cranelift_codegen_meta/
lib.rs

1//! This crate generates Rust sources for use by
2//! [`cranelift_codegen`](../cranelift_codegen/index.html).
3
4use cranelift_srcgen::{error, Formatter, Language};
5use shared::Definitions;
6
7#[macro_use]
8mod cdsl;
9
10pub mod isa;
11pub mod isle;
12
13mod gen_asm;
14mod gen_inst;
15mod gen_isle;
16mod gen_settings;
17mod gen_types;
18
19mod constant_hash;
20mod shared;
21mod unique_table;
22
23#[cfg(feature = "pulley")]
24mod pulley;
25
26/// Generate an ISA from an architecture string (e.g. "x86_64").
27pub fn isa_from_arch(arch: &str) -> Result<isa::Isa, String> {
28    isa::Isa::from_arch(arch).ok_or_else(|| format!("no supported isa found for arch `{arch}`"))
29}
30
31/// Generates all the Rust source files used in Cranelift from the meta-language.
32pub fn generate_rust(isas: &[isa::Isa], out_dir: &std::path::Path) -> Result<(), error::Error> {
33    let shared_defs = shared::define();
34    generate_rust_for_shared_defs(&shared_defs, isas, out_dir)
35}
36
37fn generate_rust_for_shared_defs(
38    shared_defs: &Definitions,
39    isas: &[isa::Isa],
40    out_dir: &std::path::Path,
41) -> Result<(), error::Error> {
42    gen_settings::generate(
43        &shared_defs.settings,
44        gen_settings::ParentGroup::None,
45        "settings.rs",
46        out_dir,
47    )?;
48
49    gen_types::generate("types.rs", out_dir)?;
50
51    gen_inst::generate(
52        &shared_defs.all_formats,
53        &shared_defs.all_instructions,
54        "opcodes.rs",
55        "inst_builder.rs",
56        out_dir,
57    )?;
58
59    // Per ISA definitions.
60    for isa in isa::define(isas) {
61        gen_settings::generate(
62            &isa.settings,
63            gen_settings::ParentGroup::Shared,
64            &format!("settings-{}.rs", isa.name),
65            out_dir,
66        )?;
67    }
68
69    #[cfg(feature = "pulley")]
70    if isas.contains(&isa::Isa::Pulley32) || isas.contains(&isa::Isa::Pulley64) {
71        pulley::generate_rust("pulley_inst_gen.rs", out_dir)?;
72    }
73
74    Ok(())
75}
76
77/// Generates all the ISLE source files used in Cranelift from the meta-language.
78pub fn generate_isle(isle_dir: &std::path::Path) -> Result<(), error::Error> {
79    let shared_defs = shared::define();
80    generate_isle_for_shared_defs(&shared_defs, isle_dir)
81}
82
83fn generate_isle_for_shared_defs(
84    shared_defs: &Definitions,
85    isle_dir: &std::path::Path,
86) -> Result<(), error::Error> {
87    gen_isle::generate(
88        &shared_defs.all_formats,
89        &shared_defs.all_instructions,
90        "clif_opt.isle",
91        "clif_lower.isle",
92        isle_dir,
93    )?;
94
95    #[cfg(feature = "pulley")]
96    pulley::generate_isle("pulley_gen.isle", isle_dir)?;
97
98    Ok(())
99}
100
101/// Generate the ISLE definitions; this provides ISLE glue to access the
102/// assembler instructions in [cranelift_assembler_x64_meta].
103fn generate_isle_for_assembler(
104    insts: &[cranelift_assembler_x64_meta::dsl::Inst],
105    isle_dir: &std::path::Path,
106) -> Result<(), error::Error> {
107    let mut fmt = Formatter::new(Language::Isle);
108    gen_asm::generate_isle(&mut fmt, insts);
109    fmt.write("assembler.isle", isle_dir)
110}
111
112/// Generate a macro containing builder functions for the assembler's ISLE
113/// constructors; this provides Rust implementations backing up the ISLE
114/// definitions in [generate_isle_for_assembler].
115fn generate_rust_macro_for_assembler(
116    insts: &[cranelift_assembler_x64_meta::dsl::Inst],
117    out_dir: &std::path::Path,
118) -> Result<(), error::Error> {
119    let mut fmt = Formatter::new(Language::Rust);
120    gen_asm::generate_rust_macro(&mut fmt, insts);
121    fmt.write("assembler-isle-macro.rs", out_dir)
122}
123
124/// Generates all the source files used in Cranelift from the meta-language.
125pub fn generate(
126    isas: &[isa::Isa],
127    out_dir: &std::path::Path,
128    isle_dir: &std::path::Path,
129) -> Result<(), error::Error> {
130    let shared_defs = shared::define();
131    generate_rust_for_shared_defs(&shared_defs, isas, out_dir)?;
132    generate_isle_for_shared_defs(&shared_defs, isle_dir)?;
133
134    let insts = cranelift_assembler_x64_meta::instructions::list();
135    generate_isle_for_assembler(&insts, isle_dir)?;
136    generate_rust_macro_for_assembler(&insts, out_dir)?;
137
138    Ok(())
139}
cranelift_codegen_meta/lib.rs

cranelift_codegen_meta/
lib.rs
