it's a start

5 files changed, 197 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..7983b37
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,32 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "autocfg"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+
+[[package]]
+name = "num-traits"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "yaxpeax-arch"
+version = "0.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d4d184a208255bb62f2d55c3875ee3fe459f2b8d9190b8427986b91d11ced7f"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "yaxpeax-ia64"
+version = "0.0.1"
+dependencies = [
+ "yaxpeax-arch",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..5d64136
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "yaxpeax-ia64"
+version = "0.0.1"
+authors = ["iximeow <me@iximeow.net>"]
+edition = "2018"
+license = "0BSD"
+repository = "http://git.iximeow.net/yaxpeax-ia64/"
+description = "ia64 decoder for the yaxpeax project"
+
+[dependencies]
+yaxpeax-arch = { version = "0.0.4", default-features = false, features = [] }
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..bfd0b37
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,129 @@
+use yaxpeax_arch::{Arch, AddressDiff, Decoder, LengthedInstruction, NoColors, YaxColors};
+
+use core::fmt;
+
+/// TODO: ia64 reference doc
+
+pub struct IA64;
+
+impl Arch for IA64 {
+    type Address = u64;
+    type Instruction = Instruction;
+    type DecodeError = DecodeError;
+    type Decoder = InstDecoder;
+    type Operand = Operand;
+}
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct Instruction {}
+impl yaxpeax_arch::LengthedInstruction for Instruction {
+    type Unit = yaxpeax_arch::AddressDiff<u64>;
+    fn len(&self) -> Self::Unit { AddressDiff::from_const(1) }
+    fn min_size() -> Self::Unit { AddressDiff::from_const(1) }
+}
+impl yaxpeax_arch::Instruction for Instruction {
+    fn well_defined(&self) -> bool {
+        true
+    }
+}
+impl Default for Instruction {
+    fn default() -> Self {
+        Instruction { }
+    }
+}
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum DecodeError {
+    ExhaustedInput,
+    BadOpcode,
+    BadOperand,
+    BadBundle,
+}
+impl fmt::Display for DecodeError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            DecodeError::ExhaustedInput => f.write_str("exhausted input"),
+            DecodeError::BadBundle => f.write_str("bad bundle"),
+            DecodeError::BadOpcode => f.write_str("bad opcode"),
+            DecodeError::BadOperand => f.write_str("bad operand"),
+        }
+    }
+}
+impl yaxpeax_arch::DecodeError for DecodeError {
+    fn data_exhausted(&self) -> bool {
+        if let DecodeError::ExhaustedInput = self {
+            true
+        } else {
+            false
+        }
+    }
+    fn bad_opcode(&self) -> bool {
+        if let DecodeError::BadBundle = self {
+            true
+        } else if let DecodeError::BadOpcode = self {
+            true
+        } else {
+            false
+        }
+    }
+    fn bad_operand(&self) -> bool {
+        if let DecodeError::BadOperand = self {
+            true
+        } else {
+            false
+        }
+    }
+}
+#[derive(Default)]
+pub struct InstDecoder {}
+#[derive(Debug)]
+pub enum Operand {}
+
+impl Decoder<Instruction> for InstDecoder {
+    type Error = DecodeError;
+
+    fn decode_into<T: IntoIterator<Item=u8>>(&self, inst: &mut Instruction, bytes: T) -> Result<(), Self::Error> {
+        let mut bytes_iter = bytes.into_iter();
+        let bundle = bytes_iter.next().ok_or(DecodeError::ExhaustedInput)?;
+        let bundle_tag = bundle & 0x1f;
+        let bundle_desc = match bundle_tag {
+            0x00 => { "M I I " },
+            0x01 => { "M I I|" },
+            0x02 => { "M I|I " },
+            0x03 => { "M I|I|" },
+            0x04 => { "M L X " },
+            0x05 => { "M L X|" },
+            0x06 => { return Err(DecodeError::BadBundle) },
+            0x07 => { return Err(DecodeError::BadBundle) },
+            0x08 => { "M M I " },
+            0x09 => { "M M I|" },
+            0x0a => { "M|M I " },
+            0x0b => { "M|M I|" },
+            0x0c => { "M F I " },
+            0x0d => { "M F I|" },
+            0x0e => { "M M F " },
+            0x0f => { "M M F|" },
+            0x10 => { "M I B " },
+            0x11 => { "M I B|" },
+            0x12 => { "M B B " },
+            0x13 => { "M B B|" },
+            0x14 => { return Err(DecodeError::BadBundle) },
+            0x15 => { return Err(DecodeError::BadBundle) },
+            0x16 => { "B B B " },
+            0x17 => { "B B B|" },
+            0x18 => { "M M B " },
+            0x19 => { "M M B|" },
+            0x1a => { return Err(DecodeError::BadBundle) },
+            0x1b => { return Err(DecodeError::BadBundle) },
+            0x1c => { "M F B " },
+            0x1d => { "M F B|" },
+            0x1e => { return Err(DecodeError::BadBundle) },
+            0x1f => { return Err(DecodeError::BadBundle) },
+            _ => { unreachable!(); }
+        };
+        eprintln!("bundle tag: {}", bundle_desc);
+
+        // from here, `itanium-architecture-vol-1-2-3-4-reference-set-manual.pdf` volume 3 is
+        // remaining necessary  details
+        Ok(())
+    }
+}
diff --git a/test/test.rs b/test/test.rs
new file mode 100644
index 0000000..128e601
--- /dev/null
+++ b/test/test.rs
@@ -0,0 +1,24 @@
+
+
+// from elf64-ia64-vms.c
+// 0x0b, 0x78, 0x00, 0x02, 0x00, 0x24, 0x00, 0x41, 0x3c, 0x70, 0x27, 0xc0, 0x01, 0x08, 0x00, 0x84
+// [MMI] addl r15=0,r1;;
+//       ld8.acq r16=[r15],8
+//       mov r14=r1;;
+// 0x11, 0x08, 0x00, 0x1e, 0x18, 0x10, 0x60, 0x80, 0x04, 0x80, 0x03, 0x00, 0x60, 0x00, 0x80, 0x00
+// [MIB] ld8 r1=[r15]
+//       mov b6=r16
+//       br.few b6;;
+// 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0
+// [MLX] nop.m 0
+//       brl.sptk.few tgt;;
+
+// from ia64 bash_4.2+dfsg-0.1+deb7u3_ia64:
+// 0410 1c00 8045 024c 8009 0060 f013 1a60
+// 0510 4118 0021 0000 0000 6020 0023 c86f
+// 0908 2144 1814 a000 4444 0820 0100 c000
+// 0100 0c50 2a04 1048 040a 40c0 0461 0084
+// 0158 80fb f027 0082 f5e5 4f60 04ed c79f
+// 0918 0016 1810 0002 8030 2080 04e9 b79f
+// 0818 0146 1810 4002 9030 2000 0000 0400
+// 1000 2806 9811 5002 2000 4200 50a5 ff58