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-rw-r--r--vendor/object-0.26.2/src/read/macho/fat.rs120
1 files changed, 120 insertions, 0 deletions
diff --git a/vendor/object-0.26.2/src/read/macho/fat.rs b/vendor/object-0.26.2/src/read/macho/fat.rs
new file mode 100644
index 000000000..6fc649f31
--- /dev/null
+++ b/vendor/object-0.26.2/src/read/macho/fat.rs
@@ -0,0 +1,120 @@
+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 `FatArch32` and `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,
+ _ => 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)
+ }
+}