Struct TaskContext 

#[repr(C)]
pub struct TaskContext {
    ra: usize,
    sp: usize,
    s: [usize; 12],
}

task context structure containing some registers

Fields

ra: usize

return address ( e.g. __restore ) of __switch ASM function

sp: usize

kernel stack pointer of app

s: [usize; 12]

callee saved registers: s 0..11

Implementations

impl TaskContext

pub fn zero_init() -> Self

init task context

pub fn goto_trap_return(kstack_ptr: usize) -> Self

set Task Context{__restore ASM funciton: trap_return, sp: kstack_ptr, s: s_0..12}