# Struct os::trap::TrapContext

source · [−]

    #[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,
    }

Expand description

trap context structure containing sstatus, sepc and registers

## Fields

`x: [usize; 32]`

general regs[0..31]

`sstatus: Sstatus`

CSR sstatus

`sepc: usize`

CSR sepc

`kernel_satp: usize`

Addr of Page Table

`kernel_sp: usize`

kernel stack

`trap_handler: usize`

Addr of trap_handler function

## Implementations

source

### impl TrapContext

source

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

set stack pointer to x_2 reg (sp)

source

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

init app context

## Auto Trait Implementations

### impl RefUnwindSafe for TrapContext

### impl Send for TrapContext

### impl Sync for TrapContext

### impl Unpin for TrapContext

### impl UnwindSafe for TrapContext

## Blanket Implementations

source

### impl<T> Any for T where
T: 'static + ?Sized,

source

#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more

source

### impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

### impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

source

### impl<T> From<T> for T

const: unstable · source

#### fn from(t: T) -> T

Returns the argument unchanged.

source

### impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

source

### impl<T, U> TryFrom<U> for T where
U: Into<T>,

#### type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

source

### impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.