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-rw-r--r--src/lib.rs39
1 files changed, 32 insertions, 7 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 94ec425..acbe126 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,7 +5,7 @@
//! [`itanium-architecture-vol-1-2-3-4-reference-set-manual.pdf`](https://www.intel.com/content/dam/doc/manual/itanium-architecture-vol-1-2-3-4-reference-set-manual.pdf)
//! as of 2019-09-07. `sha256: 705d2fc04ab378568eddb6bac4ee6974b6224b8efb5f73606f964f4a86e22955`
-use yaxpeax_arch::{Arch, AddressDiff, Decoder, LengthedInstruction};
+use yaxpeax_arch::{Arch, AddressDiff, Decoder, LengthedInstruction, Reader, ReadError};
use yaxpeax_arch::AddressBase;
use bitvec::prelude::*;
@@ -16,6 +16,7 @@ use core::fmt;
pub struct IA64;
impl Arch for IA64 {
+ type Word = IA64InstWord;
type Address = u64;
type Instruction = InstructionBundle;
type DecodeError = DecodeError;
@@ -1685,14 +1686,38 @@ const BUNDLE_TAGS: [Option<BundleDesc>; 32] = [
None,
None,
];
-impl Decoder<InstructionBundle> for InstDecoder {
+
+impl From<ReadError> for DecodeError {
+ fn from(read_err: ReadError) -> DecodeError {
+ match read_err {
+ ReadError::ExhaustedInput => DecodeError::ExhaustedInput,
+ ReadError::IOError(_) => DecodeError::ExhaustedInput,
+ }
+ }
+}
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct IA64InstWord([u8; 16]);
+impl IA64InstWord {
+ fn bytes(&self) -> &[u8; 16] {
+ &self.0
+ }
+}
+
+impl fmt::Display for IA64InstWord {
+ fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+ write!(fmt, "{:02x?}", self.0)
+ }
+}
+
+impl Decoder<IA64> for InstDecoder {
type Error = DecodeError;
- fn decode_into<T: IntoIterator<Item=u8>>(&self, inst: &mut InstructionBundle, bytes: T) -> Result<(), Self::Error> {
- let mut bytes_iter = bytes.into_iter();
+ fn decode_into<T: Reader<<IA64 as Arch>::Word>>(&self, inst: &mut InstructionBundle, bytes: &mut T) -> Result<(), Self::Error> {
+ let word = bytes.next()?;
let mut instruction_bytes = bitarr![Lsb0, u8; 0u8; 128];
for i in 0..0u64.wrapping_offset(InstructionBundle::min_size()).to_linear() {
- instruction_bytes[(i * 8)..(i * 8 + 8)].store(bytes_iter.next().ok_or(DecodeError::ExhaustedInput)?);
+ instruction_bytes[(i * 8)..(i * 8 + 8)].store(word.bytes()[i]);
}
// let instruction_bits = instruction_bytes.view_bits::<Lsb0>();
let bundle_tag = instruction_bytes[0..5].load::<u8>();
@@ -1955,9 +1980,9 @@ impl Decoder<InstructionBundle> for InstDecoder {
// remaining necessary details
Ok(())
}
- fn decode<T: IntoIterator<Item=u8>>(&self, bytes: T) -> Result<InstructionBundle, Self::Error> {
+ fn decode<T: Reader<<IA64 as Arch>::Word>>(&self, words: &mut T) -> Result<InstructionBundle, Self::Error> {
let mut inst = InstructionBundle::default();
- self.decode_into(&mut inst, bytes)?;
+ self.decode_into(&mut inst, words)?;
Ok(inst)
}
}