devraza/tinypc
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feat: progress towards BRP and BRZ

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This commit is contained in:
Muhammad Nauman Raza 2025-01-28 10:30:38 +00:00
parent 997c7a1367
commit 1a813edae1
Signed by: devraza
GPG key ID: 91EAD6081011574B
1 changed files with 27 additions and 18 deletions
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45
src/main.rs
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@ -15,7 +15,7 @@ fn process(
accumulator: &mut i64,
memory: &mut HashMap<String, i64>,
labels: &HashMap<String, usize>,
pc: &mut usize,
pc: usize,
) -> usize {
let ops: Vec<String> = line.split_whitespace().map(String::from).collect();
@ -59,9 +59,27 @@ fn process(
}
"BRA" => {
if ops.len() >= 3 {
*pc = *labels.get(&ops[2]).unwrap();
return *labels.get(&ops[2]).unwrap();
} else {
*pc = *labels.get(&ops[1]).unwrap();
return *labels.get(&ops[1]).unwrap();
}
}
"BRP" => {
if *accumulator >= 0 {
if ops.len() >= 3 {
return *labels.get(&ops[2]).unwrap();
} else {
return *labels.get(&ops[1]).unwrap();
}
}
}
"BRZ" => {
if *accumulator == 0 {
if ops.len() >= 3 {
return *labels.get(&ops[2]).unwrap();
} else {
return *labels.get(&ops[1]).unwrap();
}
}
}
"HLT" => std::process::exit(0),
@ -76,7 +94,7 @@ fn process(
}
}
0
return pc + 1;
}
fn main() -> io::Result<()> {
@ -94,28 +112,19 @@ fn main() -> io::Result<()> {
}
let ops: Vec<String> = line.split_whitespace().map(String::from).collect();
if ops.len() > 1 && ops[1] == "DAT" {
labels.insert(ops[0].clone(), index);
labels.insert(ops[0].clone(), ops[2].clone().parse::<usize>().unwrap());
println!("{:?}", labels);
} else if ops.len() > 1 {
labels.insert(ops[1].clone(), index);
println!("{:?}", labels);
}
code.push(line);
}
let mut pc: usize = 0;
let mut pc: usize = 1;
while pc < code.len() {
let line = &code[pc];
let next_pc = process(
line.to_string(),
&mut accumulator,
&mut memory,
&labels,
&mut pc,
);
if next_pc != 0 {
pc = next_pc;
} else {
pc += 1;
}
pc = process(line.to_string(), &mut accumulator, &mut memory, &labels, pc);
}
Ok(())