Removed old text module

This commit is contained in:
Erin 2023-07-12 02:15:14 +02:00 committed by ondra05
parent c648bf0b24
commit e5f50c7b6c
3 changed files with 6 additions and 291 deletions

View file

@ -1,15 +1,10 @@
#![no_std]
#![feature(error_in_core)]
use lasso::Key;
extern crate alloc;
pub mod text_r;
mod macros;
use {alloc::vec::Vec, hashbrown::HashSet, lasso::Spur};
use {alloc::vec::Vec, hashbrown::HashSet};
#[derive(Default)]
pub struct Assembler {
@ -53,13 +48,3 @@ macro_rules! impl_imm_le_bytes {
}
impl_imm_le_bytes!(u64, i64, f64);
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
struct Symbol(pub Spur);
impl Imm for Symbol {
#[inline(always)]
fn insert(&self, asm: &mut Assembler) {
asm.sub.insert(asm.buf.len());
asm.buf.extend((self.0.into_usize() as u64).to_le_bytes());
}
}

View file

@ -151,7 +151,10 @@ macro_rules! gen_text {
fn insert(&self, asm: &mut Assembler) {
match self {
Self::Const(a) => a.insert(asm),
Self::Named(a) => $crate::Symbol(*a).insert(asm),
Self::Named(a) => {
asm.sub.insert(asm.buf.len());
asm.buf.extend((a.into_usize() as u64).to_le_bytes());
},
}
}
}
@ -162,7 +165,7 @@ macro_rules! gen_text {
macro_rules! extract_pat {
($self:expr, $pat:pat) => {
let $pat = $self.next()?
else { return Err(ErrorKind::UnexpectedToken) };
else { return Err(ErrorKind::UnexpectedToken) };
};
}

View file

@ -1,273 +0,0 @@
extern crate alloc;
use alloc::vec::Vec;
use {
core::fmt::{Display, Formatter},
hashbrown::HashMap,
lasso::{Rodeo, Spur},
logos::{Lexer, Logos, Span},
};
macro_rules! tokendef {
($($opcode:literal),* $(,)?) => {
paste::paste! {
#[derive(Clone, Copy, Debug, PartialEq, Eq, Logos)]
#[logos(extras = Rodeo)]
#[logos(skip r"[ \t\f]+")]
#[logos(skip r"-- .*")]
pub enum Token {
$(#[token($opcode, |_| hbbytecode::opcode::[<$opcode:upper>])])*
OpCode(u8),
#[regex("[0-9]+", |l| l.slice().parse().ok())]
#[regex(
"-[0-9]+",
|lexer| {
Some(u64::from_ne_bytes(lexer.slice().parse::<i64>().ok()?.to_ne_bytes()))
},
)] Integer(u64),
#[regex(
"r[0-9]+",
|lexer| match lexer.slice()[1..].parse() {
Ok(n) => Some(n),
_ => None
},
)] Register(u8),
#[regex(
r"\p{XID_Start}\p{XID_Continue}*:",
|lexer| lexer.extras.get_or_intern(&lexer.slice()[..lexer.slice().len() - 1]),
)] Label(Spur),
#[regex(
r"\p{XID_Start}\p{XID_Continue}*",
|lexer| lexer.extras.get_or_intern(lexer.slice()),
)] Symbol(Spur),
#[token("\n")]
#[token(";")] ISep,
#[token(",")] PSep,
}
}
};
}
#[rustfmt::skip]
tokendef![
"nop", "add", "sub", "mul", "and", "or", "xor", "sl", "sr", "srs", "cmp", "cmpu",
"dir", "neg", "not", "addi", "muli", "andi", "ori", "xori", "sli", "sri", "srsi",
"cmpi", "cmpui", "cp", "swa", "li", "ld", "st", "bmc", "brc", "jmp", "jeq", "jne",
"jlt", "jgt", "jltu", "jgtu", "ecall", "addf", "subf", "mulf", "dirf", "fmaf", "negf",
"itf", "fti", "addfi", "mulfi",
];
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum ErrorKind {
UnexpectedToken,
InvalidToken,
UnexpectedEnd,
InvalidSymbol,
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Error {
pub kind: ErrorKind,
pub span: Span,
}
impl Display for Error {
fn fmt(&self, f: &mut Formatter<'_>) -> core::fmt::Result {
write!(f, "Error {:?} at {:?}", self.kind, self.span)
}
}
impl core::error::Error for Error {}
macro_rules! expect_matches {
($self:expr, $($pat:pat),* $(,)?) => {$(
let $pat = $self.next()?
else { return Err(ErrorKind::UnexpectedToken) };
)*}
}
pub fn assembly(code: &str, buf: &mut Vec<u8>) -> Result<(), Error> {
struct Assembler<'a> {
lexer: Lexer<'a, Token>,
buf: &'a mut Vec<u8>,
label_map: HashMap<Spur, u64>,
to_sub_label: HashMap<usize, Spur>,
}
impl<'a> Assembler<'a> {
fn next(&mut self) -> Result<Token, ErrorKind> {
match self.lexer.next() {
Some(Ok(t)) => Ok(t),
Some(Err(())) => Err(ErrorKind::InvalidToken),
None => Err(ErrorKind::UnexpectedEnd),
}
}
fn assemble(&mut self) -> Result<(), ErrorKind> {
use hbbytecode::opcode::*;
loop {
match self.lexer.next() {
Some(Ok(Token::OpCode(op))) => {
self.buf.push(op);
match op {
NOP | ECALL => Ok(()),
DIR | DIRF => {
expect_matches!(
self,
Token::Register(r0),
Token::PSep,
Token::Register(r1),
Token::PSep,
Token::Register(r2),
Token::PSep,
Token::Register(r3),
);
self.buf.extend([r0, r1, r2, r3]);
Ok(())
}
ADD..=CMPU | ADDF..=MULF => {
expect_matches!(
self,
Token::Register(r0),
Token::PSep,
Token::Register(r1),
Token::PSep,
Token::Register(r2),
);
self.buf.extend([r0, r1, r2]);
Ok(())
}
BRC => {
expect_matches!(
self,
Token::Register(r0),
Token::PSep,
Token::Register(r1),
Token::PSep,
Token::Integer(count),
);
self.buf.extend([
r0,
r1,
u8::try_from(count).map_err(|_| ErrorKind::UnexpectedToken)?,
]);
Ok(())
}
NEG..=NOT | CP..=SWA | NEGF..=FTI => {
expect_matches!(
self,
Token::Register(r0),
Token::PSep,
Token::Register(r1),
);
self.buf.extend([r0, r1]);
Ok(())
}
LI | JMP => {
expect_matches!(self, Token::Register(r0), Token::PSep);
self.buf.push(r0);
self.insert_imm()?;
Ok(())
}
ADDI..=CMPUI | BMC | JEQ..=JGTU | ADDFI..=MULFI => {
expect_matches!(
self,
Token::Register(r0),
Token::PSep,
Token::Register(r1),
Token::PSep,
);
self.buf.extend([r0, r1]);
self.insert_imm()?;
Ok(())
}
LD..=ST => {
expect_matches!(
self,
Token::Register(r0),
Token::PSep,
Token::Register(r1),
Token::PSep,
Token::Integer(offset),
Token::PSep,
Token::Integer(len),
);
self.buf.extend([r0, r1]);
self.buf.extend(offset.to_le_bytes());
self.buf.extend(
u16::try_from(len)
.map_err(|_| ErrorKind::InvalidToken)?
.to_le_bytes(),
);
Ok(())
}
_ => unreachable!(),
}?;
match self.next() {
Ok(Token::ISep) => (),
Ok(_) => return Err(ErrorKind::UnexpectedToken),
Err(ErrorKind::UnexpectedEnd) => return Ok(()),
Err(e) => return Err(e),
}
}
Some(Ok(Token::Label(lbl))) => {
self.label_map.insert(lbl, self.buf.len() as u64);
}
Some(Ok(Token::ISep)) => (),
Some(Ok(_)) => return Err(ErrorKind::UnexpectedToken),
Some(Err(())) => return Err(ErrorKind::InvalidToken),
None => return Ok(()),
}
}
}
fn link_local_syms(&mut self) -> Result<(), ErrorKind> {
for (ix, sym) in &self.to_sub_label {
self.label_map
.get(sym)
.ok_or(ErrorKind::InvalidSymbol)?
.to_le_bytes()
.iter()
.enumerate()
.for_each(|(i, b)| {
self.buf[ix + i] = *b;
});
}
Ok(())
}
fn insert_imm(&mut self) -> Result<(), ErrorKind> {
let imm = match self.next()? {
Token::Integer(i) => i.to_le_bytes(),
Token::Symbol(s) => {
self.to_sub_label.insert(self.buf.len(), s);
[0; 8]
}
_ => return Err(ErrorKind::UnexpectedToken),
};
self.buf.extend(imm);
Ok(())
}
}
let mut asm = Assembler {
lexer: Token::lexer(code),
label_map: Default::default(),
to_sub_label: Default::default(),
buf,
};
asm.assemble().map_err(|kind| Error {
kind,
span: asm.lexer.span(),
})?;
asm.link_local_syms()
.map_err(|kind| Error { kind, span: 0..0 })
}