forked from AbleOS/holey-bytes
129 lines
4 KiB
Rust
129 lines
4 KiB
Rust
#![feature(alloc_error_handler)]
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#![feature(slice_take)]
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#![no_std]
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use {
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alloc::{string::String, vec::Vec},
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core::ffi::CStr,
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hblang::{
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backend::hbvm::HbvmBackend,
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son::{Codegen, CodegenCtx},
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ty::Module,
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Ent,
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},
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};
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extern crate alloc;
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const ARENA_CAP: usize = 128 * 16 * 1024;
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wasm_rt::decl_runtime!(ARENA_CAP, 1024 * 4);
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const MAX_INPUT_SIZE: usize = 32 * 4 * 1024;
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wasm_rt::decl_buffer!(MAX_INPUT_SIZE, MAX_INPUT, INPUT, INPUT_LEN);
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#[no_mangle]
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unsafe fn compile_and_run(mut fuel: usize) {
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ALLOCATOR.reset();
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_ = log::set_logger(&wasm_rt::Logger);
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log::set_max_level(log::LevelFilter::Error);
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struct File<'a> {
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path: &'a str,
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code: &'a mut str,
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}
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let mut root = 0;
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let files = {
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let mut input_bytes =
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core::slice::from_raw_parts_mut(core::ptr::addr_of_mut!(INPUT).cast::<u8>(), INPUT_LEN);
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let mut files = Vec::with_capacity(32);
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while let Some((&mut path_len, rest)) = input_bytes.split_first_chunk_mut() {
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let (path, rest) = rest.split_at_mut(u16::from_le_bytes(path_len) as usize);
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let (&mut code_len, rest) = rest.split_first_chunk_mut().unwrap();
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let (code, rest) = rest.split_at_mut(u16::from_le_bytes(code_len) as usize);
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files.push(File {
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path: core::str::from_utf8_unchecked(path),
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code: core::str::from_utf8_unchecked_mut(code),
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});
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input_bytes = rest;
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}
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let root_path = files[root].path;
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hblang::quad_sort(&mut files, |a, b| a.path.cmp(b.path));
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root = files.binary_search_by_key(&root_path, |p| p.path).unwrap();
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files
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};
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let mut ctx = CodegenCtx::default();
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let files = {
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let paths = files.iter().map(|f| f.path).collect::<Vec<_>>();
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let mut loader = |path: &str, _: &str, kind| match kind {
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hblang::parser::FileKind::Module => Ok(paths.binary_search(&path).unwrap()),
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hblang::parser::FileKind::Embed => Err("embeds are not supported".into()),
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};
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files
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.into_iter()
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.map(|f| {
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hblang::parser::Ast::new(
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f.path,
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// since 'free' does nothing this is fine
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String::from_raw_parts(f.code.as_mut_ptr(), f.code.len(), f.code.len()),
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&mut ctx.parser,
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&mut loader,
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)
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})
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.collect::<Vec<_>>()
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};
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let mut ct = {
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let mut backend = HbvmBackend::default();
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Codegen::new(&mut backend, &files, &mut ctx).generate(Module::new(root));
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if !ctx.parser.errors.borrow().is_empty() {
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log::error!("{}", ctx.parser.errors.borrow());
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return;
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}
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let mut c = Codegen::new(&mut backend, &files, &mut ctx);
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c.assemble_comptime()
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};
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while fuel != 0 {
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match ct.vm.run() {
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Ok(hbvm::VmRunOk::End) => {
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log::error!("exit code: {}", ct.vm.read_reg(1).0 as i64);
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break;
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}
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Ok(hbvm::VmRunOk::Ecall) => {
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let kind = ct.vm.read_reg(2).0;
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match kind {
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0 => {
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let str = ct.vm.read_reg(3).0;
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let str = unsafe { CStr::from_ptr(str as _) };
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log::error!("{}", str.to_str().unwrap());
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}
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unknown => log::error!("unknown ecall: {unknown}"),
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}
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}
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Ok(hbvm::VmRunOk::Timer) => {
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fuel -= 1;
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if fuel == 0 {
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log::error!("program timed out");
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}
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}
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Ok(hbvm::VmRunOk::Breakpoint) => todo!(),
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Err(e) => {
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log::error!("vm error: {e}");
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break;
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}
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}
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}
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//log::error!("memory consumption: {}b / {}b", ALLOCATOR.used(), ARENA_CAP);
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}
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