forked from AbleOS/ableos
fix up wasm-sys and implement experimental futex
This commit is contained in:
parent
e43891ce9f
commit
6d31f4db29
2
ableos/Cargo.lock
generated
2
ableos/Cargo.lock
generated
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@ -59,7 +59,7 @@ checksum = "9ea835d29036a4087793836fa931b08837ad5e957da9e23886b29586fb9b6650"
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[[package]]
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name = "externc-libm"
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version = "0.1.0"
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source = "git+https://github.com/HaruxOS/externc-libm#ad2865a706fd46d829550ed4cdfa4126f2c81e19"
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source = "git+ssh://root@git.ablecorp.us:20/able/externc-libm.git#0781df85c094bcd7e5ef7505e9c5cc6317eeda75"
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dependencies = [
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"libm",
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]
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@ -41,7 +41,7 @@ features = ["spin_no_std"]
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version = "1.0"
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[dependencies.externc-libm]
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git = "https://github.com/HaruxOS/externc-libm"
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git = "ssh://root@git.ablecorp.us:20/able/externc-libm.git"
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[target.'cfg(target_arch = "x86_64")'.dependencies]
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bootloader = { version = "0.9.8", features = ["map_physical_memory"] }
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0
ableos/notes/mouse.md
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0
ableos/notes/mouse.md
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@ -1,6 +1,15 @@
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pub enum PS2MouseButton {
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LeftMB,
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RightMB,
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// TODO: Bitmasking
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pub enum Mouse {
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Button1,
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Button2,
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Button3,
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Button4,
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Button5,
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X(i8),
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Y(i8),
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Wheel(i8),
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}
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pub trait PS2Mouse {
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66
ableos/src/experiments/futex.rs
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66
ableos/src/experiments/futex.rs
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@ -0,0 +1,66 @@
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use core::time::Duration;
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use alloc::vec::Vec;
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use crate::scheduler::ThreadID;
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// pub struct Duration {}
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pub struct AtomicU32(u32);
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impl AtomicU32 {
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//if v != current value
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pub fn wait(&self, _v: u32) {
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todo!();
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}
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pub fn wait_timeout(&self, _v: u32, _timeout: Duration) -> bool {
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todo!();
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}
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pub fn wake_single(&self) {
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todo!();
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}
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pub fn wake_all(&self) {
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todo!();
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}
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}
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/*
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SUPER HANDWAVEY
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YOU WILL NEED LOCKING THAT I DIDNT WRITE OUT (you == zuurr#9735)
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// all the red is by design
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pub fn futex_wait(atom: &AtomicU32, value: usize, current_thread: ThreadID) {
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let address = atomic as *const _ as usize;
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let waiters = waiters_for(address); // Hold lock
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waiters.add(current_thread);
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if self.load() == value {
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current_thread.sleep();
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} else {
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waiters.remove(current_thread);
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}
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}
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pub fn futex_wake(atom: &AtomicU32, threads_to_wake: usize) {
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let address = atomic as *const _ as usize;
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let waiters = waiters_for(address);
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for waiting_thread in waiters.into_iter().take(threads_to_wake) {
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waiting_thread.wake()
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}
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}
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*/
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struct FutexWaitlist {
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address: u8,
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data: Vec<ThreadID>,
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}
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impl FutexWaitlist {
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pub fn remove(&mut self) {
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todo!();
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}
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pub fn add(&mut self) {
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todo!();
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}
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}
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@ -10,5 +10,6 @@ pub mod virtual_memory;
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pub mod kinfo;
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pub mod mail;
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pub mod futex;
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pub mod info;
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pub const BANNER: &str = include_str!("banner.txt");
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@ -2,114 +2,116 @@ use alloc::string::String;
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use wasmi::TrapKind;
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use {
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alloc::format,
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wasm_sys::SysCall,
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wasmi::{
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Error, Externals, FuncInstance, FuncRef, ImportsBuilder, ModuleImportResolver,
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ModuleInstance, RuntimeArgs, RuntimeValue, Signature, Trap, ValueType,
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},
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alloc::format,
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wasm_sys::SysCall,
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wasmi::{
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Error, Externals, FuncInstance, FuncRef, ImportsBuilder, ModuleImportResolver,
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ModuleInstance, RuntimeArgs, RuntimeValue, Signature, Trap, ValueType,
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},
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};
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mod wasm_sys;
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struct HostFunctions;
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impl HostFunctions {
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fn check_signature(&self, index: usize, signature: &Signature) -> bool {
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let (params, ret_ty): (&[ValueType], Option<ValueType>) = match index.into() {
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SysCall::KILL => (&[], None),
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SysCall::EMPTY => (&[], None),
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_ => return false,
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};
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signature.params() == params && signature.return_type() == ret_ty
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}
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fn check_signature(&self, index: usize, signature: &Signature) -> bool {
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let (params, ret_ty): (&[ValueType], Option<ValueType>) = match index.into() {
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SysCall::KILL => (&[], None),
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SysCall::EMPTY => (&[], None),
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_ => return false,
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};
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signature.params() == params && signature.return_type() == ret_ty
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}
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}
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impl Externals for HostFunctions {
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fn invoke_index(
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&mut self,
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index: usize,
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args: RuntimeArgs,
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) -> Result<Option<RuntimeValue>, Trap> {
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match index.into() {
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// Take in one arg discard the rest
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SysCall::KILL => {
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info!("Program run at runtime called a system call");
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debug!("Runtime arguments: {:?}", args);
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Ok(None)
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}
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// Do nothing
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SysCall::EMPTY => Ok(None),
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SysCall::EXIT => Ok(None),
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SysCall::CONSOLE_RESET => Ok(None),
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SysCall::CONSOLE_IN => {
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info!("In");
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Ok(None)
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}
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fn invoke_index(
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&mut self,
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index: usize,
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args: RuntimeArgs,
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) -> Result<Option<RuntimeValue>, Trap> {
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match index.into() {
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// Take in one arg discard the rest
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SysCall::KILL => {
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info!("Program run at runtime called a system call");
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debug!("Runtime arguments: {:?}", args);
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Ok(None)
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}
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// Do nothing
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SysCall::EMPTY => Ok(None),
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SysCall::EXIT => Ok(None),
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SysCall::CONSOLE_RESET => Ok(None),
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SysCall::CONSOLE_IN => {
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info!("In");
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Ok(None)
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}
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SysCall::CONSOLE_OUT => {
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// Eventually change this to 2- ptr and len
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if args.len() != 1 {
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return Err(Trap::new(TrapKind::UnexpectedSignature));
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}
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let arg: u64 = args.nth(0);
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let buf = unsafe { String::from_utf8_unchecked(arg.to_le_bytes().to_vec()) };
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println!["{}", buf];
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Ok(None)
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}
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SysCall::CONSOLE_GET_TITLE => Ok(None),
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SysCall::CONSOLE_SET_TITLE => Ok(None),
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_ => panic!("Unimplemented function at {}", index),
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}
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}
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SysCall::CONSOLE_OUT => {
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// Eventually change this to 2- ptr and len
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if args.len() != 1 {
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return Err(Trap::new(TrapKind::UnexpectedSignature));
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}
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let arg: u64 = args.nth(0);
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let buf = unsafe { String::from_utf8_unchecked(arg.to_le_bytes().to_vec()) };
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println!["helllooooooo{}", buf];
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Ok(None)
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}
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SysCall::CONSOLE_GET_TITLE => Ok(None),
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SysCall::CONSOLE_SET_TITLE => Ok(None),
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_ => panic!("Unimplemented function at {}", index),
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}
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}
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}
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impl ModuleImportResolver for HostFunctions {
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fn resolve_func(&self, field_name: &str, signature: &Signature) -> Result<FuncRef, Error> {
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let index = match field_name {
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"kill" => SysCall::KILL as usize,
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"empty" => SysCall::EMPTY as usize,
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"exit" => SysCall::EXIT as usize,
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_ => {
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return Err(Error::Instantiation(format!(
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"Export {} not found",
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field_name
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)))
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}
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};
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fn resolve_func(&self, field_name: &str, signature: &Signature) -> Result<FuncRef, Error> {
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let index = match field_name {
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"kill" => SysCall::KILL as usize,
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"empty" => SysCall::EMPTY as usize,
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"exit" => SysCall::EXIT as usize,
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"console_out" => SysCall::CONSOLE_OUT as usize,
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_ => {
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return Err(Error::Instantiation(format!(
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"Export {} not found",
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field_name
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)))
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}
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};
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if !self.check_signature(index, signature) {
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return Err(Error::Instantiation(format!(
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"Export {} has a bad signature",
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field_name
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)));
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}
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if !self.check_signature(index, signature) {
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return Err(Error::Instantiation(format!(
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"Export {} has a bad signature",
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field_name
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)));
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}
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Ok(FuncInstance::alloc_host(
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Signature::new(&[][..], None),
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index,
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))
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}
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Ok(FuncInstance::alloc_host(
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Signature::new(&[][..], None),
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index,
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))
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}
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}
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pub fn evaluate() {
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let wasm_binary = include_bytes!("bin/rust.wasm");
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let wasm_binary = include_bytes!("bin/console_out_test.wasm");
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// Load wasm binary and prepare it for instantiation.
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let module = wasmi::Module::from_buffer(&wasm_binary).expect("failed to load wasm");
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// Load wasm binary and prepare it for instantiation.
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let module = wasmi::Module::from_buffer(&wasm_binary).expect("failed to load wasm");
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let imports = ImportsBuilder::new().with_resolver("env", &HostFunctions);
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let imports = ImportsBuilder::new().with_resolver("env", &HostFunctions);
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// Instantiate a module with empty imports and
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// assert that there is no `start` function.
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let instance = ModuleInstance::new(&module, &imports)
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.expect("failed to instantiate wasm module")
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.assert_no_start();
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// Instantiate a module with empty imports and
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// assert that there is no `start` function.
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let instance = ModuleInstance::new(&module, &imports)
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// .expect("failed to instantiate wasm module")
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.unwrap()
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.assert_no_start();
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// Finally, invoke the exported function "test" with no parameters
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// and empty external function executor.
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let result: i32 = instance
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.invoke_export("_start", &[], &mut HostFunctions)
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.expect("failed to execute export")
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.unwrap()
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.try_into()
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.unwrap();
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// Finally, invoke the exported function "test" with no parameters
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// and empty external function executor.
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let result: i32 = instance
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.invoke_export("_start", &[], &mut HostFunctions)
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.expect("failed to execute export")
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.unwrap()
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.try_into()
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.unwrap();
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println!("{:?}", result);
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println!("{:?}", result);
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}
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