# Struct os::task::context::TaskContext

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

Expand description

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

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### impl TaskContext

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#### pub fn zero_init() -> Self

init task context

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#### pub fn goto_trap_return(kstack_ptr: usize) -> Self

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

## Auto Trait Implementations

### impl RefUnwindSafe for TaskContext

### impl Send for TaskContext

### impl Sync for TaskContext

### impl Unpin for TaskContext

### impl UnwindSafe for TaskContext

## Blanket Implementations

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

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

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

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

const: unstable · source

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

Immutably borrows from an owned value. Read more

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### 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

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

const: unstable · source

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

Returns the argument unchanged.

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### 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.

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### 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.

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### 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.