forked from AbleOS/ableos
print SYSCALL works
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@ -8,7 +8,7 @@ const ADD_FUNC_INDEX: usize = 0;
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const GET_TIME_INDEX: usize = 2;
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const GET_RANDOM_INDEX: usize = 3;
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const GET_INPUT_INDEX: usize = 4;
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const PRINT_CLEVER_HACK: usize = 5;
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const PRINT_CHAR: usize = 6;
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const SEND_SIGNAL_INDEX: usize = 1;
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pub struct HostExternals;
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@ -100,8 +100,8 @@ impl HostExternals {
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true
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}
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PRINT_CLEVER_HACK => {
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let (params, ret_ty): (&[ValueType], Option<ValueType>) = (&[ValueType::I64], None);
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PRINT_CHAR => {
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let (params, ret_ty): (&[ValueType], Option<ValueType>) = (&[ValueType::I32], None);
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if params.len() != signature.params().len() {
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return false;
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}
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@ -178,20 +178,12 @@ impl Externals for HostExternals {
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Ok(Some(ret))
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}
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PRINT_CLEVER_HACK => {
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// println!("SYSCALL: print clever hack");
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let combinated = args.nth_checked::<u64>(0).unwrap().to_le_bytes();
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for x in combinated.iter() {
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let chr = *x as char;
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print!("{}", chr);
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}
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println!("\n");
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PRINT_CHAR => {
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let chr: u8 = args.nth_checked(0)?;
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trace!("SYSCALL: print: {}", chr);
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print!("{}", char::from(chr));
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Ok(None)
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}
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_ => {
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error!("Unimplemented function at {}", index);
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Err(Trap::new(wasmi::TrapKind::Unreachable))
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@ -208,7 +200,7 @@ impl ModuleImportResolver for HostExternals {
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"get_time" => GET_TIME_INDEX,
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"get_random" => GET_RANDOM_INDEX,
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"get_input" => GET_INPUT_INDEX,
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"print_clever_hack" => PRINT_CLEVER_HACK,
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"print_char" => PRINT_CHAR,
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_ => {
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return Err(Error::Instantiation(format!(
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"Export {} not found",
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