Struct os::trap::TrapContext

#[repr(C)]
pub struct TrapContext {
    pub x: [usize; 32],
    pub sstatus: Sstatus,
    pub sepc: usize,
    pub kernel_satp: usize,
    pub kernel_sp: usize,
    pub trap_handler: usize,
}

trap context structure containing sstatus, sepc and registers

Fields

x: [usize; 32]

General-Purpose Register x0-31

sstatus: Sstatus

Supervisor Status Register

sepc: usize

Supervisor Exception Program Counter

kernel_satp: usize

Token of kernel address space

kernel_sp: usize

Kernel stack pointer of the current application

trap_handler: usize

Virtual address of trap handler entry point in kernel

Implementations

impl TrapContext

pub fn set_sp(&mut self, sp: usize)

put the sp(stack pointer) into x[2] field of TrapContext

pub fn app_init_context( entry: usize, sp: usize, kernel_satp: usize, kernel_sp: usize, trap_handler: usize ) -> Self

init the trap context of an application

Trait Implementations

impl Debug for TrapContext

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.