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use jazz::opcodes::Instruction;
use crate::opcode::{Opcode,Size};
use crate::encode;
#[derive(Clone,Debug)]
pub struct Assembler {
pub instructions: Vec<Instruction>,
pub code: Vec<u8>,
}
impl Assembler {
pub fn new(code: Vec<Instruction>) -> Assembler {
Assembler {
instructions: code,
code: vec![]
}
}
pub fn translate(&mut self) {
let mut ip = 0;
while ip < self.instructions.len() {
let instruction = self.instructions[ip].clone();
match instruction {
Instruction::LoadInt(reg,val) => {
self.code.push(Opcode::LoadI);
self.code.push(reg as u8);
self.code.extend_from_slice(&encode!(val;i32));
}
Instruction::Move(reg,reg2) => {
self.code.push(Opcode::Move);
self.code.push(reg as u8);
self.code.push(reg2 as u8);
}
Instruction::LoadLong(reg,val) => {
self.code.push(Opcode::LoadL);
self.code.push(reg as u8);
self.code.extend_from_slice(&encode!(val;i64));
}
_ => unimplemented!(),
}
ip += 1;
}
self.code.push(self.instructions.len() as u8);
}
}