd == macho::LC_MAIN {
+ Some(self.data()).transpose()
+ } else {
+ Ok(None)
+ }
+ }
+
+ /// Try to parse this command as a [`macho::BuildVersionCommand`].
+ pub fn build_version(self) -> Result<Option<&'data macho::BuildVersionCommand<E>>> {
+ if self.cmd == macho::LC_BUILD_VERSION {
+ Some(self.data()).transpose()
+ } else {
+ Ok(None)
+ }
+ }
+}
+
+/// A [`macho::LoadCommand`] that has been interpreted according to its `cmd` field.
+#[derive(Debug, Clone, Copy)]
+#[non_exhaustive]
+pub enum LoadCommandVariant<'data, E: Endian> {
+ /// `LC_SEGMENT`
+ Segment32(&'data macho::SegmentCommand32<E>, &'data [u8]),
+ /// `LC_SYMTAB`
+ Symtab(&'data macho::SymtabCommand<E>),
+ // obsolete: `LC_SYMSEG`
+ //Symseg(&'data macho::SymsegCommand<E>),
+ /// `LC_THREAD` or `LC_UNIXTHREAD`
+ Thread(&'data macho::ThreadCommand<E>, &'data [u8]),
+ // obsolete: `LC_IDFVMLIB` or `LC_LOADFVMLIB`
+ //Fvmlib(&'data macho::FvmlibCommand<E>),
+ // obsolete: `LC_IDENT`
+ //Ident(&'data macho::IdentCommand<E>),
+ // internal: `LC_FVMFILE`
+ //Fvmfile(&'data macho::FvmfileCommand<E>),
+ // internal: `LC_PREPAGE`
+ /// `LC_DYSYMTAB`
+ Dysymtab(&'data macho::DysymtabCommand<E>),
+ /// `LC_LOAD_DYLIB`, `LC_LOAD_WEAK_DYLIB`, `LC_REEXPORT_DYLIB`,
+ /// `LC_LAZY_LOAD_DYLIB`, or `LC_LOAD_UPWARD_DYLIB`
+ Dylib(&'data macho::DylibCommand<E>),
+ /// `LC_ID_DYLIB`
+ IdDylib(&'data macho::DylibCommand<E>),
+ /// `LC_LOAD_DYLINKER`
+ LoadDylinker(&'data macho::DylinkerCommand<E>),
+ /// `LC_ID_DYLINKER`
+ IdDylinker(&'data macho::DylinkerCommand<E>),
+ /// `LC_PREBOUND_DYLIB`
+ PreboundDylib(&'data macho::PreboundDylibCommand<E>),
+ /// `LC_ROUTINES`
+ Routines32(&'data macho::RoutinesCommand32<E>),
+ /// `LC_SUB_FRAMEWORK`
+ SubFramework(&'data macho::SubFrameworkCommand<E>),
+ /// `LC_SUB_UMBRELLA`
+ SubUmbrella(&'data macho::SubUmbrellaCommand<E>),
+ /// `LC_SUB_CLIENT`
+ SubClient(&'data macho::SubClientCommand<E>),
+ /// `LC_SUB_LIBRARY`
+ SubLibrary(&'data macho::SubLibraryCommand<E>),
+ /// `LC_TWOLEVEL_HINTS`
+ TwolevelHints(&'data macho::TwolevelHintsCommand<E>),
+ /// `LC_PREBIND_CKSUM`
+ PrebindCksum(&'data macho::PrebindCksumCommand<E>),
+ /// `LC_SEGMENT_64`
+ Segment64(&'data macho::SegmentCommand64<E>, &'data [u8]),
+ /// `LC_ROUTINES_64`
+ Routines64(&'data macho::RoutinesCommand64<E>),
+ /// `LC_UUID`
+ Uuid(&'data macho::UuidCommand<E>),
+ /// `LC_RPATH`
+ Rpath(&'data macho::RpathCommand<E>),
+ /// `LC_CODE_SIGNATURE`, `LC_SEGMENT_SPLIT_INFO`, `LC_FUNCTION_STARTS`,
+ /// `LC_DATA_IN_CODE`, `LC_DYLIB_CODE_SIGN_DRS`, `LC_LINKER_OPTIMIZATION_HINT`,
+ /// `LC_DYLD_EXPORTS_TRIE`, or `LC_DYLD_CHAINED_FIXUPS`.
+ LinkeditData(&'data macho::LinkeditDataCommand<E>),
+ /// `LC_ENCRYPTION_INFO`
+ EncryptionInfo32(&'data macho::EncryptionInfoCommand32<E>),
+ /// `LC_DYLD_INFO` or `LC_DYLD_INFO_ONLY`
+ DyldInfo(&'data macho::DyldInfoCommand<E>),
+ /// `LC_VERSION_MIN_MACOSX`, `LC_VERSION_MIN_IPHONEOS`, `LC_VERSION_MIN_WATCHOS`,
+ /// or `LC_VERSION_MIN_TVOS`
+ VersionMin(&'data macho::VersionMinCommand<E>),
+ /// `LC_DYLD_ENVIRONMENT`
+ DyldEnvironment(&'data macho::DylinkerCommand<E>),
+ /// `LC_MAIN`
+ EntryPoint(&'data macho::EntryPointCommand<E>),
+ /// `LC_SOURCE_VERSION`
+ SourceVersion(&'data macho::SourceVersionCommand<E>),
+ /// `LC_ENCRYPTION_INFO_64`
+ EncryptionInfo64(&'data macho::EncryptionInfoCommand64<E>),
+ /// `LC_LINKER_OPTION`
+ LinkerOption(&'data macho::LinkerOptionCommand<E>),
+ /// `LC_NOTE`
+ Note(&'data macho::NoteCommand<E>),
+ /// `LC_BUILD_VERSION`
+ BuildVersion(&'data macho::BuildVersionCommand<E>),
+ /// `LC_FILESET_ENTRY`
+ FilesetEntry(&'data macho::FilesetEntryCommand<E>),
+ /// An unrecognized or obsolete load command.
+ Other,
+}
+
+impl<E: Endian> macho::SymtabCommand<E> {
+ /// Return the symbol table that this command references.
+ pub fn symbols<'data, Mach: MachHeader<Endian = E>, R: ReadRef<'data>>(
+ &self,
+ endian: E,
+ data: R,
+ ) -> Result<SymbolTable<'data, Mach, R>> {
+ let symbols = data
+ .read_slice_at(
+ self.symoff.get(endian).into(),
+ self.nsyms.get(endian) as usize,
+ )
+ .read_error("Invalid Mach-O symbol table offset or size")?;
+ let str_start: u64 = self.stroff.get(endian).into();
+ let str_end = str_start
+ .checked_add(self.strsize.get(endian).into())
+ .read_error("Invalid Mach-O string table length")?;
+ let strings = StringTable::new(data, str_start, str_end);
+ Ok(SymbolTable::new(symbols, strings))
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+ use crate::LittleEndian;
+
+ #[test]
+ fn cmd_size_invalid() {
+ let mut commands = LoadCommandIterator::new(LittleEndian, &[0; 8], 10);
+ assert!(commands.next().is_err());
+ let mut commands = LoadCommandIterator::new(LittleEndian, &[0, 0, 0, 0, 7, 0, 0, 0, 0], 10);
+ assert!(commands.next().is_err());
+ let mut commands = LoadCommandIterator::new(LittleEndian, &[0, 0, 0, 0, 8, 0, 0, 0, 0], 10);
+ assert!(commands.next().is_ok());
+ }
+}
diff --git a/vendor/object/src/read/macho/mod.rs b/vendor/object/src/read/macho/mod.rs
new file mode 100644
index 0000000..ab51ff3
--- /dev/null
+++ b/vendor/object/src/read/macho/mod.rs
@@ -0,0 +1,72 @@
+//! Support for reading Mach-O files.
+//!
+//! Traits are used to abstract over the difference between 32-bit and 64-bit Mach-O
+//! files. The primary trait for this is [`MachHeader`].
+//!
+//! ## High level API
+//!
+//! [`MachOFile`] implements the [`Object`](crate::read::Object) trait for Mach-O files.
+//! [`MachOFile`] is parameterised by [`MachHeader`] to allow reading both 32-bit and
+//! 64-bit Mach-O files. There are type aliases for these parameters ([`MachOFile32`] and
+//! [`MachOFile64`]).
+//!
+//! ## Low level API
+//!
+//! The [`MachHeader`] trait can be directly used to parse both [`macho::MachHeader32`]
+//! and [`macho::MachHeader64`]. Additionally, [`FatHeader`] and the [`FatArch`] trait
+//! can be used to iterate images in multi-architecture binaries, and [`DyldCache`] can
+//! be used to locate images in a dyld shared cache.
+//!
+//! ### Example for low level API
+//! ```no_run
+//! use object::macho;
+//! use object::read::macho::{MachHeader, Nlist};
+//! use std::error::Error;
+//! use std::fs;
+//!
+//! /// Reads a file and displays the name of each symbol.
+//! fn main() -> Result<(), Box<dyn Error>> {
+//! # #[cfg(feature = "std")] {
+//! let data = fs::read("path/to/binary")?;
+//! let header = macho::MachHeader64::<object::Endianness>::parse(&*data, 0)?;
+//! let endian = header.endian()?;
+//! let mut commands = header.load_commands(endian, &*data, 0)?;
+//! while let Some(command) = commands.next()? {
+//! if let Some(symtab_command) = command.symtab()? {
+//! let symbols = symtab_command.symbols::<macho::MachHeader64<_>, _>(endian, &*data)?;
+//! for symbol in symbols.iter() {
+//! let name = symbol.name(endian, symbols.strings())?;
+//! println!("{}", String::from_utf8_lossy(name));
+//! }
+//! }
+//! }
+//! # }
+//! Ok(())
+//! }
+//! ```
+#[cfg(doc)]
+use crate::macho;
+
+mod dyld_cache;
+pub use dyld_cache::*;
+
+mod fat;
+pub use fat::*;
+
+mod file;
+pub use file::*;
+
+mod load_command;
+pub use load_command::*;
+
+mod segment;
+pub use segment::*;
+
+mod section;
+pub use section::*;
+
+mod symbol;
+pub use symbol::*;
+
+mod relocation;
+pub use relocation::*;
diff --git a/vendor/object/src/read/macho/relocation.rs b/vendor/object/src/read/macho/relocation.rs
new file mode 100644
index 0000000..709f1a4
--- /dev/null
+++ b/vendor/object/src/read/macho/relocation.rs
@@ -0,0 +1,158 @@
+use core::{fmt, slice};
+
+use crate::endian::Endianness;
+use crate::macho;
+use crate::read::{
+ ReadRef, Relocation, RelocationEncoding, RelocationKind, RelocationTarget, SectionIndex,
+ SymbolIndex,
+};
+
+use super::{MachHeader, MachOFile};
+
+/// An iterator for the relocations in a [`MachOSection32`](super::MachOSection32).
+pub type MachORelocationIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachORelocationIterator<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// An iterator for the relocations in a [`MachOSection64`](super::MachOSection64).
+pub type MachORelocationIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachORelocationIterator<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// An iterator for the relocations in a [`MachOSection`](super::MachOSection).
+pub struct MachORelocationIterator<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ pub(super) file: &'file MachOFile<'data, Mach, R>,
+ pub(super) relocations: slice::Iter<'data, macho::Relocation<Mach::Endian>>,
+}
+
+impl<'data, 'file, Mach, R> Iterator for MachORelocationIterator<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ type Item = (u64, Relocation);
+
+ fn next(&mut self) -> Option<Self::Item> {
+ let mut paired_addend = 0;
+ loop {
+ let reloc = self.relocations.next()?;
+ let endian = self.file.endian;
+ let cputype = self.file.header.cputype(endian);
+ if reloc.r_scattered(endian, cputype) {
+ // FIXME: handle scattered relocations
+ // We need to add `RelocationTarget::Address` for this.
+ continue;
+ }
+ let reloc = reloc.info(self.file.endian);
+ let mut encoding = RelocationEncoding::Generic;
+ let kind = match cputype {
+ macho::CPU_TYPE_ARM => match (reloc.r_type, reloc.r_pcrel) {
+ (macho::ARM_RELOC_VANILLA, false) => RelocationKind::Absolute,
+ _ => RelocationKind::MachO {
+ value: reloc.r_type,
+ relative: reloc.r_pcrel,
+ },
+ },
+ macho::CPU_TYPE_ARM64 | macho::CPU_TYPE_ARM64_32 => {
+ match (reloc.r_type, reloc.r_pcrel) {
+ (macho::ARM64_RELOC_UNSIGNED, false) => RelocationKind::Absolute,
+ (macho::ARM64_RELOC_ADDEND, _) => {
+ paired_addend = i64::from(reloc.r_symbolnum)
+ .wrapping_shl(64 - 24)
+ .wrapping_shr(64 - 24);
+ continue;
+ }
+ _ => RelocationKind::MachO {
+ value: reloc.r_type,
+ relative: reloc.r_pcrel,
+ },
+ }
+ }
+ macho::CPU_TYPE_X86 => match (reloc.r_type, reloc.r_pcrel) {
+ (macho::GENERIC_RELOC_VANILLA, false) => RelocationKind::Absolute,
+ _ => RelocationKind::MachO {
+ value: reloc.r_type,
+ relative: reloc.r_pcrel,
+ },
+ },
+ macho::CPU_TYPE_X86_64 => match (reloc.r_type, reloc.r_pcrel) {
+ (macho::X86_64_RELOC_UNSIGNED, false) => RelocationKind::Absolute,
+ (macho::X86_64_RELOC_SIGNED, true) => {
+ encoding = RelocationEncoding::X86RipRelative;
+ RelocationKind::Relative
+ }
+ (macho::X86_64_RELOC_BRANCH, true) => {
+ encoding = RelocationEncoding::X86Branch;
+ RelocationKind::Relative
+ }
+ (macho::X86_64_RELOC_GOT, true) => RelocationKind::GotRelative,
+ (macho::X86_64_RELOC_GOT_LOAD, true) => {
+ encoding = RelocationEncoding::X86RipRelativeMovq;
+ RelocationKind::GotRelative
+ }
+ _ => RelocationKind::MachO {
+ value: reloc.r_type,
+ relative: reloc.r_pcrel,
+ },
+ },
+ _ => RelocationKind::MachO {
+ value: reloc.r_type,
+ relative: reloc.r_pcrel,
+ },
+ };
+ let size = 8 << reloc.r_length;
+ let target = if reloc.r_extern {
+ RelocationTarget::Symbol(SymbolIndex(reloc.r_symbolnum as usize))
+ } else {
+ RelocationTarget::Section(SectionIndex(reloc.r_symbolnum as usize))
+ };
+ let implicit_addend = paired_addend == 0;
+ let mut addend = paired_addend;
+ if reloc.r_pcrel {
+ // For PC relative relocations on some architectures, the
+ // addend does not include the offset required due to the
+ // PC being different from the place of the relocation.
+ // This differs from other file formats, so adjust the
+ // addend here to account for this.
+ match cputype {
+ macho::CPU_TYPE_X86 => {
+ addend -= 1 << reloc.r_length;
+ }
+ macho::CPU_TYPE_X86_64 => {
+ addend -= 1 << reloc.r_length;
+ match reloc.r_type {
+ macho::X86_64_RELOC_SIGNED_1 => addend -= 1,
+ macho::X86_64_RELOC_SIGNED_2 => addend -= 2,
+ macho::X86_64_RELOC_SIGNED_4 => addend -= 4,
+ _ => {}
+ }
+ }
+ // TODO: maybe missing support for some architectures and relocations
+ _ => {}
+ }
+ }
+ return Some((
+ reloc.r_address as u64,
+ Relocation {
+ kind,
+ encoding,
+ size,
+ target,
+ addend,
+ implicit_addend,
+ },
+ ));
+ }
+ }
+}
+
+impl<'data, 'file, Mach, R> fmt::Debug for MachORelocationIterator<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ f.debug_struct("MachORelocationIterator").finish()
+ }
+}
diff --git a/vendor/object/src/read/macho/section.rs b/vendor/object/src/read/macho/section.rs
new file mode 100644
index 0000000..7c79123
--- /dev/null
+++ b/vendor/object/src/read/macho/section.rs
@@ -0,0 +1,389 @@
+use core::fmt::Debug;
+use core::{fmt, result, slice, str};
+
+use crate::endian::{self, Endianness};
+use crate::macho;
+use crate::pod::Pod;
+use crate::read::{
+ self, CompressedData, CompressedFileRange, ObjectSection, ReadError, ReadRef, Result,
+ SectionFlags, SectionIndex, SectionKind,
+};
+
+use super::{MachHeader, MachOFile, MachORelocationIterator};
+
+/// An iterator for the sections in a [`MachOFile32`](super::MachOFile32).
+pub type MachOSectionIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSectionIterator<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// An iterator for the sections in a [`MachOFile64`](super::MachOFile64).
+pub type MachOSectionIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSectionIterator<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// An iterator for the sections in a [`MachOFile`].
+pub struct MachOSectionIterator<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ pub(super) file: &'file MachOFile<'data, Mach, R>,
+ pub(super) iter: slice::Iter<'file, MachOSectionInternal<'data, Mach>>,
+}
+
+impl<'data, 'file, Mach, R> fmt::Debug for MachOSectionIterator<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ // It's painful to do much better than this
+ f.debug_struct("MachOSectionIterator").finish()
+ }
+}
+
+impl<'data, 'file, Mach, R> Iterator for MachOSectionIterator<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ type Item = MachOSection<'data, 'file, Mach, R>;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ self.iter.next().map(|&internal| MachOSection {
+ file: self.file,
+ internal,
+ })
+ }
+}
+
+/// A section in a [`MachOFile32`](super::MachOFile32).
+pub type MachOSection32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSection<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// A section in a [`MachOFile64`](super::MachOFile64).
+pub type MachOSection64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSection<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// A section in a [`MachOFile`].
+///
+/// Most functionality is provided by the [`ObjectSection`] trait implementation.
+#[derive(Debug)]
+pub struct MachOSection<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ pub(super) file: &'file MachOFile<'data, Mach, R>,
+ pub(super) internal: MachOSectionInternal<'data, Mach>,
+}
+
+impl<'data, 'file, Mach, R> MachOSection<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ fn bytes(&self) -> Result<&'data [u8]> {
+ let segment_index = self.internal.segment_index;
+ let segment = self.file.segment_internal(segment_index)?;
+ self.internal
+ .section
+ .data(self.file.endian, segment.data)
+ .read_error("Invalid Mach-O section size or offset")
+ }
+}
+
+impl<'data, 'file, Mach, R> read::private::Sealed for MachOSection<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+}
+
+impl<'data, 'file, Mach, R> ObjectSection<'data> for MachOSection<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ type RelocationIterator = MachORelocationIterator<'data, 'file, Mach, R>;
+
+ #[inline]
+ fn index(&self) -> SectionIndex {
+ self.internal.index
+ }
+
+ #[inline]
+ fn address(&self) -> u64 {
+ self.internal.section.addr(self.file.endian).into()
+ }
+
+ #[inline]
+ fn size(&self) -> u64 {
+ self.internal.section.size(self.file.endian).into()
+ }
+
+ #[inline]
+ fn align(&self) -> u64 {
+ let align = self.internal.section.align(self.file.endian);
+ if align < 64 {
+ 1 << align
+ } else {
+ 0
+ }
+ }
+
+ #[inline]
+ fn file_range(&self) -> Option<(u64, u64)> {
+ self.internal.section.file_range(self.file.endian)
+ }
+
+ #[inline]
+ 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]> {
+ Ok(self.internal.section.name())
+ }
+
+ #[inline]
+ fn name(&self) -> Result<&str> {
+ str::from_utf8(self.internal.section.name())
+ .ok()
+ .read_error("Non UTF-8 Mach-O section name")
+ }
+
+ #[inline]
+ fn segment_name_bytes(&self) -> Result<Option<&[u8]>> {
+ Ok(Some(self.internal.section.segment_name()))
+ }
+
+ #[inline]
+ fn segment_name(&self) -> Result<Option<&str>> {
+ Ok(Some(
+ str::from_utf8(self.internal.section.segment_name())
+ .ok()
+ .read_error("Non UTF-8 Mach-O segment name")?,
+ ))
+ }
+
+ fn kind(&self) -> SectionKind {
+ self.internal.kind
+ }
+
+ fn relocations(&self) -> MachORelocationIterator<'data, 'file, Mach, R> {
+ MachORelocationIterator {
+ file: self.file,
+ relocations: self
+ .internal
+ .section
+ .relocations(self.file.endian, self.file.data)
+ .unwrap_or(&[])
+ .iter(),
+ }
+ }
+
+ fn flags(&self) -> SectionFlags {
+ SectionFlags::MachO {
+ flags: self.internal.section.flags(self.file.endian),
+ }
+ }
+}
+
+#[derive(Debug, Clone, Copy)]
+pub(super) struct MachOSectionInternal<'data, Mach: MachHeader> {
+ pub index: SectionIndex,
+ pub segment_index: usize,
+ pub kind: SectionKind,
+ pub section: &'data Mach::Section,
+}
+
+impl<'data, Mach: MachHeader> MachOSectionInternal<'data, Mach> {
+ pub(super) fn parse(
+ index: SectionIndex,
+ segment_index: usize,
+ section: &'data Mach::Section,
+ ) -> Self {
+ // TODO: we don't validate flags, should we?
+ let kind = match (section.segment_name(), section.name()) {
+ (b"__TEXT", b"__text") => SectionKind::Text,
+ (b"__TEXT", b"__const") => SectionKind::ReadOnlyData,
+ (b"__TEXT", b"__cstring") => SectionKind::ReadOnlyString,
+ (b"__TEXT", b"__literal4") => SectionKind::ReadOnlyData,
+ (b"__TEXT", b"__literal8") => SectionKind::ReadOnlyData,
+ (b"__TEXT", b"__literal16") => SectionKind::ReadOnlyData,
+ (b"__TEXT", b"__eh_frame") => SectionKind::ReadOnlyData,
+ (b"__TEXT", b"__gcc_except_tab") => SectionKind::ReadOnlyData,
+ (b"__DATA", b"__data") => SectionKind::Data,
+ (b"__DATA", b"__const") => SectionKind::ReadOnlyData,
+ (b"__DATA", b"__bss") => SectionKind::UninitializedData,
+ (b"__DATA", b"__common") => SectionKind::Common,
+ (b"__DATA", b"__thread_data") => SectionKind::Tls,
+ (b"__DATA", b"__thread_bss") => SectionKind::UninitializedTls,
+ (b"__DATA", b"__thread_vars") => SectionKind::TlsVariables,
+ (b"__DWARF", _) => SectionKind::Debug,
+ _ => SectionKind::Unknown,
+ };
+ MachOSectionInternal {
+ index,
+ segment_index,
+ kind,
+ section,
+ }
+ }
+}
+
+/// A trait for generic access to [`macho::Section32`] and [`macho::Section64`].
+#[allow(missing_docs)]
+pub trait Section: Debug + Pod {
+ type Word: Into<u64>;
+ type Endian: endian::Endian;
+
+ fn sectname(&self) -> &[u8; 16];
+ fn segname(&self) -> &[u8; 16];
+ fn addr(&self, endian: Self::Endian) -> Self::Word;
+ fn size(&self, endian: Self::Endian) -> Self::Word;
+ fn offset(&self, endian: Self::Endian) -> u32;
+ fn align(&self, endian: Self::Endian) -> u32;
+ fn reloff(&self, endian: Self::Endian) -> u32;
+ fn nreloc(&self, endian: Self::Endian) -> u32;
+ fn flags(&self, endian: Self::Endian) -> u32;
+
+ /// Return the `sectname` bytes up until the null terminator.
+ fn name(&self) -> &[u8] {
+ let sectname = &self.sectname()[..];
+ match memchr::memchr(b'\0', sectname) {
+ Some(end) => &sectname[..end],
+ None => sectname,
+ }
+ }
+
+ /// Return the `segname` bytes up until the null terminator.
+ fn segment_name(&self) -> &[u8] {
+ let segname = &self.segname()[..];
+ match memchr::memchr(b'\0', segname) {
+ Some(end) => &segname[..end],
+ None => segname,
+ }
+ }
+
+ /// Return the offset and size of the section in the file.
+ ///
+ /// Returns `None` for sections that have no data in the file.
+ fn file_range(&self, endian: Self::Endian) -> Option<(u64, u64)> {
+ match self.flags(endian) & macho::SECTION_TYPE {
+ macho::S_ZEROFILL | macho::S_GB_ZEROFILL | macho::S_THREAD_LOCAL_ZEROFILL => None,
+ _ => Some((self.offset(endian).into(), self.size(endian).into())),
+ }
+ }
+
+ /// Return the section data.
+ ///
+ /// Returns `Ok(&[])` if the section has no data.
+ /// Returns `Err` for invalid values.
+ fn data<'data, R: ReadRef<'data>>(
+ &self,
+ endian: Self::Endian,
+ data: R,
+ ) -> result::Result<&'data [u8], ()> {
+ if let Some((offset, size)) = self.file_range(endian) {
+ data.read_bytes_at(offset, size)
+ } else {
+ Ok(&[])
+ }
+ }
+
+ /// Return the relocation array.
+ ///
+ /// Returns `Err` for invalid values.
+ fn relocations<'data, R: ReadRef<'data>>(
+ &self,
+ endian: Self::Endian,
+ data: R,
+ ) -> Result<&'data [macho::Relocation<Self::Endian>]> {
+ data.read_slice_at(self.reloff(endian).into(), self.nreloc(endian) as usize)
+ .read_error("Invalid Mach-O relocations offset or number")
+ }
+}
+
+impl<Endian: endian::Endian> Section for macho::Section32<Endian> {
+ type Word = u32;
+ type Endian = Endian;
+
+ fn sectname(&self) -> &[u8; 16] {
+ &self.sectname
+ }
+ fn segname(&self) -> &[u8; 16] {
+ &self.segname
+ }
+ fn addr(&self, endian: Self::Endian) -> Self::Word {
+ self.addr.get(endian)
+ }
+ fn size(&self, endian: Self::Endian) -> Self::Word {
+ self.size.get(endian)
+ }
+ fn offset(&self, endian: Self::Endian) -> u32 {
+ self.offset.get(endian)
+ }
+ fn align(&self, endian: Self::Endian) -> u32 {
+ self.align.get(endian)
+ }
+ fn reloff(&self, endian: Self::Endian) -> u32 {
+ self.reloff.get(endian)
+ }
+ fn nreloc(&self, endian: Self::Endian) -> u32 {
+ self.nreloc.get(endian)
+ }
+ fn flags(&self, endian: Self::Endian) -> u32 {
+ self.flags.get(endian)
+ }
+}
+
+impl<Endian: endian::Endian> Section for macho::Section64<Endian> {
+ type Word = u64;
+ type Endian = Endian;
+
+ fn sectname(&self) -> &[u8; 16] {
+ &self.sectname
+ }
+ fn segname(&self) -> &[u8; 16] {
+ &self.segname
+ }
+ fn addr(&self, endian: Self::Endian) -> Self::Word {
+ self.addr.get(endian)
+ }
+ fn size(&self, endian: Self::Endian) -> Self::Word {
+ self.size.get(endian)
+ }
+ fn offset(&self, endian: Self::Endian) -> u32 {
+ self.offset.get(endian)
+ }
+ fn align(&self, endian: Self::Endian) -> u32 {
+ self.align.get(endian)
+ }
+ fn reloff(&self, endian: Self::Endian) -> u32 {
+ self.reloff.get(endian)
+ }
+ fn nreloc(&self, endian: Self::Endian) -> u32 {
+ self.nreloc.get(endian)
+ }
+ fn flags(&self, endian: Self::Endian) -> u32 {
+ self.flags.get(endian)
+ }
+}
diff --git a/vendor/object/src/read/macho/segment.rs b/vendor/object/src/read/macho/segment.rs
new file mode 100644
index 0000000..c889ad2
--- /dev/null
+++ b/vendor/object/src/read/macho/segment.rs
@@ -0,0 +1,303 @@
+use core::fmt::Debug;
+use core::{result, slice, str};
+
+use crate::endian::{self, Endianness};
+use crate::macho;
+use crate::pod::Pod;
+use crate::read::{self, ObjectSegment, ReadError, ReadRef, Result, SegmentFlags};
+
+use super::{LoadCommandData, MachHeader, MachOFile, Section};
+
+/// An iterator for the segments in a [`MachOFile32`](super::MachOFile32).
+pub type MachOSegmentIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSegmentIterator<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// An iterator for the segments in a [`MachOFile64`](super::MachOFile64).
+pub type MachOSegmentIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSegmentIterator<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// An iterator for the segments in a [`MachOFile`].
+#[derive(Debug)]
+pub struct MachOSegmentIterator<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ pub(super) file: &'file MachOFile<'data, Mach, R>,
+ pub(super) iter: slice::Iter<'file, MachOSegmentInternal<'data, Mach, R>>,
+}
+
+impl<'data, 'file, Mach, R> Iterator for MachOSegmentIterator<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ type Item = MachOSegment<'data, 'file, Mach, R>;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ self.iter.next().map(|internal| MachOSegment {
+ file: self.file,
+ internal,
+ })
+ }
+}
+
+/// A segment in a [`MachOFile32`](super::MachOFile32).
+pub type MachOSegment32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSegment<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// A segment in a [`MachOFile64`](super::MachOFile64).
+pub type MachOSegment64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSegment<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// A segment in a [`MachOFile`].
+///
+/// Most functionality is provided by the [`ObjectSegment`] trait implementation.
+#[derive(Debug)]
+pub struct MachOSegment<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ file: &'file MachOFile<'data, Mach, R>,
+ internal: &'file MachOSegmentInternal<'data, Mach, R>,
+}
+
+impl<'data, 'file, Mach, R> MachOSegment<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ fn bytes(&self) -> Result<&'data [u8]> {
+ self.internal
+ .segment
+ .data(self.file.endian, self.file.data)
+ .read_error("Invalid Mach-O segment size or offset")
+ }
+}
+
+impl<'data, 'file, Mach, R> read::private::Sealed for MachOSegment<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+}
+
+impl<'data, 'file, Mach, R> ObjectSegment<'data> for MachOSegment<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ #[inline]
+ fn address(&self) -> u64 {
+ self.internal.segment.vmaddr(self.file.endian).into()
+ }
+
+ #[inline]
+ fn size(&self) -> u64 {
+ self.internal.segment.vmsize(self.file.endian).into()
+ }
+
+ #[inline]
+ fn align(&self) -> u64 {
+ // Page size.
+ 0x1000
+ }
+
+ #[inline]
+ fn file_range(&self) -> (u64, u64) {
+ self.internal.segment.file_range(self.file.endian)
+ }
+
+ 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]>> {
+ Ok(Some(self.internal.segment.name()))
+ }
+
+ #[inline]
+ fn name(&self) -> Result<Option<&str>> {
+ Ok(Some(
+ str::from_utf8(self.internal.segment.name())
+ .ok()
+ .read_error("Non UTF-8 Mach-O segment name")?,
+ ))
+ }
+
+ #[inline]
+ fn flags(&self) -> SegmentFlags {
+ let flags = self.internal.segment.flags(self.file.endian);
+ let maxprot = self.internal.segment.maxprot(self.file.endian);
+ let initprot = self.internal.segment.initprot(self.file.endian);
+ SegmentFlags::MachO {
+ flags,
+ maxprot,
+ initprot,
+ }
+ }
+}
+
+#[derive(Debug, Clone, Copy)]
+pub(super) struct MachOSegmentInternal<'data, Mach: MachHeader, R: ReadRef<'data>> {
+ pub data: R,
+ pub segment: &'data Mach::Segment,
+}
+
+/// A trait for generic access to [`macho::SegmentCommand32`] and [`macho::SegmentCommand64`].
+#[allow(missing_docs)]
+pub trait Segment: Debug + Pod {
+ type Word: Into<u64>;
+ type Endian: endian::Endian;
+ type Section: Section<Endian = Self::Endian>;
+
+ fn from_command(command: LoadCommandData<'_, Self::Endian>) -> Result<Option<(&Self, &[u8])>>;
+
+ fn cmd(&self, endian: Self::Endian) -> u32;
+ fn cmdsize(&self, endian: Self::Endian) -> u32;
+ fn segname(&self) -> &[u8; 16];
+ fn vmaddr(&self, endian: Self::Endian) -> Self::Word;
+ fn vmsize(&self, endian: Self::Endian) -> Self::Word;
+ fn fileoff(&self, endian: Self::Endian) -> Self::Word;
+ fn filesize(&self, endian: Self::Endian) -> Self::Word;
+ fn maxprot(&self, endian: Self::Endian) -> u32;
+ fn initprot(&self, endian: Self::Endian) -> u32;
+ fn nsects(&self, endian: Self::Endian) -> u32;
+ fn flags(&self, endian: Self::Endian) -> u32;
+
+ /// Return the `segname` bytes up until the null terminator.
+ fn name(&self) -> &[u8] {
+ let segname = &self.segname()[..];
+ match memchr::memchr(b'\0', segname) {
+ Some(end) => &segname[..end],
+ None => segname,
+ }
+ }
+
+ /// Return the offset and size of the segment in the file.
+ fn file_range(&self, endian: Self::Endian) -> (u64, u64) {
+ (self.fileoff(endian).into(), self.filesize(endian).into())
+ }
+
+ /// Get the segment data from the file data.
+ ///
+ /// Returns `Err` for invalid values.
+ fn data<'data, R: ReadRef<'data>>(
+ &self,
+ endian: Self::Endian,
+ data: R,
+ ) -> result::Result<&'data [u8], ()> {
+ let (offset, size) = self.file_range(endian);
+ data.read_bytes_at(offset, size)
+ }
+
+ /// Get the array of sections from the data following the segment command.
+ ///
+ /// Returns `Err` for invalid values.
+ fn sections<'data, R: ReadRef<'data>>(
+ &self,
+ endian: Self::Endian,
+ section_data: R,
+ ) -> Result<&'data [Self::Section]> {
+ section_data
+ .read_slice_at(0, self.nsects(endian) as usize)
+ .read_error("Invalid Mach-O number of sections")
+ }
+}
+
+impl<Endian: endian::Endian> Segment for macho::SegmentCommand32<Endian> {
+ type Word = u32;
+ type Endian = Endian;
+ type Section = macho::Section32<Self::Endian>;
+
+ fn from_command(command: LoadCommandData<'_, Self::Endian>) -> Result<Option<(&Self, &[u8])>> {
+ command.segment_32()
+ }
+
+ fn cmd(&self, endian: Self::Endian) -> u32 {
+ self.cmd.get(endian)
+ }
+ fn cmdsize(&self, endian: Self::Endian) -> u32 {
+ self.cmdsize.get(endian)
+ }
+ fn segname(&self) -> &[u8; 16] {
+ &self.segname
+ }
+ fn vmaddr(&self, endian: Self::Endian) -> Self::Word {
+ self.vmaddr.get(endian)
+ }
+ fn vmsize(&self, endian: Self::Endian) -> Self::Word {
+ self.vmsize.get(endian)
+ }
+ fn fileoff(&self, endian: Self::Endian) -> Self::Word {
+ self.fileoff.get(endian)
+ }
+ fn filesize(&self, endian: Self::Endian) -> Self::Word {
+ self.filesize.get(endian)
+ }
+ fn maxprot(&self, endian: Self::Endian) -> u32 {
+ self.maxprot.get(endian)
+ }
+ fn initprot(&self, endian: Self::Endian) -> u32 {
+ self.initprot.get(endian)
+ }
+ fn nsects(&self, endian: Self::Endian) -> u32 {
+ self.nsects.get(endian)
+ }
+ fn flags(&self, endian: Self::Endian) -> u32 {
+ self.flags.get(endian)
+ }
+}
+
+impl<Endian: endian::Endian> Segment for macho::SegmentCommand64<Endian> {
+ type Word = u64;
+ type Endian = Endian;
+ type Section = macho::Section64<Self::Endian>;
+
+ fn from_command(command: LoadCommandData<'_, Self::Endian>) -> Result<Option<(&Self, &[u8])>> {
+ command.segment_64()
+ }
+
+ fn cmd(&self, endian: Self::Endian) -> u32 {
+ self.cmd.get(endian)
+ }
+ fn cmdsize(&self, endian: Self::Endian) -> u32 {
+ self.cmdsize.get(endian)
+ }
+ fn segname(&self) -> &[u8; 16] {
+ &self.segname
+ }
+ fn vmaddr(&self, endian: Self::Endian) -> Self::Word {
+ self.vmaddr.get(endian)
+ }
+ fn vmsize(&self, endian: Self::Endian) -> Self::Word {
+ self.vmsize.get(endian)
+ }
+ fn fileoff(&self, endian: Self::Endian) -> Self::Word {
+ self.fileoff.get(endian)
+ }
+ fn filesize(&self, endian: Self::Endian) -> Self::Word {
+ self.filesize.get(endian)
+ }
+ fn maxprot(&self, endian: Self::Endian) -> u32 {
+ self.maxprot.get(endian)
+ }
+ fn initprot(&self, endian: Self::Endian) -> u32 {
+ self.initprot.get(endian)
+ }
+ fn nsects(&self, endian: Self::Endian) -> u32 {
+ self.nsects.get(endian)
+ }
+ fn flags(&self, endian: Self::Endian) -> u32 {
+ self.flags.get(endian)
+ }
+}
diff --git a/vendor/object/src/read/macho/symbol.rs b/vendor/object/src/read/macho/symbol.rs
new file mode 100644
index 0000000..434361f
--- /dev/null
+++ b/vendor/object/src/read/macho/symbol.rs
@@ -0,0 +1,492 @@
+use alloc::vec::Vec;
+use core::fmt::Debug;
+use core::{fmt, slice, str};
+
+use crate::endian::{self, Endianness};
+use crate::macho;
+use crate::pod::Pod;
+use crate::read::util::StringTable;
+use crate::read::{
+ self, ObjectMap, ObjectMapEntry, ObjectSymbol, ObjectSymbolTable, ReadError, ReadRef, Result,
+ SectionIndex, SectionKind, SymbolFlags, SymbolIndex, SymbolKind, SymbolMap, SymbolMapEntry,
+ SymbolScope, SymbolSection,
+};
+
+use super::{MachHeader, MachOFile};
+
+/// A table of symbol entries in a Mach-O file.
+///
+/// Also includes the string table used for the symbol names.
+///
+/// Returned by [`macho::SymtabCommand::symbols`].
+#[derive(Debug, Clone, Copy)]
+pub struct SymbolTable<'data, Mach: MachHeader, R = &'data [u8]>
+where
+ R: ReadRef<'data>,
+{
+ symbols: &'data [Mach::Nlist],
+ strings: StringTable<'data, R>,
+}
+
+impl<'data, Mach: MachHeader, R: ReadRef<'data>> Default for SymbolTable<'data, Mach, R> {
+ fn default() -> Self {
+ SymbolTable {
+ symbols: &[],
+ strings: Default::default(),
+ }
+ }
+}
+
+impl<'data, Mach: MachHeader, R: ReadRef<'data>> SymbolTable<'data, Mach, R> {
+ #[inline]
+ pub(super) fn new(symbols: &'data [Mach::Nlist], strings: StringTable<'data, R>) -> Self {
+ SymbolTable { symbols, strings }
+ }
+
+ /// Return the string table used for the symbol names.
+ #[inline]
+ pub fn strings(&self) -> StringTable<'data, R> {
+ self.strings
+ }
+
+ /// Iterate over the symbols.
+ #[inline]
+ pub fn iter(&self) -> slice::Iter<'data, Mach::Nlist> {
+ self.symbols.iter()
+ }
+
+ /// Return true if the symbol table is empty.
+ #[inline]
+ pub fn is_empty(&self) -> bool {
+ self.symbols.is_empty()
+ }
+
+ /// The number of symbols.
+ #[inline]
+ pub fn len(&self) -> usize {
+ self.symbols.len()
+ }
+
+ /// Return the symbol at the given index.
+ pub fn symbol(&self, index: usize) -> Result<&'data Mach::Nlist> {
+ self.symbols
+ .get(index)
+ .read_error("Invalid Mach-O symbol index")
+ }
+
+ /// Construct a map from addresses to a user-defined map entry.
+ pub fn map<Entry: SymbolMapEntry, F: Fn(&'data Mach::Nlist) -> Option<Entry>>(
+ &self,
+ f: F,
+ ) -> SymbolMap<Entry> {
+ let mut symbols = Vec::new();
+ for nlist in self.symbols {
+ if !nlist.is_definition() {
+ continue;
+ }
+ if let Some(entry) = f(nlist) {
+ symbols.push(entry);
+ }
+ }
+ SymbolMap::new(symbols)
+ }
+
+ /// Construct a map from addresses to symbol names and object file names.
+ pub fn object_map(&self, endian: Mach::Endian) -> ObjectMap<'data> {
+ let mut symbols = Vec::new();
+ let mut objects = Vec::new();
+ let mut object = None;
+ let mut current_function = None;
+ // Each module starts with one or two N_SO symbols (path, or directory + filename)
+ // and one N_OSO symbol. The module is terminated by an empty N_SO symbol.
+ for nlist in self.symbols {
+ let n_type = nlist.n_type();
+ if n_type & macho::N_STAB == 0 {
+ continue;
+ }
+ // TODO: includes variables too (N_GSYM, N_STSYM). These may need to get their
+ // address from regular symbols though.
+ match n_type {
+ macho::N_SO => {
+ object = None;
+ }
+ macho::N_OSO => {
+ object = None;
+ if let Ok(name) = nlist.name(endian, self.strings) {
+ if !name.is_empty() {
+ object = Some(objects.len());
+ objects.push(name);
+ }
+ }
+ }
+ macho::N_FUN => {
+ if let Ok(name) = nlist.name(endian, self.strings) {
+ if !name.is_empty() {
+ current_function = Some((name, nlist.n_value(endian).into()))
+ } else if let Some((name, address)) = current_function.take() {
+ if let Some(object) = object {
+ symbols.push(ObjectMapEntry {
+ address,
+ size: nlist.n_value(endian).into(),
+ name,
+ object,
+ });
+ }
+ }
+ }
+ }
+ _ => {}
+ }
+ }
+ ObjectMap {
+ symbols: SymbolMap::new(symbols),
+ objects,
+ }
+ }
+}
+
+/// A symbol table in a [`MachOFile32`](super::MachOFile32).
+pub type MachOSymbolTable32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSymbolTable<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// A symbol table in a [`MachOFile64`](super::MachOFile64).
+pub type MachOSymbolTable64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSymbolTable<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// A symbol table in a [`MachOFile`].
+#[derive(Debug, Clone, Copy)]
+pub struct MachOSymbolTable<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ pub(super) file: &'file MachOFile<'data, Mach, R>,
+}
+
+impl<'data, 'file, Mach, R> read::private::Sealed for MachOSymbolTable<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+}
+
+impl<'data, 'file, Mach, R> ObjectSymbolTable<'data> for MachOSymbolTable<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ type Symbol = MachOSymbol<'data, 'file, Mach, R>;
+ type SymbolIterator = MachOSymbolIterator<'data, 'file, Mach, R>;
+
+ fn symbols(&self) -> Self::SymbolIterator {
+ MachOSymbolIterator {
+ file: self.file,
+ index: 0,
+ }
+ }
+
+ fn symbol_by_index(&self, index: SymbolIndex) -> Result<Self::Symbol> {
+ let nlist = self.file.symbols.symbol(index.0)?;
+ MachOSymbol::new(self.file, index, nlist).read_error("Unsupported Mach-O symbol index")
+ }
+}
+
+/// An iterator for the symbols in a [`MachOFile32`](super::MachOFile32).
+pub type MachOSymbolIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSymbolIterator<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// An iterator for the symbols in a [`MachOFile64`](super::MachOFile64).
+pub type MachOSymbolIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSymbolIterator<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// An iterator for the symbols in a [`MachOFile`].
+pub struct MachOSymbolIterator<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ pub(super) file: &'file MachOFile<'data, Mach, R>,
+ pub(super) index: usize,
+}
+
+impl<'data, 'file, Mach, R> fmt::Debug for MachOSymbolIterator<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ f.debug_struct("MachOSymbolIterator").finish()
+ }
+}
+
+impl<'data, 'file, Mach, R> Iterator for MachOSymbolIterator<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ type Item = MachOSymbol<'data, 'file, Mach, R>;
+
+ fn next(&mut self) -> Option<Self::Item> {
+ loop {
+ let index = self.index;
+ let nlist = self.file.symbols.symbols.get(index)?;
+ self.index += 1;
+ if let Some(symbol) = MachOSymbol::new(self.file, SymbolIndex(index), nlist) {
+ return Some(symbol);
+ }
+ }
+ }
+}
+
+/// A symbol in a [`MachOFile32`](super::MachOFile32).
+pub type MachOSymbol32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSymbol<'data, 'file, macho::MachHeader32<Endian>, R>;
+/// A symbol in a [`MachOFile64`](super::MachOFile64).
+pub type MachOSymbol64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
+ MachOSymbol<'data, 'file, macho::MachHeader64<Endian>, R>;
+
+/// A symbol in a [`MachOFile`].
+///
+/// Most functionality is provided by the [`ObjectSymbol`] trait implementation.
+#[derive(Debug, Clone, Copy)]
+pub struct MachOSymbol<'data, 'file, Mach, R = &'data [u8]>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ file: &'file MachOFile<'data, Mach, R>,
+ index: SymbolIndex,
+ nlist: &'data Mach::Nlist,
+}
+
+impl<'data, 'file, Mach, R> MachOSymbol<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ pub(super) fn new(
+ file: &'file MachOFile<'data, Mach, R>,
+ index: SymbolIndex,
+ nlist: &'data Mach::Nlist,
+ ) -> Option<Self> {
+ if nlist.n_type() & macho::N_STAB != 0 {
+ return None;
+ }
+ Some(MachOSymbol { file, index, nlist })
+ }
+}
+
+impl<'data, 'file, Mach, R> read::private::Sealed for MachOSymbol<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+}
+
+impl<'data, 'file, Mach, R> ObjectSymbol<'data> for MachOSymbol<'data, 'file, Mach, R>
+where
+ Mach: MachHeader,
+ R: ReadRef<'data>,
+{
+ #[inline]
+ fn index(&self) -> SymbolIndex {
+ self.index
+ }
+
+ fn name_bytes(&self) -> Result<&'data [u8]> {
+ self.nlist.name(self.file.endian, self.file.symbols.strings)
+ }
+
+ fn name(&self) -> Result<&'data str> {
+ let name = self.name_bytes()?;
+ str::from_utf8(name)
+ .ok()
+ .read_error("Non UTF-8 Mach-O symbol name")
+ }
+
+ #[inline]
+ fn address(&self) -> u64 {
+ self.nlist.n_value(self.file.endian).into()
+ }
+
+ #[inline]
+ fn size(&self) -> u64 {
+ 0
+ }
+
+ fn kind(&self) -> SymbolKind {
+ self.section()
+ .index()
+ .and_then(|index| self.file.section_internal(index).ok())
+ .map(|section| match section.kind {
+ SectionKind::Text => SymbolKind::Text,
+ SectionKind::Data
+ | SectionKind::ReadOnlyData
+ | SectionKind::ReadOnlyString
+ | SectionKind::UninitializedData
+ | SectionKind::Common => SymbolKind::Data,
+ SectionKind::Tls | SectionKind::UninitializedTls | SectionKind::TlsVariables => {
+ SymbolKind::Tls
+ }
+ _ => SymbolKind::Unknown,
+ })
+ .unwrap_or(SymbolKind::Unknown)
+ }
+
+ fn section(&self) -> SymbolSection {
+ match self.nlist.n_type() & macho::N_TYPE {
+ macho::N_UNDF => SymbolSection::Undefined,
+ macho::N_ABS => SymbolSection::Absolute,
+ macho::N_SECT => {
+ let n_sect = self.nlist.n_sect();
+ if n_sect != 0 {
+ SymbolSection::Section(SectionIndex(n_sect as usize))
+ } else {
+ SymbolSection::Unknown
+ }
+ }
+ _ => SymbolSection::Unknown,
+ }
+ }
+
+ #[inline]
+ fn is_undefined(&self) -> bool {
+ self.nlist.n_type() & macho::N_TYPE == macho::N_UNDF
+ }
+
+ #[inline]
+ fn is_definition(&self) -> bool {
+ self.nlist.is_definition()
+ }
+
+ #[inline]
+ fn is_common(&self) -> bool {
+ // Mach-O common symbols are based on section, not symbol
+ false
+ }
+
+ #[inline]
+ fn is_weak(&self) -> bool {
+ self.nlist.n_desc(self.file.endian) & (macho::N_WEAK_REF | macho::N_WEAK_DEF) != 0
+ }
+
+ fn scope(&self) -> SymbolScope {
+ let n_type = self.nlist.n_type();
+ if n_type & macho::N_TYPE == macho::N_UNDF {
+ SymbolScope::Unknown
+ } else if n_type & macho::N_EXT == 0 {
+ SymbolScope::Compilation
+ } else if n_type & macho::N_PEXT != 0 {
+ SymbolScope::Linkage
+ } else {
+ SymbolScope::Dynamic
+ }
+ }
+
+ #[inline]
+ fn is_global(&self) -> bool {
+ self.scope() != SymbolScope::Compilation
+ }
+
+ #[inline]
+ fn is_local(&self) -> bool {
+ self.scope() == SymbolScope::Compilation
+ }
+
+ #[inline]
+ fn flags(&self) -> SymbolFlags<SectionIndex, SymbolIndex> {
+ let n_desc = self.nlist.n_desc(self.file.endian);
+ SymbolFlags::MachO { n_desc }
+ }
+}
+
+/// A trait for generic access to [`macho::Nlist32`] and [`macho::Nlist64`].
+#[allow(missing_docs)]
+pub trait Nlist: Debug + Pod {
+ type Word: Into<u64>;
+ type Endian: endian::Endian;
+
+ fn n_strx(&self, endian: Self::Endian) -> u32;
+ fn n_type(&self) -> u8;
+ fn n_sect(&self) -> u8;
+ fn n_desc(&self, endian: Self::Endian) -> u16;
+ fn n_value(&self, endian: Self::Endian) -> Self::Word;
+
+ fn name<'data, R: ReadRef<'data>>(
+ &self,
+ endian: Self::Endian,
+ strings: StringTable<'data, R>,
+ ) -> Result<&'data [u8]> {
+ strings
+ .get(self.n_strx(endian))
+ .read_error("Invalid Mach-O symbol name offset")
+ }
+
+ /// Return true if this is a STAB symbol.
+ ///
+ /// This determines the meaning of the `n_type` field.
+ fn is_stab(&self) -> bool {
+ self.n_type() & macho::N_STAB != 0
+ }
+
+ /// Return true if this is an undefined symbol.
+ fn is_undefined(&self) -> bool {
+ let n_type = self.n_type();
+ n_type & macho::N_STAB == 0 && n_type & macho::N_TYPE == macho::N_UNDF
+ }
+
+ /// Return true if the symbol is a definition of a function or data object.
+ fn is_definition(&self) -> bool {
+ let n_type = self.n_type();
+ n_type & macho::N_STAB == 0 && n_type & macho::N_TYPE == macho::N_SECT
+ }
+
+ /// Return the library ordinal.
+ ///
+ /// This is either a 1-based index into the dylib load commands,
+ /// or a special ordinal.
+ #[inline]
+ fn library_ordinal(&self, endian: Self::Endian) -> u8 {
+ (self.n_desc(endian) >> 8) as u8
+ }
+}
+
+impl<Endian: endian::Endian> Nlist for macho::Nlist32<Endian> {
+ type Word = u32;
+ type Endian = Endian;
+
+ fn n_strx(&self, endian: Self::Endian) -> u32 {
+ self.n_strx.get(endian)
+ }
+ fn n_type(&self) -> u8 {
+ self.n_type
+ }
+ fn n_sect(&self) -> u8 {
+ self.n_sect
+ }
+ fn n_desc(&self, endian: Self::Endian) -> u16 {
+ self.n_desc.get(endian)
+ }
+ fn n_value(&self, endian: Self::Endian) -> Self::Word {
+ self.n_value.get(endian)
+ }
+}
+
+impl<Endian: endian::Endian> Nlist for macho::Nlist64<Endian> {
+ type Word = u64;
+ type Endian = Endian;
+
+ fn n_strx(&self, endian: Self::Endian) -> u32 {
+ self.n_strx.get(endian)
+ }
+ fn n_type(&self) -> u8 {
+ self.n_type
+ }
+ fn n_sect(&self) -> u8 {
+ self.n_sect
+ }
+ fn n_desc(&self, endian: Self::Endian) -> u16 {
+ self.n_desc.get(endian)
+ }
+ fn n_value(&self, endian: Self::Endian) -> Self::Word {
+ self.n_value.get(endian)
+ }
+}
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