84 lines
2.4 KiB
Rust
84 lines
2.4 KiB
Rust
use crate::frontend::{CallArgument, Callable, Type};
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use crate::rtlil;
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use crate::rtlil::SigSpec;
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fn instantiate_unop(celltype: &str, id: &str, args: &[SigSpec], ret: &SigSpec) -> rtlil::Cell {
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let a = args
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.get(0)
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.expect("wrong argcount slipped through type check");
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assert_eq!(args.len(), 1);
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let mut cell = rtlil::Cell::new(id, celltype);
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cell.add_param("\\A_SIGNED", "0");
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cell.add_param("\\A_WIDTH", "1");
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cell.add_param("\\Y_WIDTH", "1");
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cell.add_connection("\\A", a);
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cell.add_connection("\\Y", ret);
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cell
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}
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fn instantiate_binop(celltype: &str, id: &str, args: &[SigSpec], ret: &SigSpec) -> rtlil::Cell {
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let a = args
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.get(0)
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.expect("wrong argcount slipped through type check");
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let b = args
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.get(1)
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.expect("wrong argcount slipped through type check");
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assert_eq!(args.len(), 2);
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let mut cell = rtlil::Cell::new(id, celltype);
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cell.add_param("\\A_SIGNED", "0");
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cell.add_param("\\A_WIDTH", "1");
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cell.add_param("\\B_SIGNED", "0");
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cell.add_param("\\B_WIDTH", "1");
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cell.add_param("\\Y_WIDTH", "1");
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cell.add_connection("\\A", a);
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cell.add_connection("\\B", b);
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cell.add_connection("\\Y", ret);
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cell
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}
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fn make_binop_callable(name: &str, celltype: &'static str) -> Callable {
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let args = vec![
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CallArgument {
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name: "A".to_owned(),
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atype: Type::wire(),
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},
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CallArgument {
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name: "B".to_owned(),
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atype: Type::wire(),
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},
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];
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Callable {
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name: name.to_owned(),
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args,
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ret: Type::wire(),
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instantiate: Box::new(move |id, args, ret| instantiate_binop(celltype, id, args, ret)),
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}
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}
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fn make_unnop_callable(name: &str, celltype: &'static str) -> Callable {
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let args = vec![
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CallArgument {
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name: "A".to_owned(),
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atype: Type::wire(),
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},
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];
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Callable {
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name: name.to_owned(),
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args,
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ret: Type::wire(),
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instantiate: Box::new(move |id, args, ret| instantiate_unop(celltype, id, args, ret)),
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}
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}
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pub fn get_builtins() -> Vec<Callable> {
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vec![
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make_binop_callable("and", "$and"),
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make_binop_callable("or", "$or"),
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make_binop_callable("xor", "$xor"),
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make_binop_callable("xnor", "$xnor"),
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make_unnop_callable("not", "$not"),
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]
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}
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