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genisa: remove matcher

This commit is contained in:
Richard Patel 2022-04-07 01:27:04 +02:00
parent 82970d166b
commit e8945a8e0d
1 changed files with 5 additions and 34 deletions
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39
genisa/src/main.rs
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@ -182,15 +182,6 @@ pub(crate) struct Mnemonic {
modifiers: Vec<String>, modifiers: Vec<String>,
args: Vec<String>, args: Vec<String>,
condition: String, condition: String,
#[serde(rename = "match")]
matcher: Vec<MatchField>,
}
#[derive(Deserialize, Default)]
#[serde(default)]
pub(crate) struct MatchField {
arg: String,
value: u32,
} }
#[derive(Deserialize, Default)] #[derive(Deserialize, Default)]
@ -431,34 +422,14 @@ impl Isa {
if let Some(mnemonics) = mnemonics_by_opcode.get(&opcode.name) { if let Some(mnemonics) = mnemonics_by_opcode.get(&opcode.name) {
let mut simplified_conditions = Vec::new(); let mut simplified_conditions = Vec::new();
for mnemonic in mnemonics { for mnemonic in mnemonics {
if mnemonic.matcher.is_empty() && mnemonic.condition.is_empty() { if mnemonic.condition.is_empty() {
continue; // TODO else branch continue; // TODO else branch
} }
// Emit if condition.
simplified_conditions.push(quote!(if)); simplified_conditions.push(quote!(if));
for (i, condition) in mnemonic.matcher.iter().enumerate() { simplified_conditions.push(compile_mnemonic_condition(
if i > 0 { &field_by_name,
simplified_conditions.push(quote!(&&)); &mnemonic.condition,
} )?);
// Express value from opcode.
let field: &Field = field_by_name.get(&condition.arg).ok_or_else(|| {
Error::from(format!("undefined field {}", &condition.arg))
})?;
simplified_conditions.push(field.express_value_self());
// Equate with literal.
let lit_int =
LitInt::new(&format!("{}", condition.value), Span::call_site());
simplified_conditions.push(quote!(== #lit_int));
}
if !mnemonic.condition.is_empty() {
if mnemonic.matcher.len() > 0 {
simplified_conditions.push(quote!(&&));
}
simplified_conditions.push(compile_mnemonic_condition(
&field_by_name,
&mnemonic.condition,
)?);
}
// Emit branch. // Emit branch.
let mnemonic_lit = LitStr::new(&mnemonic.name, Span::call_site()); let mnemonic_lit = LitStr::new(&mnemonic.name, Span::call_site());
// Extract modifier bits. // Extract modifier bits.