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-rw-r--r--src/lib.rs66
-rw-r--r--test/test.rs18
2 files changed, 43 insertions, 41 deletions
diff --git a/src/lib.rs b/src/lib.rs
index e312bd7..faca813 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -8,7 +8,7 @@ extern crate serde;
extern crate yaxpeax_arch;
extern crate termion;
-use yaxpeax_arch::{Arch, Decodable, LengthedInstruction};
+use yaxpeax_arch::{Arch, Decoder, LengthedInstruction};
mod display;
@@ -23,6 +23,7 @@ pub struct MSP430;
impl Arch for MSP430 {
type Address = u16;
type Instruction = Instruction;
+ type Decoder = InstDecoder;
type Operand = Operand;
}
@@ -124,15 +125,18 @@ pub enum Operand {
Nothing
}
-impl Decodable for Instruction {
- fn decode<T: IntoIterator<Item=u8>>(bytes: T) -> Option<Self> {
- let mut instr = Instruction::blank();
- match instr.decode_into(bytes) {
- Some(_) => Some(instr),
+#[derive(Default, Debug)]
+pub struct InstDecoder {}
+
+impl Decoder<Instruction> for InstDecoder {
+ fn decode<T: IntoIterator<Item=u8>>(&self, bytes: T) -> Option<Instruction> {
+ let mut inst = Instruction::blank();
+ match self.decode_into(&mut inst, bytes) {
+ Some(_) => Some(inst),
None => None
}
}
- fn decode_into<T: IntoIterator<Item=u8>>(&mut self, bytes: T) -> Option<()> {
+ fn decode_into<T: IntoIterator<Item=u8>>(&self, inst: &mut Instruction, bytes: T) -> Option<()> {
let mut bytes_iter = bytes.into_iter();
let word: Vec<u8> = bytes_iter.by_ref().take(2).collect();
@@ -212,15 +216,15 @@ impl Decodable for Instruction {
return true;
}
- self.op_width = Width::W;
+ inst.op_width = Width::W;
match fullword {
/*
instrword if instrword < 0x1000 => {
// MSP430X instructions go here
- self.opcode = Opcode::Invalid(instrword);
- self.operands[0] = Operand::Nothing;
- self.operands[1] = Operand::Nothing;
+ inst.opcode = Opcode::Invalid(instrword);
+ inst.operands[0] = Operand::Nothing;
+ inst.operands[1] = Operand::Nothing;
return None;
}, */
instrword if instrword < 0x2000 => {
@@ -228,7 +232,7 @@ impl Decodable for Instruction {
let (opcode_idx, operands) = ((instrword & 0x0380) >> 7, instrword & 0x7f);
match opcode_idx {
x if x < 6 => {
- self.opcode = [
+ inst.opcode = [
Opcode::RRC,
Opcode::SWPB,
Opcode::RRA,
@@ -236,11 +240,11 @@ impl Decodable for Instruction {
Opcode::PUSH,
Opcode::CALL
][x as usize];
- self.op_width = if operands & 0b01000000 == 0 {
+ inst.op_width = if operands & 0b01000000 == 0 {
Width::W
} else {
if x == 1 || x == 3 || x == 5 {
- self.opcode = Opcode::Invalid(instrword);
+ inst.opcode = Opcode::Invalid(instrword);
return None;
}
Width:: B
@@ -250,26 +254,26 @@ impl Decodable for Instruction {
((instrword & 0x0030) >> 4) as u8,
(instrword & 0x000f) as u8
);
- if !decode_operand(&mut bytes_iter, source, As, &mut self.operands[0]) {
- self.opcode = Opcode::Invalid(instrword);
+ if !decode_operand(&mut bytes_iter, source, As, &mut inst.operands[0]) {
+ inst.opcode = Opcode::Invalid(instrword);
return None;
};
- self.operands[1] = Operand::Nothing;
+ inst.operands[1] = Operand::Nothing;
Some(())
},
6 => {
if operands == 0 {
- self.opcode = Opcode::RETI;
- self.operands[0] = Operand::Nothing;
- self.operands[1] = Operand::Nothing;
+ inst.opcode = Opcode::RETI;
+ inst.operands[0] = Operand::Nothing;
+ inst.operands[1] = Operand::Nothing;
Some(())
} else {
- self.opcode = Opcode::Invalid(instrword);
+ inst.opcode = Opcode::Invalid(instrword);
return None;
}
}
7 => {
- self.opcode = Opcode::Invalid(instrword);
+ inst.opcode = Opcode::Invalid(instrword);
return None;
}
_ => {
@@ -279,7 +283,7 @@ impl Decodable for Instruction {
},
instrword if instrword < 0x4000 => {
let (opcode_idx, offset) = ((instrword & 0x1c00) >> 10, instrword & 0x3ff);
- self.opcode = [
+ inst.opcode = [
Opcode::JNE,
Opcode::JEQ,
Opcode::JNC,
@@ -289,13 +293,13 @@ impl Decodable for Instruction {
Opcode::JL,
Opcode::JMP
][opcode_idx as usize];
- self.operands[0] = Operand::Offset(((offset as i16) << 6) >> 6);
- self.operands[1] = Operand::Nothing;
+ inst.operands[0] = Operand::Offset(((offset as i16) << 6) >> 6);
+ inst.operands[1] = Operand::Nothing;
Some(())
},
instrword @ _ => {
let (opcode_idx, operands) = ((instrword & 0xf000) >> 12, instrword & 0x0fff);
- self.opcode = [
+ inst.opcode = [
Opcode::MOV,
Opcode::ADD,
Opcode::ADDC,
@@ -309,7 +313,7 @@ impl Decodable for Instruction {
Opcode::XOR,
Opcode::AND
][(opcode_idx - 4) as usize];
- self.op_width = if operands & 0b01000000 == 0 { Width::W } else { Width:: B };
+ inst.op_width = if operands & 0b01000000 == 0 { Width::W } else { Width:: B };
#[allow(non_snake_case)]
let (source, Ad, As, dest) = (
((instrword & 0x0f00) >> 8) as u8,
@@ -317,12 +321,12 @@ impl Decodable for Instruction {
((instrword & 0x0030) >> 4) as u8,
(instrword & 0x000f) as u8
);
- if !decode_operand(&mut bytes_iter, source, As, &mut self.operands[0]) {
- self.opcode = Opcode::Invalid(instrword);
+ if !decode_operand(&mut bytes_iter, source, As, &mut inst.operands[0]) {
+ inst.opcode = Opcode::Invalid(instrword);
return None;
}
- if !decode_operand(&mut bytes_iter, dest, Ad, &mut self.operands[1]) {
- self.opcode = Opcode::Invalid(instrword);
+ if !decode_operand(&mut bytes_iter, dest, Ad, &mut inst.operands[1]) {
+ inst.opcode = Opcode::Invalid(instrword);
return None;
}
Some(())
diff --git a/test/test.rs b/test/test.rs
index 48cf90b..5a59df4 100644
--- a/test/test.rs
+++ b/test/test.rs
@@ -1,28 +1,26 @@
extern crate yaxpeax_arch;
extern crate yaxpeax_msp430_mc;
-use yaxpeax_arch::Decodable;
-use yaxpeax_msp430_mc::{Instruction, Opcode};
+use yaxpeax_arch::{Arch, Decoder};
+use yaxpeax_msp430_mc::{Opcode, MSP430};
#[test]
fn test_decode() {
+ let decoder = <MSP430 as Arch>::Decoder::default();
+
let data = [0x02, 0x12];
- let mut instr = Instruction::blank();
- instr.decode_into(data.iter().map(|x| *x));
+ let instr = decoder.decode(data.iter().cloned()).unwrap();
assert!(instr.opcode == Opcode::PUSH);
let data = [0xb1, 0x92, 0x8d, 0x49];
- let mut instr = Instruction::blank();
- instr.decode_into(data.iter().map(|x| *x));
+ let instr = decoder.decode(data.iter().cloned()).unwrap();
assert!(instr.opcode == Opcode::CMP);
let data = [0x12, 0x00, 0x3f, 0x40];
- let mut instr = Instruction::blank();
- instr.decode_into(data.iter().map(|x| *x));
+ let instr = decoder.decode(data.iter().cloned()).unwrap();
assert!(instr.opcode == Opcode::RRC);
let data = [0x20, 0x0e];
- let mut instr = Instruction::blank();
- instr.decode_into(data.iter().map(|x| *x));
+ let instr = decoder.decode(data.iter().cloned()).unwrap();
assert!(instr.opcode == Opcode::PUSH);
}
generated by cgit v1.1 at 2024-11-21 19:22:43 +0000