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Implement PUTSP trap #45

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merged 3 commits into from
Sep 29, 2024
Merged

Implement PUTSP trap #45

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a442eaa
Remove unnecessary string allocation for `PUTS`
dxrcy Sep 28, 2024
fb2d323
Implement `PUTSP` based on `PUTS`
dxrcy Sep 28, 2024
d25a64b
Remove duplication for `PUT` and `PUTS`
dxrcy Sep 29, 2024
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21 changes: 13 additions & 8 deletions src/runtime.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -281,18 +281,14 @@ impl RunState {
// puts
0x22 => {
// could probably rewrite with iterators but idk if worth
let mut addr = *self.reg(0);
let mut string = String::new();
loop {
for addr in *self.reg(0).. {
let chr_raw = *self.mem(addr);
let chr_ascii = (chr_raw & 0xFF) as u8 as char;
if chr_ascii == '\0' {
break;
}
string.push(chr_ascii);
addr += 1;
print!("{}", chr_ascii);
}
print!("{string}");
stdout().flush().unwrap();
}
// in
Expand All @@ -304,8 +300,17 @@ impl RunState {
}
// putsp
0x24 => {
// TODO: impl putsp
todo!("TODO: putsp can be put off until someone needs it")
'string: for addr in *self.reg(0).. {
let chr_raw = *self.mem(addr);
for chr in [chr_raw >> 8, chr_raw & 0xFF] {
let chr_ascii = chr as u8 as char;
if chr_ascii == '\0' {
break 'string;
}
print!("{}", chr_ascii);
}
}
stdout().flush().unwrap();
}
// halt
0x25 => {
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