Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 831 insertions, 0 deletions

diff --git a/third_party/rust/object/src/endian.rs b/third_party/rust/object/src/endian.rs
new file mode 100644
index 0000000000..e4a36ba13f
--- /dev/null
+++ b/third_party/rust/object/src/endian.rs
@@ -0,0 +1,831 @@
+//! Types for compile-time and run-time endianness.
+
+use crate::pod::Pod;
+use core::fmt::{self, Debug};
+use core::marker::PhantomData;
+
+/// A trait for using an endianness specification.
+///
+/// Provides methods for converting between the specified endianness and
+/// the native endianness of the target machine.
+///
+/// This trait does not require that the endianness is known at compile time.
+pub trait Endian: Debug + Default + Clone + Copy + PartialEq + Eq + 'static {
+    /// Construct a specification for the endianness of some values.
+    ///
+    /// Returns `None` if the type does not support specifying the given endianness.
+    fn from_big_endian(big_endian: bool) -> Option<Self>;
+
+    /// Construct a specification for the endianness of some values.
+    ///
+    /// Returns `None` if the type does not support specifying the given endianness.
+    fn from_little_endian(little_endian: bool) -> Option<Self> {
+        Self::from_big_endian(!little_endian)
+    }
+
+    /// Return true for big endian byte order.
+    fn is_big_endian(self) -> bool;
+
+    /// Return true for little endian byte order.
+    #[inline]
+    fn is_little_endian(self) -> bool {
+        !self.is_big_endian()
+    }
+
+    /// Converts an unsigned 16 bit integer to native endian.
+    #[inline]
+    fn read_u16(self, n: u16) -> u16 {
+        if self.is_big_endian() {
+            u16::from_be(n)
+        } else {
+            u16::from_le(n)
+        }
+    }
+
+    /// Converts an unsigned 32 bit integer to native endian.
+    #[inline]
+    fn read_u32(self, n: u32) -> u32 {
+        if self.is_big_endian() {
+            u32::from_be(n)
+        } else {
+            u32::from_le(n)
+        }
+    }
+
+    /// Converts an unsigned 64 bit integer to native endian.
+    #[inline]
+    fn read_u64(self, n: u64) -> u64 {
+        if self.is_big_endian() {
+            u64::from_be(n)
+        } else {
+            u64::from_le(n)
+        }
+    }
+
+    /// Converts a signed 16 bit integer to native endian.
+    #[inline]
+    fn read_i16(self, n: i16) -> i16 {
+        if self.is_big_endian() {
+            i16::from_be(n)
+        } else {
+            i16::from_le(n)
+        }
+    }
+
+    /// Converts a signed 32 bit integer to native endian.
+    #[inline]
+    fn read_i32(self, n: i32) -> i32 {
+        if self.is_big_endian() {
+            i32::from_be(n)
+        } else {
+            i32::from_le(n)
+        }
+    }
+
+    /// Converts a signed 64 bit integer to native endian.
+    #[inline]
+    fn read_i64(self, n: i64) -> i64 {
+        if self.is_big_endian() {
+            i64::from_be(n)
+        } else {
+            i64::from_le(n)
+        }
+    }
+
+    /// Converts an unaligned unsigned 16 bit integer to native endian.
+    #[inline]
+    fn read_u16_bytes(self, n: [u8; 2]) -> u16 {
+        if self.is_big_endian() {
+            u16::from_be_bytes(n)
+        } else {
+            u16::from_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned unsigned 32 bit integer to native endian.
+    #[inline]
+    fn read_u32_bytes(self, n: [u8; 4]) -> u32 {
+        if self.is_big_endian() {
+            u32::from_be_bytes(n)
+        } else {
+            u32::from_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned unsigned 64 bit integer to native endian.
+    #[inline]
+    fn read_u64_bytes(self, n: [u8; 8]) -> u64 {
+        if self.is_big_endian() {
+            u64::from_be_bytes(n)
+        } else {
+            u64::from_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned signed 16 bit integer to native endian.
+    #[inline]
+    fn read_i16_bytes(self, n: [u8; 2]) -> i16 {
+        if self.is_big_endian() {
+            i16::from_be_bytes(n)
+        } else {
+            i16::from_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned signed 32 bit integer to native endian.
+    #[inline]
+    fn read_i32_bytes(self, n: [u8; 4]) -> i32 {
+        if self.is_big_endian() {
+            i32::from_be_bytes(n)
+        } else {
+            i32::from_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned signed 64 bit integer to native endian.
+    #[inline]
+    fn read_i64_bytes(self, n: [u8; 8]) -> i64 {
+        if self.is_big_endian() {
+            i64::from_be_bytes(n)
+        } else {
+            i64::from_le_bytes(n)
+        }
+    }
+
+    /// Converts an unsigned 16 bit integer from native endian.
+    #[inline]
+    fn write_u16(self, n: u16) -> u16 {
+        if self.is_big_endian() {
+            u16::to_be(n)
+        } else {
+            u16::to_le(n)
+        }
+    }
+
+    /// Converts an unsigned 32 bit integer from native endian.
+    #[inline]
+    fn write_u32(self, n: u32) -> u32 {
+        if self.is_big_endian() {
+            u32::to_be(n)
+        } else {
+            u32::to_le(n)
+        }
+    }
+
+    /// Converts an unsigned 64 bit integer from native endian.
+    #[inline]
+    fn write_u64(self, n: u64) -> u64 {
+        if self.is_big_endian() {
+            u64::to_be(n)
+        } else {
+            u64::to_le(n)
+        }
+    }
+
+    /// Converts a signed 16 bit integer from native endian.
+    #[inline]
+    fn write_i16(self, n: i16) -> i16 {
+        if self.is_big_endian() {
+            i16::to_be(n)
+        } else {
+            i16::to_le(n)
+        }
+    }
+
+    /// Converts a signed 32 bit integer from native endian.
+    #[inline]
+    fn write_i32(self, n: i32) -> i32 {
+        if self.is_big_endian() {
+            i32::to_be(n)
+        } else {
+            i32::to_le(n)
+        }
+    }
+
+    /// Converts a signed 64 bit integer from native endian.
+    #[inline]
+    fn write_i64(self, n: i64) -> i64 {
+        if self.is_big_endian() {
+            i64::to_be(n)
+        } else {
+            i64::to_le(n)
+        }
+    }
+
+    /// Converts an unaligned unsigned 16 bit integer from native endian.
+    #[inline]
+    fn write_u16_bytes(self, n: u16) -> [u8; 2] {
+        if self.is_big_endian() {
+            u16::to_be_bytes(n)
+        } else {
+            u16::to_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned unsigned 32 bit integer from native endian.
+    #[inline]
+    fn write_u32_bytes(self, n: u32) -> [u8; 4] {
+        if self.is_big_endian() {
+            u32::to_be_bytes(n)
+        } else {
+            u32::to_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned unsigned 64 bit integer from native endian.
+    #[inline]
+    fn write_u64_bytes(self, n: u64) -> [u8; 8] {
+        if self.is_big_endian() {
+            u64::to_be_bytes(n)
+        } else {
+            u64::to_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned signed 16 bit integer from native endian.
+    #[inline]
+    fn write_i16_bytes(self, n: i16) -> [u8; 2] {
+        if self.is_big_endian() {
+            i16::to_be_bytes(n)
+        } else {
+            i16::to_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned signed 32 bit integer from native endian.
+    #[inline]
+    fn write_i32_bytes(self, n: i32) -> [u8; 4] {
+        if self.is_big_endian() {
+            i32::to_be_bytes(n)
+        } else {
+            i32::to_le_bytes(n)
+        }
+    }
+
+    /// Converts an unaligned signed 64 bit integer from native endian.
+    #[inline]
+    fn write_i64_bytes(self, n: i64) -> [u8; 8] {
+        if self.is_big_endian() {
+            i64::to_be_bytes(n)
+        } else {
+            i64::to_le_bytes(n)
+        }
+    }
+}
+
+/// An endianness that is selectable at run-time.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum Endianness {
+    /// Little endian byte order.
+    Little,
+    /// Big endian byte order.
+    Big,
+}
+
+impl Default for Endianness {
+    #[cfg(target_endian = "little")]
+    #[inline]
+    fn default() -> Endianness {
+        Endianness::Little
+    }
+
+    #[cfg(target_endian = "big")]
+    #[inline]
+    fn default() -> Endianness {
+        Endianness::Big
+    }
+}
+
+impl Endian for Endianness {
+    #[inline]
+    fn from_big_endian(big_endian: bool) -> Option<Self> {
+        Some(if big_endian {
+            Endianness::Big
+        } else {
+            Endianness::Little
+        })
+    }
+
+    #[inline]
+    fn is_big_endian(self) -> bool {
+        self != Endianness::Little
+    }
+}
+
+/// Compile-time little endian byte order.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub struct LittleEndian;
+
+impl Default for LittleEndian {
+    #[inline]
+    fn default() -> LittleEndian {
+        LittleEndian
+    }
+}
+
+impl Endian for LittleEndian {
+    #[inline]
+    fn from_big_endian(big_endian: bool) -> Option<Self> {
+        if big_endian {
+            None
+        } else {
+            Some(LittleEndian)
+        }
+    }
+
+    #[inline]
+    fn is_big_endian(self) -> bool {
+        false
+    }
+}
+
+/// Compile-time big endian byte order.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub struct BigEndian;
+
+impl Default for BigEndian {
+    #[inline]
+    fn default() -> BigEndian {
+        BigEndian
+    }
+}
+
+impl Endian for BigEndian {
+    #[inline]
+    fn from_big_endian(big_endian: bool) -> Option<Self> {
+        if big_endian {
+            Some(BigEndian)
+        } else {
+            None
+        }
+    }
+
+    #[inline]
+    fn is_big_endian(self) -> bool {
+        true
+    }
+}
+
+/// The native endianness for the target platform.
+#[cfg(target_endian = "little")]
+pub type NativeEndian = LittleEndian;
+
+#[cfg(target_endian = "little")]
+#[allow(non_upper_case_globals)]
+#[doc(hidden)]
+pub const NativeEndian: LittleEndian = LittleEndian;
+
+/// The native endianness for the target platform.
+#[cfg(target_endian = "big")]
+pub type NativeEndian = BigEndian;
+
+#[cfg(target_endian = "big")]
+#[allow(non_upper_case_globals)]
+#[doc(hidden)]
+pub const NativeEndian: BigEndian = BigEndian;
+
+macro_rules! unsafe_impl_endian_pod {
+    ($($struct_name:ident),+ $(,)?) => {
+        $(
+            unsafe impl<E: Endian> Pod for $struct_name<E> { }
+        )+
+    }
+}
+
+#[cfg(not(feature = "unaligned"))]
+mod aligned {
+    use super::{fmt, Endian, PhantomData, Pod};
+
+    /// A `u16` value with an externally specified endianness of type `E`.
+    #[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    #[repr(transparent)]
+    pub struct U16<E: Endian>(u16, PhantomData<E>);
+
+    impl<E: Endian> U16<E> {
+        /// Construct a new value given bytes that already have the required endianness.
+        pub fn from_bytes(n: [u8; 2]) -> Self {
+            Self(u16::from_ne_bytes(n), PhantomData)
+        }
+
+        /// Construct a new value given a native endian value.
+        pub fn new(e: E, n: u16) -> Self {
+            Self(e.write_u16(n), PhantomData)
+        }
+
+        /// Return the value as a native endian value.
+        pub fn get(self, e: E) -> u16 {
+            e.read_u16(self.0)
+        }
+
+        /// Set the value given a native endian value.
+        pub fn set(&mut self, e: E, n: u16) {
+            self.0 = e.write_u16(n);
+        }
+    }
+
+    /// A `u32` value with an externally specified endianness of type `E`.
+    #[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    #[repr(transparent)]
+    pub struct U32<E: Endian>(u32, PhantomData<E>);
+
+    impl<E: Endian> U32<E> {
+        /// Construct a new value given bytes that already have the required endianness.
+        pub fn from_bytes(n: [u8; 4]) -> Self {
+            Self(u32::from_ne_bytes(n), PhantomData)
+        }
+
+        /// Construct a new value given a native endian value.
+        pub fn new(e: E, n: u32) -> Self {
+            Self(e.write_u32(n), PhantomData)
+        }
+        /// Return the value as a native endian value.
+        pub fn get(self, e: E) -> u32 {
+            e.read_u32(self.0)
+        }
+        /// Set the value given a native endian value.
+        pub fn set(&mut self, e: E, n: u32) {
+            self.0 = e.write_u32(n);
+        }
+    }
+
+    /// A `u64` value with an externally specified endianness of type `E`.
+    #[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    #[repr(transparent)]
+    pub struct U64<E: Endian>(u64, PhantomData<E>);
+
+    impl<E: Endian> U64<E> {
+        /// Construct a new value given bytes that already have the required endianness.
+        pub fn from_bytes(n: [u8; 8]) -> Self {
+            Self(u64::from_ne_bytes(n), PhantomData)
+        }
+
+        /// Construct a new value given a native endian value.
+        pub fn new(e: E, n: u64) -> Self {
+            Self(e.write_u64(n), PhantomData)
+        }
+        /// Return the value as a native endian value.
+        pub fn get(self, e: E) -> u64 {
+            e.read_u64(self.0)
+        }
+        /// Set the value given a native endian value.
+        pub fn set(&mut self, e: E, n: u64) {
+            self.0 = e.write_u64(n);
+        }
+    }
+
+    /// An `i16` value with an externally specified endianness of type `E`.
+    #[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    #[repr(transparent)]
+    pub struct I16<E: Endian>(i16, PhantomData<E>);
+
+    impl<E: Endian> I16<E> {
+        /// Construct a new value given bytes that already have the required endianness.
+        pub fn from_bytes(n: [u8; 2]) -> Self {
+            Self(i16::from_ne_bytes(n), PhantomData)
+        }
+
+        /// Construct a new value given a native endian value.
+        pub fn new(e: E, n: i16) -> Self {
+            Self(e.write_i16(n), PhantomData)
+        }
+        /// Return the value as a native endian value.
+        pub fn get(self, e: E) -> i16 {
+            e.read_i16(self.0)
+        }
+        /// Set the value given a native endian value.
+        pub fn set(&mut self, e: E, n: i16) {
+            self.0 = e.write_i16(n);
+        }
+    }
+
+    /// An `i32` value with an externally specified endianness of type `E`.
+    #[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    #[repr(transparent)]
+    pub struct I32<E: Endian>(i32, PhantomData<E>);
+
+    impl<E: Endian> I32<E> {
+        /// Construct a new value given bytes that already have the required endianness.
+        pub fn from_bytes(n: [u8; 4]) -> Self {
+            Self(i32::from_ne_bytes(n), PhantomData)
+        }
+
+        /// Construct a new value given a native endian value.
+        pub fn new(e: E, n: i32) -> Self {
+            Self(e.write_i32(n), PhantomData)
+        }
+        /// Return the value as a native endian value.
+        pub fn get(self, e: E) -> i32 {
+            e.read_i32(self.0)
+        }
+        /// Set the value given a native endian value.
+        pub fn set(&mut self, e: E, n: i32) {
+            self.0 = e.write_i32(n);
+        }
+    }
+
+    /// An `i64` value with an externally specified endianness of type `E`.
+    #[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    #[repr(transparent)]
+    pub struct I64<E: Endian>(i64, PhantomData<E>);
+
+    impl<E: Endian> I64<E> {
+        /// Construct a new value given bytes that already have the required endianness.
+        pub fn from_bytes(n: [u8; 8]) -> Self {
+            Self(i64::from_ne_bytes(n), PhantomData)
+        }
+
+        /// Construct a new value given a native endian value.
+        pub fn new(e: E, n: i64) -> Self {
+            Self(e.write_i64(n), PhantomData)
+        }
+        /// Return the value as a native endian value.
+        pub fn get(self, e: E) -> i64 {
+            e.read_i64(self.0)
+        }
+        /// Set the value given a native endian value.
+        pub fn set(&mut self, e: E, n: i64) {
+            self.0 = e.write_i64(n);
+        }
+    }
+
+    impl<E: Endian> fmt::Debug for U16<E> {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            write!(f, "U16({:x})", self.0)
+        }
+    }
+
+    impl<E: Endian> fmt::Debug for U32<E> {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            write!(f, "U32({:x})", self.0)
+        }
+    }
+
+    impl<E: Endian> fmt::Debug for U64<E> {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            write!(f, "U64({:x})", self.0)
+        }
+    }
+
+    impl<E: Endian> fmt::Debug for I16<E> {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            write!(f, "I16({:x})", self.0)
+        }
+    }
+
+    impl<E: Endian> fmt::Debug for I32<E> {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            write!(f, "I32({:x})", self.0)
+        }
+    }
+
+    impl<E: Endian> fmt::Debug for I64<E> {
+        fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+            write!(f, "I64({:x})", self.0)
+        }
+    }
+
+    unsafe_impl_endian_pod!(U16, U32, U64, I16, I32, I64);
+}
+
+#[cfg(not(feature = "unaligned"))]
+pub use aligned::*;
+
+/// A `u16` value with an externally specified endianness of type `E`.
+#[cfg(feature = "unaligned")]
+pub type U16<E> = U16Bytes<E>;
+
+/// A `u32` value with an externally specified endianness of type `E`.
+#[cfg(feature = "unaligned")]
+pub type U32<E> = U32Bytes<E>;
+
+/// A `u64` value with an externally specified endianness of type `E`.
+#[cfg(feature = "unaligned")]
+pub type U64<E> = U64Bytes<E>;
+
+/// An `i16` value with an externally specified endianness of type `E`.
+#[cfg(feature = "unaligned")]
+pub type I16<E> = I16Bytes<E>;
+
+/// An `i32` value with an externally specified endianness of type `E`.
+#[cfg(feature = "unaligned")]
+pub type I32<E> = I32Bytes<E>;
+
+/// An `i64` value with an externally specified endianness of type `E`.
+#[cfg(feature = "unaligned")]
+pub type I64<E> = I64Bytes<E>;
+
+/// An unaligned `u16` value with an externally specified endianness of type `E`.
+#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[repr(transparent)]
+pub struct U16Bytes<E: Endian>([u8; 2], PhantomData<E>);
+
+impl<E: Endian> U16Bytes<E> {
+    /// Construct a new value given bytes that already have the required endianness.
+    pub fn from_bytes(n: [u8; 2]) -> Self {
+        Self(n, PhantomData)
+    }
+
+    /// Construct a new value given a native endian value.
+    pub fn new(e: E, n: u16) -> Self {
+        Self(e.write_u16_bytes(n), PhantomData)
+    }
+
+    /// Return the value as a native endian value.
+    pub fn get(self, e: E) -> u16 {
+        e.read_u16_bytes(self.0)
+    }
+
+    /// Set the value given a native endian value.
+    pub fn set(&mut self, e: E, n: u16) {
+        self.0 = e.write_u16_bytes(n);
+    }
+}
+
+/// An unaligned `u32` value with an externally specified endianness of type `E`.
+#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[repr(transparent)]
+pub struct U32Bytes<E: Endian>([u8; 4], PhantomData<E>);
+
+impl<E: Endian> U32Bytes<E> {
+    /// Construct a new value given bytes that already have the required endianness.
+    pub fn from_bytes(n: [u8; 4]) -> Self {
+        Self(n, PhantomData)
+    }
+
+    /// Construct a new value given a native endian value.
+    pub fn new(e: E, n: u32) -> Self {
+        Self(e.write_u32_bytes(n), PhantomData)
+    }
+
+    /// Return the value as a native endian value.
+    pub fn get(self, e: E) -> u32 {
+        e.read_u32_bytes(self.0)
+    }
+
+    /// Set the value given a native endian value.
+    pub fn set(&mut self, e: E, n: u32) {
+        self.0 = e.write_u32_bytes(n);
+    }
+}
+
+/// An unaligned `u64` value with an externally specified endianness of type `E`.
+#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[repr(transparent)]
+pub struct U64Bytes<E: Endian>([u8; 8], PhantomData<E>);
+
+impl<E: Endian> U64Bytes<E> {
+    /// Construct a new value given bytes that already have the required endianness.
+    pub fn from_bytes(n: [u8; 8]) -> Self {
+        Self(n, PhantomData)
+    }
+
+    /// Construct a new value given a native endian value.
+    pub fn new(e: E, n: u64) -> Self {
+        Self(e.write_u64_bytes(n), PhantomData)
+    }
+
+    /// Return the value as a native endian value.
+    pub fn get(self, e: E) -> u64 {
+        e.read_u64_bytes(self.0)
+    }
+
+    /// Set the value given a native endian value.
+    pub fn set(&mut self, e: E, n: u64) {
+        self.0 = e.write_u64_bytes(n);
+    }
+}
+
+/// An unaligned `i16` value with an externally specified endianness of type `E`.
+#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[repr(transparent)]
+pub struct I16Bytes<E: Endian>([u8; 2], PhantomData<E>);
+
+impl<E: Endian> I16Bytes<E> {
+    /// Construct a new value given bytes that already have the required endianness.
+    pub fn from_bytes(n: [u8; 2]) -> Self {
+        Self(n, PhantomData)
+    }
+
+    /// Construct a new value given a native endian value.
+    pub fn new(e: E, n: i16) -> Self {
+        Self(e.write_i16_bytes(n), PhantomData)
+    }
+
+    /// Return the value as a native endian value.
+    pub fn get(self, e: E) -> i16 {
+        e.read_i16_bytes(self.0)
+    }
+
+    /// Set the value given a native endian value.
+    pub fn set(&mut self, e: E, n: i16) {
+        self.0 = e.write_i16_bytes(n);
+    }
+}
+
+/// An unaligned `i32` value with an externally specified endianness of type `E`.
+#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[repr(transparent)]
+pub struct I32Bytes<E: Endian>([u8; 4], PhantomData<E>);
+
+impl<E: Endian> I32Bytes<E> {
+    /// Construct a new value given bytes that already have the required endianness.
+    pub fn from_bytes(n: [u8; 4]) -> Self {
+        Self(n, PhantomData)
+    }
+
+    /// Construct a new value given a native endian value.
+    pub fn new(e: E, n: i32) -> Self {
+        Self(e.write_i32_bytes(n), PhantomData)
+    }
+
+    /// Return the value as a native endian value.
+    pub fn get(self, e: E) -> i32 {
+        e.read_i32_bytes(self.0)
+    }
+
+    /// Set the value given a native endian value.
+    pub fn set(&mut self, e: E, n: i32) {
+        self.0 = e.write_i32_bytes(n);
+    }
+}
+
+/// An unaligned `i64` value with an externally specified endianness of type `E`.
+#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[repr(transparent)]
+pub struct I64Bytes<E: Endian>([u8; 8], PhantomData<E>);
+
+impl<E: Endian> I64Bytes<E> {
+    /// Construct a new value given bytes that already have the required endianness.
+    pub fn from_bytes(n: [u8; 8]) -> Self {
+        Self(n, PhantomData)
+    }
+
+    /// Construct a new value given a native endian value.
+    pub fn new(e: E, n: i64) -> Self {
+        Self(e.write_i64_bytes(n), PhantomData)
+    }
+
+    /// Return the value as a native endian value.
+    pub fn get(self, e: E) -> i64 {
+        e.read_i64_bytes(self.0)
+    }
+
+    /// Set the value given a native endian value.
+    pub fn set(&mut self, e: E, n: i64) {
+        self.0 = e.write_i64_bytes(n);
+    }
+}
+
+impl<E: Endian> fmt::Debug for U16Bytes<E> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "U16({:x}, {:x})", self.0[0], self.0[1],)
+    }
+}
+
+impl<E: Endian> fmt::Debug for U32Bytes<E> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "U32({:x}, {:x}, {:x}, {:x})",
+            self.0[0], self.0[1], self.0[2], self.0[3],
+        )
+    }
+}
+
+impl<E: Endian> fmt::Debug for U64Bytes<E> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "U64({:x}, {:x}, {:x}, {:x}, {:x}, {:x}, {:x}, {:x})",
+            self.0[0], self.0[1], self.0[2], self.0[3], self.0[4], self.0[5], self.0[6], self.0[7],
+        )
+    }
+}
+
+impl<E: Endian> fmt::Debug for I16Bytes<E> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "I16({:x}, {:x})", self.0[0], self.0[1],)
+    }
+}
+
+impl<E: Endian> fmt::Debug for I32Bytes<E> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "I32({:x}, {:x}, {:x}, {:x})",
+            self.0[0], self.0[1], self.0[2], self.0[3],
+        )
+    }
+}
+
+impl<E: Endian> fmt::Debug for I64Bytes<E> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "I64({:x}, {:x}, {:x}, {:x}, {:x}, {:x}, {:x}, {:x})",
+            self.0[0], self.0[1], self.0[2], self.0[3], self.0[4], self.0[5], self.0[6], self.0[7],
+        )
+    }
+}
+
+unsafe_impl_endian_pod!(U16Bytes, U32Bytes, U64Bytes, I16Bytes, I32Bytes, I64Bytes);