forked from AbleOS/holey-bytes
1994 lines
60 KiB
Rust
1994 lines
60 KiB
Rust
#![feature(
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assert_matches,
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let_chains,
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if_let_guard,
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macro_metavar_expr,
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anonymous_lifetime_in_impl_trait,
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core_intrinsics,
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never_type,
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unwrap_infallible,
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slice_partition_dedup,
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portable_simd,
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iter_collect_into,
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new_uninit,
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ptr_metadata,
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slice_ptr_get,
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slice_take,
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map_try_insert,
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extract_if,
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ptr_internals,
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iter_intersperse,
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str_from_raw_parts,
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ptr_sub_ptr,
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slice_from_ptr_range,
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is_sorted,
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iter_next_chunk
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)]
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#![feature(pointer_is_aligned_to)]
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#![warn(clippy::dbg_macro)]
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#![allow(stable_features, internal_features)]
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#![no_std]
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#[cfg(feature = "std")]
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pub use fs::*;
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use {
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self::{
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ident::Ident,
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lexer::TokenKind,
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parser::{idfl, CommentOr, Expr, ExprRef, FileId, Pos},
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ty::ArrayLen,
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},
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alloc::{boxed::Box, collections::BTreeMap, string::String, vec::Vec},
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core::{cell::Cell, fmt::Display, ops::Range},
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hashbrown::hash_map,
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hbbytecode as instrs,
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};
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#[macro_use]
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extern crate alloc;
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#[cfg(any(feature = "std", test))]
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extern crate std;
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#[cfg(test)]
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const README: &str = include_str!("../README.md");
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#[macro_export]
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macro_rules! run_tests {
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($runner:path: $($name:ident;)*) => {$(
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#[test]
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fn $name() {
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$crate::run_test(core::any::type_name_of_val(&$name), stringify!($name), $crate::README, $runner);
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}
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)*};
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}
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pub mod codegen;
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pub mod fmt;
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#[cfg(any(feature = "std", test))]
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pub mod fs;
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pub mod parser;
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#[cfg(feature = "opts")]
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pub mod son;
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pub mod lexer;
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#[cfg(feature = "opts")]
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mod vc;
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mod debug {
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pub fn panicking() -> bool {
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#[cfg(feature = "std")]
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{
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std::thread::panicking()
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}
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#[cfg(not(feature = "std"))]
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{
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false
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}
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}
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#[cfg(all(debug_assertions, feature = "std"))]
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pub type Trace = std::rc::Rc<std::backtrace::Backtrace>;
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#[cfg(not(all(debug_assertions, feature = "std")))]
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pub type Trace = ();
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pub fn trace() -> Trace {
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#[cfg(all(debug_assertions, feature = "std"))]
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{
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std::rc::Rc::new(std::backtrace::Backtrace::capture())
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}
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#[cfg(not(all(debug_assertions, feature = "std")))]
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{}
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}
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}
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pub mod reg {
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pub const STACK_PTR: Reg = 254;
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pub const ZERO: Reg = 0;
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pub const RET: Reg = 1;
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pub const RET_ADDR: Reg = 31;
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pub type Reg = u8;
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}
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mod ctx_map {
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use core::hash::BuildHasher;
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pub type Hash = u64;
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pub type HashBuilder = core::hash::BuildHasherDefault<IdentityHasher>;
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#[derive(Default)]
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pub struct IdentityHasher(u64);
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impl core::hash::Hasher for IdentityHasher {
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fn finish(&self) -> u64 {
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self.0
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}
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fn write(&mut self, _: &[u8]) {
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unimplemented!()
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}
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fn write_u64(&mut self, i: u64) {
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self.0 = i;
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}
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}
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#[derive(Clone)]
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pub struct Key<T> {
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pub value: T,
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pub hash: Hash,
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}
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impl<T> core::hash::Hash for Key<T> {
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fn hash<H: core::hash::Hasher>(&self, state: &mut H) {
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state.write_u64(self.hash);
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}
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}
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pub trait CtxEntry {
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type Ctx: ?Sized;
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type Key<'a>: Eq + core::hash::Hash;
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fn key<'a>(&self, ctx: &'a Self::Ctx) -> Self::Key<'a>;
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}
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#[derive(Clone)]
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pub struct CtxMap<T> {
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inner: hashbrown::HashMap<Key<T>, (), HashBuilder>,
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}
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impl<T> Default for CtxMap<T> {
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fn default() -> Self {
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Self { inner: Default::default() }
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}
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}
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impl<T: CtxEntry> CtxMap<T> {
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pub fn entry<'a, 'b>(
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&'a mut self,
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key: T::Key<'b>,
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ctx: &'b T::Ctx,
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) -> (hashbrown::hash_map::RawEntryMut<'a, Key<T>, (), HashBuilder>, Hash) {
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let hash = crate::FnvBuildHasher::default().hash_one(&key);
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(self.inner.raw_entry_mut().from_hash(hash, |k| k.value.key(ctx) == key), hash)
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}
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pub fn get<'a>(&self, key: T::Key<'a>, ctx: &'a T::Ctx) -> Option<&T> {
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let hash = crate::FnvBuildHasher::default().hash_one(&key);
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self.inner
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.raw_entry()
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.from_hash(hash, |k| k.value.key(ctx) == key)
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.map(|(k, _)| &k.value)
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}
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#[cfg_attr(not(feature = "opts"), expect(dead_code))]
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pub fn clear(&mut self) {
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self.inner.clear();
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}
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#[cfg_attr(not(feature = "opts"), expect(dead_code))]
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pub fn remove(&mut self, value: &T, ctx: &T::Ctx) -> Option<T> {
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let (entry, _) = self.entry(value.key(ctx), ctx);
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match entry {
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hashbrown::hash_map::RawEntryMut::Occupied(o) => Some(o.remove_entry().0.value),
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hashbrown::hash_map::RawEntryMut::Vacant(_) => None,
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}
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}
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pub fn insert<'a>(&mut self, key: T::Key<'a>, value: T, ctx: &'a T::Ctx) {
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let (entry, hash) = self.entry(key, ctx);
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match entry {
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hashbrown::hash_map::RawEntryMut::Occupied(_) => unreachable!(),
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hashbrown::hash_map::RawEntryMut::Vacant(v) => {
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_ = v.insert(Key { hash, value }, ())
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}
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}
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}
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pub fn get_or_insert<'a>(
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&mut self,
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key: T::Key<'a>,
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ctx: &'a mut T::Ctx,
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with: impl FnOnce(&'a mut T::Ctx) -> T,
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) -> &mut T {
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let (entry, hash) = self.entry(key, unsafe { &mut *(&mut *ctx as *mut _) });
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match entry {
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hashbrown::hash_map::RawEntryMut::Occupied(o) => &mut o.into_key_value().0.value,
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hashbrown::hash_map::RawEntryMut::Vacant(v) => {
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&mut v.insert(Key { hash, value: with(ctx) }, ()).0.value
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}
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}
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}
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}
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}
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mod task {
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use super::Offset;
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pub fn unpack(offset: Offset) -> Result<Offset, usize> {
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if offset >> 31 != 0 {
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Err((offset & !(1 << 31)) as usize)
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} else {
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Ok(offset)
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}
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}
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pub fn is_done(offset: Offset) -> bool {
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unpack(offset).is_ok()
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}
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#[cfg_attr(not(feature = "opts"), expect(dead_code))]
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pub fn id(index: usize) -> Offset {
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1 << 31 | index as u32
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}
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}
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mod ident {
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pub type Ident = u32;
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const LEN_BITS: u32 = 6;
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pub fn len(ident: u32) -> u32 {
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ident & ((1 << LEN_BITS) - 1)
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}
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pub fn is_null(ident: u32) -> bool {
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(ident >> LEN_BITS) == 0
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}
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pub fn pos(ident: u32) -> u32 {
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(ident >> LEN_BITS).saturating_sub(1)
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}
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pub fn new(pos: u32, len: u32) -> Option<u32> {
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(len < (1 << LEN_BITS)).then_some(((pos + 1) << LEN_BITS) | len)
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}
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pub fn range(ident: u32) -> core::ops::Range<usize> {
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let (len, pos) = (len(ident) as usize, pos(ident) as usize);
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pos..pos + len
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}
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}
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mod ty {
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use {
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crate::{
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ident,
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lexer::TokenKind,
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parser::{self, Pos},
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Size, Types,
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},
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core::{num::NonZeroU32, ops::Range},
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};
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pub type ArrayLen = u32;
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pub type Builtin = u32;
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pub type Struct = u32;
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pub type Ptr = u32;
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pub type Func = u32;
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pub type Global = u32;
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pub type Module = u32;
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pub type Slice = u32;
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pub const ECA: Func = Func::MAX;
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#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, Default, PartialOrd, Ord)]
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pub struct Tuple(pub u32);
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impl Tuple {
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const LEN_BITS: u32 = 5;
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const LEN_MASK: usize = Self::MAX_LEN - 1;
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const MAX_LEN: usize = 1 << Self::LEN_BITS;
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pub fn new(pos: usize, len: usize) -> Option<Self> {
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if len >= Self::MAX_LEN {
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return None;
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}
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Some(Self((pos << Self::LEN_BITS | len) as u32))
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}
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pub fn range(self) -> Range<usize> {
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let start = self.0 as usize >> Self::LEN_BITS;
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start..start + self.len()
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}
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pub fn len(self) -> usize {
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self.0 as usize & Self::LEN_MASK
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}
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pub fn empty() -> Self {
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Self(0)
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}
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pub fn args(self) -> ArgIter {
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ArgIter(self.range())
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}
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}
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pub struct ArgIter(Range<usize>);
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pub enum Arg {
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Type(Id),
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Value(Id),
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}
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impl ArgIter {
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pub(crate) fn next(&mut self, tys: &Types) -> Option<Arg> {
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let ty = tys.ins.args[self.0.next()?];
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if ty == Id::TYPE {
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return Some(Arg::Type(tys.ins.args[self.0.next().unwrap()]));
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}
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Some(Arg::Value(ty))
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}
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pub(crate) fn next_value(&mut self, tys: &Types) -> Option<Id> {
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loop {
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match self.next(tys)? {
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Arg::Type(_) => continue,
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Arg::Value(id) => break Some(id),
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}
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}
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}
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}
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#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
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pub struct Id(NonZeroU32);
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impl crate::ctx_map::CtxEntry for Id {
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type Ctx = crate::TypeIns;
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type Key<'a> = crate::SymKey<'a>;
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fn key<'a>(&self, ctx: &'a Self::Ctx) -> Self::Key<'a> {
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match self.expand() {
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Kind::Struct(s) => {
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let st = &ctx.structs[s as usize];
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debug_assert_ne!(st.pos, Pos::MAX);
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crate::SymKey::Struct(st.file, st.pos, st.captures)
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}
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Kind::Ptr(p) => crate::SymKey::Pointer(&ctx.ptrs[p as usize]),
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Kind::Func(f) => {
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let fc = &ctx.funcs[f as usize];
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if let Some(base) = fc.base {
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crate::SymKey::FuncInst(base, fc.sig.unwrap().args)
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} else {
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crate::SymKey::Decl(fc.file, fc.name)
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}
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}
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Kind::Global(g) => {
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let gb = &ctx.globals[g as usize];
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crate::SymKey::Decl(gb.file, gb.name)
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}
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Kind::Slice(s) => crate::SymKey::Array(&ctx.slices[s as usize]),
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Kind::Module(_) | Kind::Builtin(_) => crate::SymKey::Decl(u32::MAX, u32::MAX),
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}
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}
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}
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impl Default for Id {
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fn default() -> Self {
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Self(unsafe { NonZeroU32::new_unchecked(UNDECLARED) })
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}
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}
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impl Id {
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pub const DEFAULT_INT: Self = Self::UINT;
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pub fn is_signed(self) -> bool {
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(I8..=INT).contains(&self.repr()) || self.is_never()
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}
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pub fn is_unsigned(self) -> bool {
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(U8..=UINT).contains(&self.repr()) || self.is_never()
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}
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pub fn is_integer(self) -> bool {
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(U8..=INT).contains(&self.repr()) || self.is_never()
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}
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pub fn is_never(self) -> bool {
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self == Self::NEVER
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}
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pub fn strip_pointer(self) -> Self {
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match self.expand() {
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Kind::Ptr(_) => Kind::Builtin(UINT).compress(),
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_ => self,
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}
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}
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pub fn is_pointer(self) -> bool {
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matches!(self.expand(), Kind::Ptr(_)) || self.is_never()
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}
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pub fn try_upcast(self, ob: Self, kind: TyCheck) -> Option<Self> {
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let (oa, ob) = (Self(self.0.min(ob.0)), Self(self.0.max(ob.0)));
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let (a, b) = (oa.strip_pointer(), ob.strip_pointer());
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Some(match () {
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_ if oa == Self::from(NEVER) => ob,
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_ if ob == Self::from(NEVER) => oa,
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_ if oa == ob => oa,
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_ if oa.is_pointer() && ob.is_pointer() => return None,
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_ if a.is_signed() && b.is_signed() || a.is_unsigned() && b.is_unsigned() => ob,
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_ if a.is_unsigned() && b.is_signed() && a.repr() - U8 < b.repr() - I8 => ob,
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_ if a.is_unsigned() && b.is_signed() && a.repr() - U8 > b.repr() - I8 => oa,
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_ if oa.is_integer() && ob.is_pointer() && kind == TyCheck::BinOp => ob,
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_ => return None,
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})
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}
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pub fn expand(self) -> Kind {
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Kind::from_ty(self)
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}
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pub const fn repr(self) -> u32 {
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self.0.get()
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}
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pub(crate) fn simple_size(&self) -> Option<Size> {
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Some(match self.expand() {
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Kind::Ptr(_) => 8,
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Kind::Builtin(VOID) => 0,
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Kind::Builtin(NEVER) => 0,
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Kind::Builtin(INT | UINT) => 8,
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Kind::Builtin(I32 | U32 | TYPE) => 4,
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Kind::Builtin(I16 | U16) => 2,
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Kind::Builtin(I8 | U8 | BOOL) => 1,
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_ => return None,
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})
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}
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pub(crate) fn extend(self) -> Self {
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if self.is_signed() {
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Self::INT
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} else if self.is_pointer() {
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self
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} else {
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Self::UINT
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}
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}
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pub(crate) fn loc(&self, tys: &Types) -> Loc {
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match self.expand() {
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Kind::Ptr(_) | Kind::Builtin(_) => Loc::Reg,
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Kind::Struct(_) if tys.size_of(*self) == 0 => Loc::Reg,
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Kind::Struct(_) | Kind::Slice(_) => Loc::Stack,
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Kind::Func(_) | Kind::Global(_) | Kind::Module(_) => unreachable!(),
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}
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}
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pub(crate) fn has_pointers(&self, tys: &Types) -> bool {
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match self.expand() {
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Kind::Struct(s) => tys.struct_fields(s).iter().any(|f| f.ty.has_pointers(tys)),
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Kind::Ptr(_) => true,
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Kind::Slice(s) => tys.ins.slices[s as usize].len == ArrayLen::MAX,
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_ => false,
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}
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}
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}
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#[derive(PartialEq, Eq, Clone, Copy)]
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pub enum Loc {
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Reg,
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Stack,
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}
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#[derive(PartialEq, Eq, Default, Debug, Clone, Copy)]
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pub enum TyCheck {
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BinOp,
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#[default]
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Assign,
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}
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impl From<u64> for Id {
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fn from(id: u64) -> Self {
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Self(unsafe { NonZeroU32::new_unchecked(id as _) })
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}
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}
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impl From<u32> for Id {
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fn from(id: u32) -> Self {
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Kind::Builtin(id).compress()
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}
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}
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const fn array_to_lower_case<const N: usize>(array: [u8; N]) -> [u8; N] {
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let mut result = [0; N];
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let mut i = 0;
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while i < N {
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result[i] = array[i].to_ascii_lowercase();
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i += 1;
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}
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result
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}
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// const string to lower case
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macro_rules! builtin_type {
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($($name:ident;)*) => {
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$(pub const $name: Builtin = ${index(0)} + 1;)*
|
|
|
|
mod __lc_names {
|
|
use super::*;
|
|
$(pub const $name: &str = unsafe {
|
|
const LCL: &[u8] = unsafe {
|
|
&array_to_lower_case(
|
|
*(stringify!($name).as_ptr() as *const [u8; stringify!($name).len()])
|
|
)
|
|
};
|
|
core::str::from_utf8_unchecked(LCL)
|
|
};)*
|
|
}
|
|
|
|
#[allow(dead_code)]
|
|
impl Id {
|
|
$(pub const $name: Self = Kind::Builtin($name).compress();)*
|
|
}
|
|
|
|
pub fn from_str(name: &str) -> Option<Builtin> {
|
|
match name {
|
|
$(__lc_names::$name => Some($name),)*
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
pub fn to_str(ty: Builtin) -> &'static str {
|
|
match ty {
|
|
$($name => __lc_names::$name,)*
|
|
v => unreachable!("invalid type: {}", v),
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
builtin_type! {
|
|
UNDECLARED;
|
|
LEFT_UNREACHABLE;
|
|
RIGHT_UNREACHABLE;
|
|
NEVER;
|
|
VOID;
|
|
TYPE;
|
|
BOOL;
|
|
U8;
|
|
U16;
|
|
U32;
|
|
UINT;
|
|
I8;
|
|
I16;
|
|
I32;
|
|
INT;
|
|
|
|
}
|
|
|
|
macro_rules! type_kind {
|
|
($(#[$meta:meta])* $vis:vis enum $name:ident {$( $variant:ident, )*}) => {
|
|
$(#[$meta])*
|
|
$vis enum $name {
|
|
$($variant($variant),)*
|
|
}
|
|
|
|
impl $name {
|
|
const FLAG_BITS: u32 = (${count($variant)} as u32).next_power_of_two().ilog2();
|
|
const FLAG_OFFSET: u32 = core::mem::size_of::<Id>() as u32 * 8 - Self::FLAG_BITS;
|
|
const INDEX_MASK: u32 = (1 << (32 - Self::FLAG_BITS)) - 1;
|
|
|
|
$vis fn from_ty(ty: Id) -> Self {
|
|
let (flag, index) = (ty.repr() >> Self::FLAG_OFFSET, ty.repr() & Self::INDEX_MASK);
|
|
match flag {
|
|
$(${index(0)} => Self::$variant(index),)*
|
|
i => unreachable!("{i}"),
|
|
}
|
|
}
|
|
|
|
$vis const fn compress(self) -> Id {
|
|
let (index, flag) = match self {
|
|
$(Self::$variant(index) => (index, ${index(0)}),)*
|
|
};
|
|
Id(unsafe { NonZeroU32::new_unchecked((flag << Self::FLAG_OFFSET) | index) })
|
|
}
|
|
|
|
$vis const fn inner(self) -> u32 {
|
|
match self {
|
|
$(Self::$variant(index) => index,)*
|
|
}
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
type_kind! {
|
|
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
|
|
pub enum Kind {
|
|
Builtin,
|
|
Struct,
|
|
Ptr,
|
|
Func,
|
|
Global,
|
|
Module,
|
|
Slice,
|
|
}
|
|
}
|
|
|
|
impl Default for Kind {
|
|
fn default() -> Self {
|
|
Self::Builtin(UNDECLARED)
|
|
}
|
|
}
|
|
|
|
pub struct Display<'a> {
|
|
tys: &'a super::Types,
|
|
files: &'a [parser::Ast],
|
|
ty: Id,
|
|
}
|
|
|
|
impl<'a> Display<'a> {
|
|
pub fn new(tys: &'a super::Types, files: &'a [parser::Ast], ty: Id) -> Self {
|
|
Self { tys, files, ty }
|
|
}
|
|
|
|
pub fn rety(&self, ty: Id) -> Self {
|
|
Self::new(self.tys, self.files, ty)
|
|
}
|
|
}
|
|
|
|
impl core::fmt::Display for Display<'_> {
|
|
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
|
|
use Kind as TK;
|
|
match TK::from_ty(self.ty) {
|
|
TK::Module(idx) => {
|
|
f.write_str("@use(\"")?;
|
|
self.files[idx as usize].path.fmt(f)?;
|
|
f.write_str(")[")?;
|
|
idx.fmt(f)?;
|
|
f.write_str("]")
|
|
}
|
|
TK::Builtin(ty) => f.write_str(to_str(ty)),
|
|
TK::Ptr(ty) => {
|
|
f.write_str("^")?;
|
|
self.rety(self.tys.ins.ptrs[ty as usize].base).fmt(f)
|
|
}
|
|
TK::Struct(idx) => {
|
|
let record = &self.tys.ins.structs[idx as usize];
|
|
if ident::is_null(record.name) {
|
|
f.write_str("[")?;
|
|
idx.fmt(f)?;
|
|
f.write_str("]{")?;
|
|
for (i, &super::Field { name, ty }) in
|
|
self.tys.struct_fields(idx).iter().enumerate()
|
|
{
|
|
if i != 0 {
|
|
f.write_str(", ")?;
|
|
}
|
|
f.write_str(self.tys.names.ident_str(name))?;
|
|
f.write_str(": ")?;
|
|
self.rety(ty).fmt(f)?;
|
|
}
|
|
f.write_str("}")
|
|
} else {
|
|
let file = &self.files[record.file as usize];
|
|
f.write_str(file.ident_str(record.name))
|
|
}
|
|
}
|
|
TK::Func(idx) => {
|
|
f.write_str("fn")?;
|
|
idx.fmt(f)
|
|
}
|
|
TK::Global(idx) => {
|
|
f.write_str("global")?;
|
|
idx.fmt(f)
|
|
}
|
|
TK::Slice(idx) => {
|
|
let array = self.tys.ins.slices[idx as usize];
|
|
f.write_str("[")?;
|
|
self.rety(array.elem).fmt(f)?;
|
|
if array.len != ArrayLen::MAX {
|
|
f.write_str("; ")?;
|
|
array.len.fmt(f)?;
|
|
}
|
|
f.write_str("]")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg_attr(not(feature = "opts"), expect(dead_code))]
|
|
pub fn bin_ret(ty: Id, op: TokenKind) -> Id {
|
|
use TokenKind as T;
|
|
match op {
|
|
T::Lt | T::Gt | T::Le | T::Ge | T::Ne | T::Eq => BOOL.into(),
|
|
_ => ty,
|
|
}
|
|
}
|
|
}
|
|
|
|
type EncodedInstr = (usize, [u8; instrs::MAX_SIZE]);
|
|
type Offset = u32;
|
|
type Size = u32;
|
|
|
|
fn emit(out: &mut Vec<u8>, (len, instr): EncodedInstr) {
|
|
out.extend_from_slice(&instr[..len]);
|
|
}
|
|
|
|
#[derive(PartialEq, Eq, Hash, Clone, Copy)]
|
|
pub enum SymKey<'a> {
|
|
Pointer(&'a Ptr),
|
|
Struct(FileId, Pos, ty::Tuple),
|
|
FuncInst(ty::Func, ty::Tuple),
|
|
Decl(FileId, Ident),
|
|
Array(&'a Array),
|
|
}
|
|
|
|
#[derive(Clone, Copy)]
|
|
struct Sig {
|
|
args: ty::Tuple,
|
|
ret: ty::Id,
|
|
}
|
|
|
|
struct Func {
|
|
file: FileId,
|
|
name: Ident,
|
|
base: Option<ty::Func>,
|
|
computed: Option<ty::Id>,
|
|
expr: ExprRef,
|
|
sig: Option<Sig>,
|
|
offset: Offset,
|
|
// TODO: change to indices into common vec
|
|
relocs: Vec<TypedReloc>,
|
|
code: Vec<u8>,
|
|
}
|
|
|
|
impl Default for Func {
|
|
fn default() -> Self {
|
|
Self {
|
|
file: u32::MAX,
|
|
name: 0,
|
|
base: None,
|
|
computed: None,
|
|
expr: Default::default(),
|
|
sig: None,
|
|
offset: u32::MAX,
|
|
relocs: Default::default(),
|
|
code: Default::default(),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Clone, Copy)]
|
|
struct TypedReloc {
|
|
target: ty::Id,
|
|
reloc: Reloc,
|
|
}
|
|
|
|
#[derive(Clone)]
|
|
struct Global {
|
|
file: FileId,
|
|
name: Ident,
|
|
ty: ty::Id,
|
|
offset: Offset,
|
|
data: Vec<u8>,
|
|
}
|
|
|
|
impl Default for Global {
|
|
fn default() -> Self {
|
|
Self {
|
|
ty: Default::default(),
|
|
offset: u32::MAX,
|
|
data: Default::default(),
|
|
file: u32::MAX,
|
|
name: 0,
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO: make into bit struct (width: u2, sub_offset: u3, offset: u27)
|
|
#[derive(Clone, Copy, Debug)]
|
|
struct Reloc {
|
|
offset: Offset,
|
|
sub_offset: u8,
|
|
width: u8,
|
|
}
|
|
|
|
impl Reloc {
|
|
fn new(offset: usize, sub_offset: u8, width: u8) -> Self {
|
|
Self { offset: offset as u32, sub_offset, width }
|
|
}
|
|
|
|
fn apply_jump(mut self, code: &mut [u8], to: u32, from: u32) -> i64 {
|
|
self.offset += from;
|
|
let offset = to as i64 - self.offset as i64;
|
|
self.write_offset(code, offset);
|
|
offset
|
|
}
|
|
|
|
fn write_offset(&self, code: &mut [u8], offset: i64) {
|
|
let bytes = offset.to_ne_bytes();
|
|
let slice = &mut code[self.offset as usize + self.sub_offset as usize..];
|
|
slice[..self.width as usize].copy_from_slice(&bytes[..self.width as usize]);
|
|
}
|
|
}
|
|
|
|
struct Field {
|
|
name: Ident,
|
|
ty: ty::Id,
|
|
}
|
|
|
|
#[derive(Default)]
|
|
struct Struct {
|
|
name: Ident,
|
|
pos: Pos,
|
|
file: FileId,
|
|
size: Cell<Size>,
|
|
align: Cell<u8>,
|
|
captures: ty::Tuple,
|
|
explicit_alignment: Option<u8>,
|
|
field_start: u32,
|
|
}
|
|
|
|
#[derive(PartialEq, Eq, Hash)]
|
|
pub struct Ptr {
|
|
base: ty::Id,
|
|
}
|
|
|
|
#[derive(Clone, Copy, PartialEq, Eq, Hash)]
|
|
pub struct Array {
|
|
elem: ty::Id,
|
|
len: ArrayLen,
|
|
}
|
|
impl Array {
|
|
fn len(&self) -> Option<usize> {
|
|
(self.len != ArrayLen::MAX).then_some(self.len as usize)
|
|
}
|
|
}
|
|
|
|
enum PLoc {
|
|
Reg(u8, u16),
|
|
WideReg(u8, u16),
|
|
Ref(u8, u32),
|
|
}
|
|
|
|
struct ParamAlloc(Range<u8>);
|
|
|
|
impl ParamAlloc {
|
|
pub fn next(&mut self, ty: ty::Id, tys: &Types) -> Option<PLoc> {
|
|
Some(match tys.size_of(ty) {
|
|
0 => return None,
|
|
size @ 1..=8 => PLoc::Reg(self.0.next().unwrap(), size as _),
|
|
size @ 9..=16 => PLoc::WideReg(self.0.next_chunk::<2>().unwrap()[0], size as _),
|
|
size @ 17.. => PLoc::Ref(self.0.next().unwrap(), size),
|
|
})
|
|
}
|
|
}
|
|
|
|
#[repr(packed)]
|
|
#[allow(dead_code)]
|
|
struct AbleOsExecutableHeader {
|
|
magic_number: [u8; 3],
|
|
executable_version: u32,
|
|
|
|
code_length: u64,
|
|
data_length: u64,
|
|
debug_length: u64,
|
|
config_length: u64,
|
|
metadata_length: u64,
|
|
}
|
|
|
|
impl ctx_map::CtxEntry for Ident {
|
|
type Ctx = str;
|
|
type Key<'a> = &'a str;
|
|
|
|
fn key<'a>(&self, ctx: &'a Self::Ctx) -> Self::Key<'a> {
|
|
unsafe { ctx.get_unchecked(ident::range(*self)) }
|
|
}
|
|
}
|
|
|
|
#[derive(Default)]
|
|
struct IdentInterner {
|
|
lookup: ctx_map::CtxMap<Ident>,
|
|
strings: String,
|
|
}
|
|
|
|
impl IdentInterner {
|
|
fn intern(&mut self, ident: &str) -> Ident {
|
|
let (entry, hash) = self.lookup.entry(ident, &self.strings);
|
|
match entry {
|
|
hash_map::RawEntryMut::Occupied(o) => o.get_key_value().0.value,
|
|
hash_map::RawEntryMut::Vacant(v) => {
|
|
let id = ident::new(self.strings.len() as _, ident.len() as _).unwrap();
|
|
self.strings.push_str(ident);
|
|
v.insert(ctx_map::Key { hash, value: id }, ());
|
|
id
|
|
}
|
|
}
|
|
}
|
|
|
|
fn ident_str(&self, ident: Ident) -> &str {
|
|
&self.strings[ident::range(ident)]
|
|
}
|
|
|
|
fn project(&self, ident: &str) -> Option<Ident> {
|
|
self.lookup.get(ident, &self.strings).copied()
|
|
}
|
|
|
|
fn clear(&mut self) {
|
|
self.lookup.clear();
|
|
self.strings.clear()
|
|
}
|
|
}
|
|
|
|
#[derive(Default)]
|
|
struct TypesTmp {
|
|
fields: Vec<Field>,
|
|
frontier: Vec<ty::Id>,
|
|
globals: Vec<ty::Global>,
|
|
funcs: Vec<ty::Func>,
|
|
args: Vec<ty::Id>,
|
|
}
|
|
|
|
#[derive(Default)]
|
|
pub struct TypeIns {
|
|
funcs: Vec<Func>,
|
|
args: Vec<ty::Id>,
|
|
globals: Vec<Global>,
|
|
structs: Vec<Struct>,
|
|
fields: Vec<Field>,
|
|
ptrs: Vec<Ptr>,
|
|
slices: Vec<Array>,
|
|
}
|
|
|
|
struct FTask {
|
|
file: FileId,
|
|
id: ty::Func,
|
|
}
|
|
|
|
struct StringRef(ty::Global);
|
|
|
|
impl ctx_map::CtxEntry for StringRef {
|
|
type Ctx = [Global];
|
|
type Key<'a> = &'a [u8];
|
|
|
|
fn key<'a>(&self, ctx: &'a Self::Ctx) -> Self::Key<'a> {
|
|
&ctx[self.0 as usize].data
|
|
}
|
|
}
|
|
|
|
#[derive(Default)]
|
|
struct Types {
|
|
syms: ctx_map::CtxMap<ty::Id>,
|
|
names: IdentInterner,
|
|
strings: ctx_map::CtxMap<StringRef>,
|
|
ins: TypeIns,
|
|
tmp: TypesTmp,
|
|
tasks: Vec<Option<FTask>>,
|
|
}
|
|
|
|
const HEADER_SIZE: usize = core::mem::size_of::<AbleOsExecutableHeader>();
|
|
|
|
trait TypeParser {
|
|
fn tys(&mut self) -> &mut Types;
|
|
fn on_reuse(&mut self, existing: ty::Id);
|
|
fn find_local_ty(&mut self, name: Ident) -> Option<ty::Id>;
|
|
fn eval_const(&mut self, file: FileId, expr: &Expr, ty: ty::Id) -> u64;
|
|
fn eval_global(&mut self, file: FileId, name: Ident, expr: &Expr) -> ty::Id;
|
|
fn infer_type(&mut self, expr: &Expr) -> ty::Id;
|
|
fn report(&self, file: FileId, pos: Pos, msg: impl Display) -> ty::Id;
|
|
|
|
fn find_type(
|
|
&mut self,
|
|
pos: Pos,
|
|
from_file: FileId,
|
|
file: FileId,
|
|
id: Result<Ident, &str>,
|
|
files: &[parser::Ast],
|
|
) -> ty::Id {
|
|
let ty = if let Ok(id) = id
|
|
&& let Some(ty) = self.find_local_ty(id)
|
|
{
|
|
ty
|
|
} else if let Ok(id) = id
|
|
&& let tys = self.tys()
|
|
&& let Some(&ty) = tys.syms.get(SymKey::Decl(file, id), &tys.ins)
|
|
{
|
|
self.on_reuse(ty);
|
|
ty
|
|
} else {
|
|
let f = &files[file as usize];
|
|
|
|
let Some((Expr::BinOp { left, right, .. }, name)) = f.find_decl(id) else {
|
|
return match id {
|
|
Ok(name) => {
|
|
let name = files[from_file as usize].ident_str(name);
|
|
self.report(from_file, pos, format_args!("undefined indentifier: {name}"))
|
|
}
|
|
Err("main") => self.report(
|
|
from_file,
|
|
pos,
|
|
format_args!(
|
|
"missing main function in '{}', compiler can't \
|
|
emmit libraries since such concept is not defined",
|
|
f.path
|
|
),
|
|
),
|
|
Err(name) => {
|
|
self.report(from_file, pos, format_args!("undefined indentifier: {name}"))
|
|
}
|
|
};
|
|
};
|
|
|
|
let tys = self.tys();
|
|
if let Some(&ty) = tys.syms.get(SymKey::Decl(file, name), &tys.ins) {
|
|
ty
|
|
} else {
|
|
let ty = left
|
|
.find_pattern_path(name, right, |right| {
|
|
self.parse_ty(file, right, Some(name), files)
|
|
})
|
|
.unwrap_or_else(|_| unreachable!());
|
|
let tys = self.tys();
|
|
let nm = match ty.expand() {
|
|
ty::Kind::Struct(s) => &mut tys.ins.structs[s as usize].name,
|
|
ty::Kind::Func(s) => &mut tys.ins.funcs[s as usize].name,
|
|
ty::Kind::Global(s) => &mut tys.ins.globals[s as usize].name,
|
|
_ => &mut 0,
|
|
};
|
|
if *nm == 0 {
|
|
*nm = name;
|
|
}
|
|
tys.syms.insert(SymKey::Decl(file, name), ty, &tys.ins);
|
|
ty
|
|
}
|
|
};
|
|
|
|
let tys = self.tys();
|
|
if let ty::Kind::Global(g) = ty.expand() {
|
|
let g = &tys.ins.globals[g as usize];
|
|
if g.ty == ty::Id::TYPE {
|
|
return ty::Id::from(
|
|
u32::from_ne_bytes(g.data.as_slice().try_into().unwrap()) as u64
|
|
);
|
|
}
|
|
}
|
|
ty
|
|
}
|
|
|
|
/// returns none if comptime eval is required
|
|
fn parse_ty(
|
|
&mut self,
|
|
file: FileId,
|
|
expr: &Expr,
|
|
name: Option<Ident>,
|
|
files: &[parser::Ast],
|
|
) -> ty::Id {
|
|
match *expr {
|
|
Expr::Mod { id, .. } => ty::Kind::Module(id).compress(),
|
|
Expr::UnOp { op: TokenKind::Xor, val, .. } => {
|
|
let base = self.parse_ty(file, val, None, files);
|
|
self.tys().make_ptr(base)
|
|
}
|
|
Expr::Ident { id, .. } if ident::is_null(id) => id.into(),
|
|
Expr::Ident { id, pos, .. } => self.find_type(pos, file, file, Ok(id), files),
|
|
Expr::Field { target, pos, name }
|
|
if let ty::Kind::Module(inside) =
|
|
self.parse_ty(file, target, None, files).expand() =>
|
|
{
|
|
self.find_type(pos, file, inside, Err(name), files)
|
|
}
|
|
Expr::Directive { name: "TypeOf", args: [expr], .. } => self.infer_type(expr),
|
|
Expr::Slice { size: None, item, .. } => {
|
|
let ty = self.parse_ty(file, item, None, files);
|
|
self.tys().make_array(ty, ArrayLen::MAX)
|
|
}
|
|
Expr::Slice { size: Some(&Expr::Number { value, .. }), item, .. } => {
|
|
let ty = self.parse_ty(file, item, None, files);
|
|
self.tys().make_array(ty, value as _)
|
|
}
|
|
Expr::Slice { size, item, .. } => {
|
|
let ty = self.parse_ty(file, item, None, files);
|
|
let len = size
|
|
.map_or(ArrayLen::MAX, |expr| self.eval_const(file, expr, ty::Id::U32) as _);
|
|
self.tys().make_array(ty, len)
|
|
}
|
|
Expr::Struct { pos, fields, packed, captured, .. } => {
|
|
let captures_start = self.tys().tmp.args.len();
|
|
for &cp in captured {
|
|
let ty = self.find_local_ty(cp).expect("TODO");
|
|
self.tys().tmp.args.push(ty);
|
|
}
|
|
let captured = self.tys().pack_args(captures_start).expect("TODO");
|
|
|
|
let sym = SymKey::Struct(file, pos, captured);
|
|
let tys = self.tys();
|
|
if let Some(&ty) = tys.syms.get(sym, &tys.ins) {
|
|
return ty;
|
|
}
|
|
|
|
let prev_tmp = self.tys().tmp.fields.len();
|
|
for field in fields.iter().filter_map(CommentOr::or) {
|
|
let ty = self.parse_ty(file, &field.ty, None, files);
|
|
let field = Field { name: self.tys().names.intern(field.name), ty };
|
|
self.tys().tmp.fields.push(field);
|
|
}
|
|
|
|
let tys = self.tys();
|
|
tys.ins.structs.push(Struct {
|
|
file,
|
|
pos,
|
|
name: name.unwrap_or(0),
|
|
field_start: tys.ins.fields.len() as _,
|
|
explicit_alignment: packed.then_some(1),
|
|
..Default::default()
|
|
});
|
|
|
|
tys.ins.fields.extend(tys.tmp.fields.drain(prev_tmp..));
|
|
|
|
let ty = ty::Kind::Struct(tys.ins.structs.len() as u32 - 1).compress();
|
|
tys.syms.insert(sym, ty, &tys.ins);
|
|
ty
|
|
}
|
|
Expr::Closure { pos, args, ret, .. } if let Some(name) = name => {
|
|
let func = Func {
|
|
file,
|
|
name,
|
|
sig: 'b: {
|
|
let arg_base = self.tys().tmp.args.len();
|
|
for arg in args {
|
|
let sym = parser::find_symbol(&files[file as usize].symbols, arg.id);
|
|
if sym.flags & idfl::COMPTIME != 0 {
|
|
self.tys().tmp.args.truncate(arg_base);
|
|
break 'b None;
|
|
}
|
|
let ty = self.parse_ty(file, &arg.ty, None, files);
|
|
self.tys().tmp.args.push(ty);
|
|
}
|
|
|
|
let Some(args) = self.tys().pack_args(arg_base) else {
|
|
return self.report(file, pos, "function has too many argumnets");
|
|
};
|
|
let ret = self.parse_ty(file, ret, None, files);
|
|
|
|
Some(Sig { args, ret })
|
|
},
|
|
expr: ExprRef::new(expr),
|
|
..Default::default()
|
|
};
|
|
|
|
let id = self.tys().ins.funcs.len() as _;
|
|
self.tys().ins.funcs.push(func);
|
|
|
|
ty::Kind::Func(id).compress()
|
|
}
|
|
_ if let Some(name) = name => self.eval_global(file, name, expr),
|
|
_ => ty::Id::from(self.eval_const(file, expr, ty::Id::TYPE)),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Types {
|
|
fn struct_field_range(&self, strct: ty::Struct) -> Range<usize> {
|
|
let start = self.ins.structs[strct as usize].field_start as usize;
|
|
let end = self
|
|
.ins
|
|
.structs
|
|
.get(strct as usize + 1)
|
|
.map_or(self.ins.fields.len(), |s| s.field_start as usize);
|
|
start..end
|
|
}
|
|
|
|
fn pack_args(&mut self, arg_base: usize) -> Option<ty::Tuple> {
|
|
let base = self.ins.args.len();
|
|
self.ins.args.extend(self.tmp.args.drain(arg_base..));
|
|
let needle = &self.ins.args[base..];
|
|
if needle.is_empty() {
|
|
return Some(ty::Tuple::empty());
|
|
}
|
|
let len = needle.len();
|
|
// FIXME: maybe later when this becomes a bottleneck we use more
|
|
// efficient search (SIMD?, indexing?)
|
|
let sp = self.ins.args.windows(needle.len()).position(|val| val == needle).unwrap();
|
|
self.ins.args.truncate((sp + needle.len()).max(base));
|
|
ty::Tuple::new(sp, len)
|
|
}
|
|
|
|
fn struct_fields(&self, strct: ty::Struct) -> &[Field] {
|
|
&self.ins.fields[self.struct_field_range(strct)]
|
|
}
|
|
|
|
fn reassemble(&mut self, buf: &mut Vec<u8>) {
|
|
self.ins.funcs.iter_mut().for_each(|f| f.offset = u32::MAX);
|
|
self.ins.globals.iter_mut().for_each(|g| g.offset = u32::MAX);
|
|
self.assemble(buf)
|
|
}
|
|
|
|
fn assemble(&mut self, to: &mut Vec<u8>) {
|
|
to.extend([0u8; HEADER_SIZE]);
|
|
|
|
emit(to, instrs::jal(reg::RET_ADDR, reg::ZERO, 0));
|
|
emit(to, instrs::tx());
|
|
let exe = self.dump_reachable(0, to);
|
|
Reloc::new(HEADER_SIZE, 3, 4).apply_jump(to, self.ins.funcs[0].offset, 0);
|
|
|
|
unsafe { *to.as_mut_ptr().cast::<AbleOsExecutableHeader>() = exe }
|
|
}
|
|
|
|
fn dump_reachable(&mut self, from: ty::Func, to: &mut Vec<u8>) -> AbleOsExecutableHeader {
|
|
debug_assert!(self.tmp.frontier.is_empty());
|
|
debug_assert!(self.tmp.funcs.is_empty());
|
|
debug_assert!(self.tmp.globals.is_empty());
|
|
|
|
self.tmp.frontier.push(ty::Kind::Func(from).compress());
|
|
while let Some(itm) = self.tmp.frontier.pop() {
|
|
match itm.expand() {
|
|
ty::Kind::Func(func) => {
|
|
let fuc = &mut self.ins.funcs[func as usize];
|
|
if task::is_done(fuc.offset) {
|
|
continue;
|
|
}
|
|
fuc.offset = 0;
|
|
self.tmp.funcs.push(func);
|
|
self.tmp.frontier.extend(fuc.relocs.iter().map(|r| r.target));
|
|
}
|
|
ty::Kind::Global(glob) => {
|
|
let glb = &mut self.ins.globals[glob as usize];
|
|
if task::is_done(glb.offset) {
|
|
continue;
|
|
}
|
|
glb.offset = 0;
|
|
self.tmp.globals.push(glob);
|
|
}
|
|
_ => unreachable!(),
|
|
}
|
|
}
|
|
|
|
for &func in &self.tmp.funcs {
|
|
let fuc = &mut self.ins.funcs[func as usize];
|
|
fuc.offset = to.len() as _;
|
|
debug_assert!(!fuc.code.is_empty());
|
|
to.extend(&fuc.code);
|
|
}
|
|
|
|
let code_length = to.len();
|
|
|
|
for global in self.tmp.globals.drain(..) {
|
|
let global = &mut self.ins.globals[global as usize];
|
|
global.offset = to.len() as _;
|
|
to.extend(&global.data);
|
|
}
|
|
|
|
let data_length = to.len() - code_length;
|
|
|
|
for func in self.tmp.funcs.drain(..) {
|
|
let fuc = &self.ins.funcs[func as usize];
|
|
for rel in &fuc.relocs {
|
|
let offset = match rel.target.expand() {
|
|
ty::Kind::Func(fun) => self.ins.funcs[fun as usize].offset,
|
|
ty::Kind::Global(glo) => self.ins.globals[glo as usize].offset,
|
|
_ => unreachable!(),
|
|
};
|
|
rel.reloc.apply_jump(to, offset, fuc.offset);
|
|
}
|
|
}
|
|
|
|
AbleOsExecutableHeader {
|
|
magic_number: [0x15, 0x91, 0xD2],
|
|
executable_version: 0,
|
|
code_length: code_length.saturating_sub(HEADER_SIZE) as _,
|
|
data_length: data_length as _,
|
|
debug_length: 0,
|
|
config_length: 0,
|
|
metadata_length: 0,
|
|
}
|
|
}
|
|
|
|
pub fn disasm<'a>(
|
|
&'a self,
|
|
mut sluce: &[u8],
|
|
files: &'a [parser::Ast],
|
|
output: &mut String,
|
|
eca_handler: impl FnMut(&mut &[u8]),
|
|
) -> Result<(), hbbytecode::DisasmError<'a>> {
|
|
use instrs::DisasmItem;
|
|
let functions = self
|
|
.ins
|
|
.funcs
|
|
.iter()
|
|
.filter(|f| task::is_done(f.offset))
|
|
.map(|f| {
|
|
let name = if f.file != u32::MAX {
|
|
let file = &files[f.file as usize];
|
|
file.ident_str(f.name)
|
|
} else {
|
|
"target_fn"
|
|
};
|
|
(f.offset, (name, f.code.len() as u32, DisasmItem::Func))
|
|
})
|
|
.chain(self.ins.globals.iter().filter(|g| task::is_done(g.offset)).map(|g| {
|
|
let name = if g.file == u32::MAX {
|
|
core::str::from_utf8(&g.data).unwrap_or("invalid utf-8")
|
|
} else {
|
|
let file = &files[g.file as usize];
|
|
file.ident_str(g.name)
|
|
};
|
|
(g.offset, (name, g.data.len() as Size, DisasmItem::Global))
|
|
}))
|
|
.collect::<BTreeMap<_, _>>();
|
|
instrs::disasm(&mut sluce, &functions, output, eca_handler)
|
|
}
|
|
|
|
fn parama(&self, ret: impl Into<ty::Id>) -> (Option<PLoc>, ParamAlloc) {
|
|
let mut iter = ParamAlloc(1..12);
|
|
let ret = iter.next(ret.into(), self);
|
|
iter.0.start += ret.is_none() as u8;
|
|
(ret, iter)
|
|
}
|
|
|
|
fn make_ptr(&mut self, base: ty::Id) -> ty::Id {
|
|
ty::Kind::Ptr(self.make_ptr_low(base)).compress()
|
|
}
|
|
|
|
fn make_ptr_low(&mut self, base: ty::Id) -> ty::Ptr {
|
|
let ptr = Ptr { base };
|
|
let (entry, hash) = self.syms.entry(SymKey::Pointer(&ptr), &self.ins);
|
|
match entry {
|
|
hash_map::RawEntryMut::Occupied(o) => o.get_key_value().0.value,
|
|
hash_map::RawEntryMut::Vacant(v) => {
|
|
self.ins.ptrs.push(ptr);
|
|
v.insert(
|
|
ctx_map::Key {
|
|
value: ty::Kind::Ptr(self.ins.ptrs.len() as u32 - 1).compress(),
|
|
hash,
|
|
},
|
|
(),
|
|
)
|
|
.0
|
|
.value
|
|
}
|
|
}
|
|
.expand()
|
|
.inner()
|
|
}
|
|
|
|
fn make_array(&mut self, ty: ty::Id, len: ArrayLen) -> ty::Id {
|
|
ty::Kind::Slice(self.make_array_low(ty, len)).compress()
|
|
}
|
|
|
|
fn make_array_low(&mut self, ty: ty::Id, len: ArrayLen) -> ty::Slice {
|
|
self.syms
|
|
.get_or_insert(SymKey::Array(&Array { elem: ty, len }), &mut self.ins, |ins| {
|
|
ins.slices.push(Array { elem: ty, len });
|
|
ty::Kind::Slice(ins.slices.len() as u32 - 1).compress()
|
|
})
|
|
.expand()
|
|
.inner()
|
|
|
|
//let array = Array { ty, len };
|
|
//let (entry, hash) = self.syms.entry(SymKey::Array(&array), &self.ins);
|
|
//match entry {
|
|
// hash_map::RawEntryMut::Occupied(o) => o.get_key_value().0.value,
|
|
// hash_map::RawEntryMut::Vacant(v) => {
|
|
// self.ins.arrays.push(array);
|
|
// v.insert(
|
|
// ctx_map::Key {
|
|
// value: ty::Kind::Slice(self.ins.ptrs.len() as u32 - 1).compress(),
|
|
// hash,
|
|
// },
|
|
// (),
|
|
// )
|
|
// .0
|
|
// .value
|
|
// }
|
|
//}
|
|
//.expand()
|
|
//.inner()
|
|
}
|
|
|
|
fn size_of(&self, ty: ty::Id) -> Size {
|
|
match ty.expand() {
|
|
ty::Kind::Slice(arr) => {
|
|
let arr = &self.ins.slices[arr as usize];
|
|
match arr.len {
|
|
0 => 0,
|
|
ArrayLen::MAX => 16,
|
|
len => self.size_of(arr.elem) * len,
|
|
}
|
|
}
|
|
ty::Kind::Struct(stru) => {
|
|
if self.ins.structs[stru as usize].size.get() != 0 {
|
|
return self.ins.structs[stru as usize].size.get();
|
|
}
|
|
|
|
let mut oiter = OffsetIter::new(stru, self);
|
|
while oiter.next(self).is_some() {}
|
|
self.ins.structs[stru as usize].size.set(oiter.offset);
|
|
oiter.offset
|
|
}
|
|
_ if let Some(size) = ty.simple_size() => size,
|
|
ty => unimplemented!("size_of: {:?}", ty),
|
|
}
|
|
}
|
|
|
|
fn align_of(&self, ty: ty::Id) -> Size {
|
|
match ty.expand() {
|
|
ty::Kind::Struct(stru) => {
|
|
if self.ins.structs[stru as usize].align.get() != 0 {
|
|
return self.ins.structs[stru as usize].align.get() as _;
|
|
}
|
|
let align = self.ins.structs[stru as usize].explicit_alignment.map_or_else(
|
|
|| {
|
|
self.struct_fields(stru)
|
|
.iter()
|
|
.map(|&Field { ty, .. }| self.align_of(ty))
|
|
.max()
|
|
.unwrap_or(1)
|
|
},
|
|
|a| a as _,
|
|
);
|
|
self.ins.structs[stru as usize].align.set(align.try_into().unwrap());
|
|
align
|
|
}
|
|
ty::Kind::Slice(arr) => {
|
|
let arr = &self.ins.slices[arr as usize];
|
|
match arr.len {
|
|
ArrayLen::MAX => 8,
|
|
_ => self.align_of(arr.elem),
|
|
}
|
|
}
|
|
_ => self.size_of(ty).max(1),
|
|
}
|
|
}
|
|
|
|
fn base_of(&self, ty: ty::Id) -> Option<ty::Id> {
|
|
match ty.expand() {
|
|
ty::Kind::Ptr(p) => Some(self.ins.ptrs[p as usize].base),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
#[cfg_attr(not(feature = "opts"), expect(dead_code))]
|
|
fn find_struct_field(&self, s: ty::Struct, name: &str) -> Option<usize> {
|
|
let name = self.names.project(name)?;
|
|
self.struct_fields(s).iter().position(|f| f.name == name)
|
|
}
|
|
|
|
fn clear(&mut self) {
|
|
self.syms.clear();
|
|
self.names.clear();
|
|
self.strings.clear();
|
|
|
|
self.ins.funcs.clear();
|
|
self.ins.args.clear();
|
|
self.ins.globals.clear();
|
|
self.ins.structs.clear();
|
|
self.ins.fields.clear();
|
|
self.ins.ptrs.clear();
|
|
self.ins.slices.clear();
|
|
|
|
debug_assert_eq!(self.tmp.fields.len(), 0);
|
|
debug_assert_eq!(self.tmp.frontier.len(), 0);
|
|
debug_assert_eq!(self.tmp.globals.len(), 0);
|
|
debug_assert_eq!(self.tmp.funcs.len(), 0);
|
|
debug_assert_eq!(self.tmp.args.len(), 0);
|
|
|
|
debug_assert_eq!(self.tasks.len(), 0);
|
|
}
|
|
}
|
|
|
|
struct OffsetIter {
|
|
strct: ty::Struct,
|
|
offset: Offset,
|
|
fields: Range<usize>,
|
|
}
|
|
|
|
impl OffsetIter {
|
|
fn new(strct: ty::Struct, tys: &Types) -> Self {
|
|
Self { strct, offset: 0, fields: tys.struct_field_range(strct) }
|
|
}
|
|
|
|
fn offset_of(tys: &Types, idx: ty::Struct, field: &str) -> Option<(Offset, ty::Id)> {
|
|
let field_id = tys.names.project(field)?;
|
|
OffsetIter::new(idx, tys)
|
|
.into_iter(tys)
|
|
.find(|(f, _)| f.name == field_id)
|
|
.map(|(f, off)| (off, f.ty))
|
|
}
|
|
|
|
fn next<'a>(&mut self, tys: &'a Types) -> Option<(&'a Field, Offset)> {
|
|
let stru = &tys.ins.structs[self.strct as usize];
|
|
let field = &tys.ins.fields[self.fields.next()?];
|
|
|
|
let align = stru.explicit_alignment.map_or_else(|| tys.align_of(field.ty), |a| a as u32);
|
|
self.offset = (self.offset + align - 1) & !(align - 1);
|
|
|
|
let off = self.offset;
|
|
self.offset += tys.size_of(field.ty);
|
|
Some((field, off))
|
|
}
|
|
|
|
fn next_ty(&mut self, tys: &Types) -> Option<(ty::Id, Offset)> {
|
|
let (field, off) = self.next(tys)?;
|
|
Some((field.ty, off))
|
|
}
|
|
|
|
fn into_iter(mut self, tys: &Types) -> impl Iterator<Item = (&Field, Offset)> {
|
|
core::iter::from_fn(move || self.next(tys))
|
|
}
|
|
}
|
|
|
|
#[cfg(any(feature = "opts", feature = "std"))]
|
|
type HashMap<K, V> = hashbrown::HashMap<K, V, FnvBuildHasher>;
|
|
type FnvBuildHasher = core::hash::BuildHasherDefault<FnvHasher>;
|
|
|
|
struct FnvHasher(u64);
|
|
|
|
impl core::hash::Hasher for FnvHasher {
|
|
fn finish(&self) -> u64 {
|
|
self.0
|
|
}
|
|
|
|
fn write(&mut self, bytes: &[u8]) {
|
|
self.0 = bytes.iter().fold(self.0, |hash, &byte| {
|
|
let mut hash = hash;
|
|
hash ^= byte as u64;
|
|
hash = hash.wrapping_mul(0x100000001B3);
|
|
hash
|
|
});
|
|
}
|
|
}
|
|
|
|
impl Default for FnvHasher {
|
|
fn default() -> Self {
|
|
Self(0xCBF29CE484222325)
|
|
}
|
|
}
|
|
|
|
const VM_STACK_SIZE: usize = 1024 * 64;
|
|
|
|
pub struct Comptime {
|
|
pub vm: hbvm::Vm<LoggedMem, { 1024 * 10 }>,
|
|
stack: Box<[u8; VM_STACK_SIZE]>,
|
|
code: Vec<u8>,
|
|
}
|
|
|
|
impl Comptime {
|
|
fn run(&mut self, ret_loc: &mut [u8], offset: u32) -> u64 {
|
|
self.vm.write_reg(reg::RET, ret_loc.as_mut_ptr() as u64);
|
|
let prev_pc = self.push_pc(offset);
|
|
loop {
|
|
match self.vm.run().expect("TODO") {
|
|
hbvm::VmRunOk::End => break,
|
|
hbvm::VmRunOk::Timer => todo!(),
|
|
hbvm::VmRunOk::Ecall => todo!(),
|
|
hbvm::VmRunOk::Breakpoint => todo!(),
|
|
}
|
|
}
|
|
self.pop_pc(prev_pc);
|
|
|
|
if let len @ 1..=8 = ret_loc.len() {
|
|
ret_loc.copy_from_slice(&self.vm.read_reg(reg::RET).0.to_ne_bytes()[..len])
|
|
}
|
|
|
|
self.vm.read_reg(reg::RET).0
|
|
}
|
|
|
|
fn reset(&mut self) {
|
|
let ptr = unsafe { self.stack.as_mut_ptr().cast::<u8>().add(VM_STACK_SIZE) as u64 };
|
|
self.vm.registers.fill(hbvm::value::Value(0));
|
|
self.vm.write_reg(reg::STACK_PTR, ptr);
|
|
self.vm.pc = hbvm::mem::Address::new(self.code.as_ptr() as u64 + HEADER_SIZE as u64);
|
|
}
|
|
|
|
fn push_pc(&mut self, offset: Offset) -> hbvm::mem::Address {
|
|
let entry = &mut self.code[offset as usize] as *mut _ as _;
|
|
core::mem::replace(&mut self.vm.pc, hbvm::mem::Address::new(entry))
|
|
- self.code.as_ptr() as usize
|
|
}
|
|
|
|
fn pop_pc(&mut self, prev_pc: hbvm::mem::Address) {
|
|
self.vm.pc = prev_pc + self.code.as_ptr() as usize;
|
|
}
|
|
|
|
fn clear(&mut self) {
|
|
self.code.clear();
|
|
}
|
|
}
|
|
|
|
impl Default for Comptime {
|
|
fn default() -> Self {
|
|
let mut stack = Box::<[u8; VM_STACK_SIZE]>::new_uninit();
|
|
let mut vm = hbvm::Vm::default();
|
|
let ptr = unsafe { stack.as_mut_ptr().cast::<u8>().add(VM_STACK_SIZE) as u64 };
|
|
vm.write_reg(reg::STACK_PTR, ptr);
|
|
Self { vm, stack: unsafe { stack.assume_init() }, code: Default::default() }
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
pub fn run_test(
|
|
name: &'static str,
|
|
ident: &'static str,
|
|
input: &'static str,
|
|
test: fn(&'static str, &'static str, &mut String),
|
|
) {
|
|
use std::{io::Write, path::PathBuf, string::ToString};
|
|
|
|
let filter = std::env::var("PT_FILTER").unwrap_or_default();
|
|
if !filter.is_empty() && !name.contains(&filter) {
|
|
return;
|
|
}
|
|
|
|
let mut output = String::new();
|
|
{
|
|
struct DumpOut<'a>(&'a mut String);
|
|
impl Drop for DumpOut<'_> {
|
|
fn drop(&mut self) {
|
|
if std::thread::panicking() {
|
|
std::println!("{}", self.0);
|
|
}
|
|
}
|
|
}
|
|
|
|
let dump = DumpOut(&mut output);
|
|
test(ident, input, dump.0);
|
|
}
|
|
|
|
let mut root = PathBuf::from(
|
|
std::env::var("PT_TEST_ROOT")
|
|
.unwrap_or(concat!(env!("CARGO_MANIFEST_DIR"), "/tests").to_string()),
|
|
);
|
|
root.push(name.replace("::", "_").replace(concat!(env!("CARGO_PKG_NAME"), "_"), ""));
|
|
root.set_extension("txt");
|
|
|
|
let expected = std::fs::read_to_string(&root).unwrap_or_default();
|
|
|
|
if output == expected {
|
|
return;
|
|
}
|
|
|
|
if std::env::var("PT_UPDATE").is_ok() {
|
|
std::fs::write(&root, output).unwrap();
|
|
return;
|
|
}
|
|
|
|
if !root.exists() {
|
|
std::fs::create_dir_all(root.parent().unwrap()).unwrap();
|
|
std::fs::write(&root, vec![]).unwrap();
|
|
}
|
|
|
|
let mut proc = std::process::Command::new("diff")
|
|
.arg("-u")
|
|
.arg("--color")
|
|
.arg(&root)
|
|
.arg("-")
|
|
.stdin(std::process::Stdio::piped())
|
|
.stdout(std::process::Stdio::inherit())
|
|
.spawn()
|
|
.unwrap();
|
|
|
|
proc.stdin.as_mut().unwrap().write_all(output.as_bytes()).unwrap();
|
|
|
|
proc.wait().unwrap();
|
|
|
|
panic!("test failed");
|
|
}
|
|
|
|
#[cfg(test)]
|
|
fn test_parse_files(
|
|
ident: &str,
|
|
input: &str,
|
|
ctx: &mut parser::Ctx,
|
|
) -> (Vec<parser::Ast>, Vec<Vec<u8>>) {
|
|
use {
|
|
self::parser::FileKind,
|
|
std::{borrow::ToOwned, string::ToString},
|
|
};
|
|
|
|
fn find_block<'a>(mut input: &'a str, test_name: &str) -> &'a str {
|
|
const CASE_PREFIX: &str = "#### ";
|
|
const CASE_SUFFIX: &str = "\n```hb";
|
|
loop {
|
|
let Some(pos) = input.find(CASE_PREFIX) else {
|
|
unreachable!("test {test_name} not found");
|
|
};
|
|
|
|
input = unsafe { input.get_unchecked(pos + CASE_PREFIX.len()..) };
|
|
if !input.starts_with(test_name) {
|
|
continue;
|
|
}
|
|
input = unsafe { input.get_unchecked(test_name.len()..) };
|
|
if !input.starts_with(CASE_SUFFIX) {
|
|
continue;
|
|
}
|
|
input = unsafe { input.get_unchecked(CASE_SUFFIX.len()..) };
|
|
|
|
let end = input.find("```").unwrap_or(input.len());
|
|
break unsafe { input.get_unchecked(..end) };
|
|
}
|
|
}
|
|
|
|
let input = find_block(input, ident);
|
|
|
|
let mut module_map = Vec::new();
|
|
let mut embed_map = Vec::new();
|
|
let mut last_start = 0;
|
|
let mut last_module_name = "test.hb";
|
|
for (i, m) in input.match_indices("// in module: ") {
|
|
if last_module_name.ends_with(".hb") {
|
|
fmt::test::format(ident, input[last_start..i].trim());
|
|
module_map.push((last_module_name, &input[last_start..i]));
|
|
} else {
|
|
embed_map.push((last_module_name, &input[last_start..i]));
|
|
}
|
|
let (module_name, _) = input[i + m.len()..].split_once('\n').unwrap();
|
|
last_module_name = module_name;
|
|
last_start = i + m.len() + module_name.len() + 1;
|
|
}
|
|
if last_module_name.ends_with(".hb") {
|
|
fmt::test::format(ident, input[last_start..].trim());
|
|
module_map.push((last_module_name, &input[last_start..]));
|
|
} else {
|
|
embed_map.push((last_module_name, &input[last_start..]));
|
|
}
|
|
|
|
let mut loader = |path: &str, _: &str, kind| match kind {
|
|
FileKind::Module => module_map
|
|
.iter()
|
|
.position(|&(name, _)| name == path)
|
|
.map(|i| i as parser::FileId)
|
|
.ok_or("Module Not Found".to_string()),
|
|
FileKind::Embed => embed_map
|
|
.iter()
|
|
.position(|&(name, _)| name == path)
|
|
.map(|i| i as parser::FileId)
|
|
.ok_or("Embed Not Found".to_string()),
|
|
};
|
|
|
|
(
|
|
module_map
|
|
.iter()
|
|
.map(|&(path, content)| parser::Ast::new(path, content.to_owned(), ctx, &mut loader))
|
|
.collect(),
|
|
embed_map.iter().map(|&(_, content)| content.to_owned().into_bytes()).collect(),
|
|
)
|
|
}
|
|
|
|
#[cfg(test)]
|
|
fn test_run_vm(out: &[u8], output: &mut String) {
|
|
use core::fmt::Write;
|
|
|
|
let mut stack = [0_u64; 1024 * 20];
|
|
|
|
let mut vm = unsafe {
|
|
hbvm::Vm::<_, { 1024 * 100 }>::new(
|
|
LoggedMem::default(),
|
|
hbvm::mem::Address::new(out.as_ptr() as u64).wrapping_add(HEADER_SIZE),
|
|
)
|
|
};
|
|
|
|
vm.write_reg(reg::STACK_PTR, unsafe { stack.as_mut_ptr().add(stack.len()) } as u64);
|
|
|
|
let stat = loop {
|
|
match vm.run() {
|
|
Ok(hbvm::VmRunOk::End) => break Ok(()),
|
|
Ok(hbvm::VmRunOk::Ecall) => match vm.read_reg(2).0 {
|
|
1 => writeln!(output, "ev: Ecall").unwrap(), // compatibility with a test
|
|
69 => {
|
|
let [size, align] = [vm.read_reg(3).0 as usize, vm.read_reg(4).0 as usize];
|
|
let layout = core::alloc::Layout::from_size_align(size, align).unwrap();
|
|
let ptr = unsafe { alloc::alloc::alloc(layout) };
|
|
vm.write_reg(1, ptr as u64);
|
|
}
|
|
96 => {
|
|
let [ptr, size, align] = [
|
|
vm.read_reg(3).0 as usize,
|
|
vm.read_reg(4).0 as usize,
|
|
vm.read_reg(5).0 as usize,
|
|
];
|
|
|
|
let layout = core::alloc::Layout::from_size_align(size, align).unwrap();
|
|
unsafe { alloc::alloc::dealloc(ptr as *mut u8, layout) };
|
|
}
|
|
3 => vm.write_reg(1, 42),
|
|
unknown => unreachable!("unknown ecall: {unknown:?}"),
|
|
},
|
|
Ok(hbvm::VmRunOk::Timer) => {
|
|
writeln!(output, "timed out").unwrap();
|
|
break Ok(());
|
|
}
|
|
Ok(ev) => writeln!(output, "ev: {:?}", ev).unwrap(),
|
|
Err(e) => break Err(e),
|
|
}
|
|
};
|
|
|
|
writeln!(output, "code size: {}", out.len() - HEADER_SIZE).unwrap();
|
|
writeln!(output, "ret: {:?}", vm.read_reg(1).0).unwrap();
|
|
writeln!(output, "status: {:?}", stat).unwrap();
|
|
}
|
|
|
|
#[derive(Default)]
|
|
pub struct LoggedMem {
|
|
pub mem: hbvm::mem::HostMemory,
|
|
op_buf: Vec<hbbytecode::Oper>,
|
|
disp_buf: String,
|
|
prev_instr: Option<hbbytecode::Instr>,
|
|
}
|
|
|
|
impl LoggedMem {
|
|
unsafe fn display_instr<T>(&mut self, instr: hbbytecode::Instr, addr: hbvm::mem::Address) {
|
|
let novm: *const hbvm::Vm<Self, 0> = core::ptr::null();
|
|
let offset = core::ptr::addr_of!((*novm).memory) as usize;
|
|
let regs = unsafe {
|
|
&*core::ptr::addr_of!(
|
|
(*(((self as *mut _ as *mut u8).sub(offset)) as *const hbvm::Vm<Self, 0>))
|
|
.registers
|
|
)
|
|
};
|
|
|
|
let mut bytes = core::slice::from_raw_parts(
|
|
(addr.get() - 1) as *const u8,
|
|
core::mem::size_of::<T>() + 1,
|
|
);
|
|
use core::fmt::Write;
|
|
hbbytecode::parse_args(&mut bytes, instr, &mut self.op_buf).unwrap();
|
|
debug_assert!(bytes.is_empty());
|
|
self.disp_buf.clear();
|
|
write!(self.disp_buf, "{:<10}", format!("{instr:?}")).unwrap();
|
|
for (i, op) in self.op_buf.drain(..).enumerate() {
|
|
if i != 0 {
|
|
write!(self.disp_buf, ", ").unwrap();
|
|
}
|
|
write!(self.disp_buf, "{op:?}").unwrap();
|
|
if let hbbytecode::Oper::R(r) = op {
|
|
write!(self.disp_buf, "({})", regs[r as usize].0).unwrap()
|
|
}
|
|
}
|
|
log::trace!("read-typed: {:x}: {}", addr.get(), self.disp_buf);
|
|
}
|
|
}
|
|
|
|
impl hbvm::mem::Memory for LoggedMem {
|
|
unsafe fn load(
|
|
&mut self,
|
|
addr: hbvm::mem::Address,
|
|
target: *mut u8,
|
|
count: usize,
|
|
) -> Result<(), hbvm::mem::LoadError> {
|
|
log::trace!(
|
|
"load: {:x} {}",
|
|
addr.get(),
|
|
AsHex(core::slice::from_raw_parts(addr.get() as *const u8, count))
|
|
);
|
|
self.mem.load(addr, target, count)
|
|
}
|
|
|
|
unsafe fn store(
|
|
&mut self,
|
|
addr: hbvm::mem::Address,
|
|
source: *const u8,
|
|
count: usize,
|
|
) -> Result<(), hbvm::mem::StoreError> {
|
|
log::trace!(
|
|
"store: {:x} {}",
|
|
addr.get(),
|
|
AsHex(core::slice::from_raw_parts(source, count))
|
|
);
|
|
self.mem.store(addr, source, count)
|
|
}
|
|
|
|
unsafe fn prog_read<T: Copy + 'static>(&mut self, addr: hbvm::mem::Address) -> T {
|
|
if log::log_enabled!(log::Level::Trace) {
|
|
if core::any::TypeId::of::<u8>() == core::any::TypeId::of::<T>() {
|
|
if let Some(instr) = self.prev_instr {
|
|
self.display_instr::<()>(instr, addr);
|
|
}
|
|
self.prev_instr = hbbytecode::Instr::try_from(*(addr.get() as *const u8)).ok();
|
|
} else {
|
|
let instr = self.prev_instr.take().unwrap();
|
|
self.display_instr::<T>(instr, addr);
|
|
}
|
|
}
|
|
|
|
self.mem.prog_read(addr)
|
|
}
|
|
}
|
|
|
|
fn endoce_string(
|
|
literal: &str,
|
|
str: &mut Vec<u8>,
|
|
report: impl Fn(&core::str::Bytes, &str),
|
|
) -> Option<()> {
|
|
let report = |bytes: &core::str::Bytes, msg: &_| {
|
|
report(bytes, msg);
|
|
None::<u8>
|
|
};
|
|
|
|
let decode_braces = |str: &mut Vec<u8>, bytes: &mut core::str::Bytes| {
|
|
while let Some(b) = bytes.next()
|
|
&& b != b'}'
|
|
{
|
|
let c = bytes.next().or_else(|| report(bytes, "incomplete escape sequence"))?;
|
|
let decode = |b: u8| {
|
|
Some(match b {
|
|
b'0'..=b'9' => b - b'0',
|
|
b'a'..=b'f' => b - b'a' + 10,
|
|
b'A'..=b'F' => b - b'A' + 10,
|
|
_ => report(bytes, "expected hex digit or '}'")?,
|
|
})
|
|
};
|
|
str.push(decode(b)? << 4 | decode(c)?);
|
|
}
|
|
|
|
Some(())
|
|
};
|
|
|
|
let mut bytes = literal.bytes();
|
|
while let Some(b) = bytes.next() {
|
|
if b != b'\\' {
|
|
str.push(b);
|
|
continue;
|
|
}
|
|
let b = match bytes.next().or_else(|| report(&bytes, "incomplete escape sequence"))? {
|
|
b'n' => b'\n',
|
|
b'r' => b'\r',
|
|
b't' => b'\t',
|
|
b'\\' => b'\\',
|
|
b'\'' => b'\'',
|
|
b'"' => b'"',
|
|
b'0' => b'\0',
|
|
b'{' => {
|
|
decode_braces(str, &mut bytes);
|
|
continue;
|
|
}
|
|
_ => report(&bytes, "unknown escape sequence, expected [nrt\\\"'{0]")?,
|
|
};
|
|
str.push(b);
|
|
}
|
|
|
|
if str.last() != Some(&0) {
|
|
report(&bytes, "string literal must end with null byte (for now)");
|
|
}
|
|
|
|
Some(())
|
|
}
|
|
|
|
struct AsHex<'a>(&'a [u8]);
|
|
|
|
impl core::fmt::Display for AsHex<'_> {
|
|
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
|
|
for &b in self.0 {
|
|
write!(f, "{b:02x}")?;
|
|
}
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
pub fn quad_sort<T>(mut slice: &mut [T], mut cmp: impl FnMut(&T, &T) -> core::cmp::Ordering) {
|
|
while let Some(it) = slice.take_first_mut() {
|
|
for ot in &mut *slice {
|
|
if cmp(it, ot) == core::cmp::Ordering::Greater {
|
|
core::mem::swap(it, ot);
|
|
}
|
|
}
|
|
}
|
|
debug_assert!(slice.is_sorted_by(|a, b| cmp(a, b) != core::cmp::Ordering::Greater));
|
|
}
|