tg-syscall

System call definitions and interfaces for the rCore tutorial operating system.

Overview

This crate provides system call number definitions and a framework for implementing system calls in the rCore tutorial kernel. System call numbers are generated from Musl Libc for RISC-V source code.

Features

• System call number definitions: Generated from Musl Libc for RISC-V
• Syscall framework: Trait-based system call implementation
• User and kernel modes: Separate features for user-space and kernel-space usage
• no_std compatible: Designed for bare-metal environments

Usage

Kernel side (with kernel feature)

use tg_syscall::{Caller, SyscallId, SyscallResult};

// Initialize syscall handlers
tg_syscall::init_io(&my_io_impl);
tg_syscall::init_process(&my_process_impl);
tg_syscall::init_scheduling(&my_sched_impl);

// Handle syscalls
let result = tg_syscall::handle(caller, id, args);

User side (with user feature)

use tg_syscall::{write, read, exit};

// Make system calls
write(STDOUT, buffer);
exit(0);

Features

• kernel - Enable kernel-side syscall handling interfaces
• user - Enable user-space syscall wrappers

Supported System Calls

Standard POSIX-compatible system calls including:

• I/O: read, write, open, close
• Process: fork, exec, exit, wait, getpid
• Signal: kill, sigaction, sigprocmask, sigreturn
• Thread: thread_create, gettid, waittid
• Scheduling: sched_yield
• Time: clock_gettime
• Synchronization: semaphore_*, mutex_*, condvar_*

License

Licensed under either of MIT license or Apache License, Version 2.0 at your option.