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-rw-r--r--third_party/rust/object/src/read/elf/compression.rs56
1 files changed, 56 insertions, 0 deletions
diff --git a/third_party/rust/object/src/read/elf/compression.rs b/third_party/rust/object/src/read/elf/compression.rs
new file mode 100644
index 0000000000..7242dd39c8
--- /dev/null
+++ b/third_party/rust/object/src/read/elf/compression.rs
@@ -0,0 +1,56 @@
+use core::fmt::Debug;
+
+use crate::elf;
+use crate::endian;
+use crate::pod::Pod;
+
+/// A trait for generic access to `CompressionHeader32` and `CompressionHeader64`.
+#[allow(missing_docs)]
+pub trait CompressionHeader: Debug + Pod {
+ type Word: Into<u64>;
+ type Endian: endian::Endian;
+
+ fn ch_type(&self, endian: Self::Endian) -> u32;
+ fn ch_size(&self, endian: Self::Endian) -> Self::Word;
+ fn ch_addralign(&self, endian: Self::Endian) -> Self::Word;
+}
+
+impl<Endian: endian::Endian> CompressionHeader for elf::CompressionHeader32<Endian> {
+ type Word = u32;
+ type Endian = Endian;
+
+ #[inline]
+ fn ch_type(&self, endian: Self::Endian) -> u32 {
+ self.ch_type.get(endian)
+ }
+
+ #[inline]
+ fn ch_size(&self, endian: Self::Endian) -> Self::Word {
+ self.ch_size.get(endian)
+ }
+
+ #[inline]
+ fn ch_addralign(&self, endian: Self::Endian) -> Self::Word {
+ self.ch_addralign.get(endian)
+ }
+}
+
+impl<Endian: endian::Endian> CompressionHeader for elf::CompressionHeader64<Endian> {
+ type Word = u64;
+ type Endian = Endian;
+
+ #[inline]
+ fn ch_type(&self, endian: Self::Endian) -> u32 {
+ self.ch_type.get(endian)
+ }
+
+ #[inline]
+ fn ch_size(&self, endian: Self::Endian) -> Self::Word {
+ self.ch_size.get(endian)
+ }
+
+ #[inline]
+ fn ch_addralign(&self, endian: Self::Endian) -> Self::Word {
+ self.ch_addralign.get(endian)
+ }
+}