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syscalls: begin to implement syscalls

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2020-01-09 11:03:29 +08:00
parent c24f46c96b
commit d370164a28
1 changed files with 28 additions and 10 deletions
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30
src/syscalls.rs
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@ -1,5 +1,18 @@
use super::definitions::*;
/// Claims an interrupt and unmasks it immediately. The provided function will
/// be called from within an interrupt context, but using the ordinary privilege level of
/// the process.
///
/// # Errors
///
/// * **InterruptNotFound**: The specified interrupt isn't valid on this system
/// * **InterruptInUse**: The specified interrupt has already been claimed
#[allow(dead_code)]
pub fn sys_interrupt_claim(irq: usize, f: fn(usize)) -> Result<(), XousError> {
crate::irq::sys_interrupt_claim(irq, f)
}
extern "Rust" {
/// Allocates kernel structures for a new process, and returns the new PID.
/// This removes `page_count` page tables from the calling process at `origin_address`
@ -33,16 +46,21 @@ extern "Rust" {
#[allow(dead_code)]
pub fn sysi_process_suspend(pid: XousPid, cpu_id: XousCpuId) -> Result<(), XousError>;
/// Claims an interrupt and unmasks it immediately. The provided function will
/// be called from within an interrupt context, but using the ordinary privilege level of
/// the process.
/// Locks the system by disabling interrupts.
///
/// # Errors
///
/// * **InterruptNotFound**: The specified interrupt isn't valid on this system
/// * **InterruptInUse**: The specified interrupt has already been claimed
/// * **InterruptNotFound**: The system is not currently executing an interrupt.
#[allow(dead_code)]
pub fn sys_interrupt_claim(irq: usize, f: fn(usize)) -> Result<(), XousError>;
pub fn sys_lock() -> Result<(), XousError>;
/// Unlocks the system by enabling interrupts
///
/// # Errors
///
/// * **InterruptNotFound**: The system is not currently locked.
#[allow(dead_code)]
pub fn sys_unlock() -> Result<(), XousError>;
/// Returns the interrupt back to the operating system and masks it again.
/// This function is implicitly called when a process exits.