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5
Cargo.toml
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5
Cargo.toml
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[workspace]
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members = [
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"libwasm",
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]
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8
libwasm/Cargo.toml
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8
libwasm/Cargo.toml
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[package]
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name = "libwasm"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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4
libwasm/src/driver.rs
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4
libwasm/src/driver.rs
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pub enum DriverExitCode {
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Success = 0,
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Failure = 1,
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}
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13
libwasm/src/lib.rs
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13
libwasm/src/lib.rs
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#![no_std]
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#[macro_use]
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pub mod logger;
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pub mod driver;
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pub mod process;
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pub mod syscalls;
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pub use core::*;
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extern "C" {
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pub fn get_random() -> u32;
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}
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68
libwasm/src/logger/mod.rs
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68
libwasm/src/logger/mod.rs
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#![allow(unused_macros)]
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#[repr(C)]
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pub enum LogLevel {
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Error,
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Warn,
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Info,
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Debug,
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Trace,
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}
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extern "C" {
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pub fn host_log(log_level: LogLevel, log_message: *const u8, log_message_len: u32);
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}
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#[macro_export]
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macro_rules! log {
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($a:expr, $b:expr) => {{
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let log_level: LogLevel = $a;
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let log_message: &[u8] = $b;
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let pointer = log_message.as_ptr();
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unsafe {
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$crate::logger::host_log(log_level, pointer, log_message.len() as u32);
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}
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}};
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}
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#[macro_export]
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macro_rules! debug {
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($a:expr) => {
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use crate::logger::{LogLevel::*, *};
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log!(Debug, $a);
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};
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}
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#[macro_export]
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macro_rules! error {
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($a:expr) => {
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use crate::logger::{LogLevel::*, *};
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log!(Error, $a);
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};
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}
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#[macro_export]
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macro_rules! trace {
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($a:expr) => {
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use crate::logger::*;
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log!(Trace, $a);
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};
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}
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#[macro_export]
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macro_rules! warn {
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($a:expr) => {
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use crate::logger::{LogLevel::*, *};
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log!(Warn, $a);
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};
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}
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#[macro_export]
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macro_rules! info {
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($a:expr) => {
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use crate::logger::{LogLevel::*, *};
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log!(Info, $a);
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};
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}
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6
libwasm/src/process/mod.rs
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6
libwasm/src/process/mod.rs
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pub mod signals;
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/// Process Identification
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#[derive(Clone, Copy, PartialEq, Debug)]
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#[repr(C)]
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pub struct PID(pub usize);
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libwasm/src/process/signals.rs
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8
libwasm/src/process/signals.rs
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#[repr(C)]
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/// Signals that can be sent to a process
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pub enum Signals {
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/// Terminate the process
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Terminate,
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/// Shutdown the process and allow it to shutdown cleanly
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Quit,
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}
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43
libwasm/src/syscalls/file_calls.rs
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43
libwasm/src/syscalls/file_calls.rs
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//! File system related system calls.
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/// Temporary representation of a file path
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pub type Path = *const u8;
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/// Remove a Directory from the filesystem
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///
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/// # Arguments
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/// * `full_path` - The full path of the directory to remove
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/// * `force` - Whether to remove the directory even if it is not empty
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#[no_mangle]
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pub extern "C" fn remove_directory(path: Path, force_delete: bool) {
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unimplemented!();
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}
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/// Create a new directory at the given path
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///
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/// # Arguments
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/// * `full_path` - The full path of the directory to create
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#[no_mangle]
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pub extern "C" fn create_directory(path: Path) -> FSReturns {
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unimplemented!();
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}
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#[repr(C)]
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/// A return used by the file related system calls
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pub enum FSReturns {
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/// The system call was successful
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Ok,
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/// The directory can not be created
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DirectoryCouldNotBeCreated,
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/// The directory could not be removed
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DirectoryCouldNotBeRemoved,
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///
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FileCouldNotBeCreated,
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///
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FileCouldNotBeRemoved,
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/// The file could not be opened
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FileCouldNotBeOpened,
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///
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FileCouldNotBeClosed,
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}
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24
libwasm/src/syscalls/mod.rs
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24
libwasm/src/syscalls/mod.rs
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#![deny(missing_docs)]
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//! The module of syscalls.
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use crate::process::{signals::Signals, PID};
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pub mod file_calls;
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pub mod time_calls;
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#[no_mangle]
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/// All system calls are defined here.
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extern "C" {
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/// Send a signal to a process
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///
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/// # Arguments
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///
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/// * `pid` - The PID of the process to send the signal to
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/// * `signal` - The signal to send
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pub fn send_signal(pid: PID, signal: Signals) -> bool;
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/// A temporary function to test the syscall interface
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pub fn add(a: u32, b: u32) -> u32;
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}
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24
libwasm/src/syscalls/time_calls.rs
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24
libwasm/src/syscalls/time_calls.rs
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//! Time related system calls.
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/// Seconds and milliseconds since the Unix epoch.
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#[repr(C)]
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#[derive(Debug)]
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pub struct SecondsTime {
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/// Seconds
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pub seconds: u64,
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/// Milliseconds
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pub milliseconds: u64,
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}
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extern "C" {
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/// Sleep the calling process for the given number of milliseconds
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pub fn sleep(time: SecondsTime);
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/// Get the current time in seconds, milliseconds
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///
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/// Temporarily returns an i32 instead of a SecondsTime
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pub fn get_time() -> i32;
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/// Set the current time in seconds, milliseconds
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pub fn set_time(time: SecondsTime);
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}
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