tishlang_cranelift_runtime/
lib.rs

1//! Runtime linked into the `tish build --native-backend cranelift` executable.
2//!
3//! **`tish_run_chunk`** deserializes embedded bytecode and runs **`tishlang_vm`** — the same
4//! execution engine as `tish run --backend vm`. The crate name is historical; this is not
5//! running CLIF-emitted machine code for each Tish opcode.
6
7use tishlang_bytecode::deserialize;
8use tishlang_vm::Vm;
9
10/// Serialization format:
11/// - u64: code len
12/// - bytes: code
13/// - u64: constants count
14/// - for each constant: u8 tag + payload
15/// - u64: names count
16/// - for each name: u64 len + bytes
17///
18/// Rust-callable wrapper. Run serialized chunk data. Returns exit code (0 on success).
19pub fn tish_run_chunk(ptr: *const u8, len: usize) -> i32 {
20    tish_run_chunk_impl(ptr, len)
21}
22
23#[no_mangle]
24extern "C" fn tish_run_chunk_impl(ptr: *const u8, len: usize) -> i32 {
25    if ptr.is_null() || len < 8 {
26        return 1;
27    }
28    let slice = unsafe { std::slice::from_raw_parts(ptr, len) };
29    match deserialize(slice) {
30        Ok(chunk) => {
31            let mut vm = Vm::new();
32            match vm.run(&chunk) {
33                Ok(_) => 0,
34                Err(e) => {
35                    eprintln!("Runtime error: {}", e);
36                    1
37                }
38            }
39        }
40        Err(e) => {
41            eprintln!("Deserialization error: {}", e);
42            1
43        }
44    }
45}
tishlang_cranelift_runtime/lib.rs

tishlang_cranelift_runtime/
lib.rs
