aeb376227e
Add an isa::lookup() function which serves as a target registry for creating Box<TargetIsa> trait objects. An isa::Builder makes it possible to confugure the trait object before it is created.
38 lines
871 B
Rust
38 lines
871 B
Rust
//! RISC-V Instruction Set Architecture.
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pub mod settings;
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use super::super::settings as shared_settings;
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use super::Builder as IsaBuilder;
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use super::{TargetIsa, Encoding};
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use ir::dfg::DataFlowGraph;
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use ir::entities::Inst;
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#[allow(dead_code)]
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struct Isa {
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shared_flags: shared_settings::Flags,
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isa_flags: settings::Flags,
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}
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pub fn isa_builder() -> IsaBuilder {
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IsaBuilder {
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setup: settings::builder(),
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constructor: isa_constructor,
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}
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}
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fn isa_constructor(shared_flags: shared_settings::Flags,
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builder: shared_settings::Builder)
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-> Box<TargetIsa> {
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Box::new(Isa {
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shared_flags: shared_flags,
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isa_flags: settings::Flags::new(builder),
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})
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}
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impl TargetIsa for Isa {
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fn encode(&self, _: &DataFlowGraph, _: &Inst) -> Option<Encoding> {
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unimplemented!()
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}
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}
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