ostd::arch::trap

Struct RawUserContext

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#[repr(C)]
pub(super) struct RawUserContext {
    pub(super) general: GeneralRegs,
    pub(super) trap_num: usize,
    pub(super) error_code: usize,
}
Expand description

Userspace context.

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§general: GeneralRegs§trap_num: usize§error_code: usize

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impl RawUserContext

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pub(in arch) fn run( &mut self, )

Goes to user space with the context, and comes back when a trap occurs.

On return, the context will be reset to the status before the trap. Trap reason and error code will be placed at trap_num and error_code.

If the trap was triggered by syscall instruction, the trap_num will be set to 0x100.

If trap_num is 0x100, it will go user by sysret (rcx and r11 are dropped), otherwise it will use iret.

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impl Clone for RawUserContext

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fn clone(&self) -> RawUserContext

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for RawUserContext

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

Formats the value using the given formatter. Read more
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impl Default for RawUserContext

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fn default() -> RawUserContext

Returns the “default value” for a type. Read more
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impl PartialEq for RawUserContext

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fn eq(&self, other: &RawUserContext) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for RawUserContext

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impl Eq for RawUserContext

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impl StructuralPartialEq for RawUserContext

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impl<T> Any for T
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fn borrow_mut(&mut self) -> &mut T

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impl<T> CloneToUninit for T
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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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where Self: Binary,

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where Self: LowerExp,

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where Self: LowerHex,

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where Self: Octal,

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where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn from(t: T) -> T

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Mutably borrows self, then passes self.deref_mut() into the pipe function.
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type Metadata = ()

The metadata type for pointers and references to this type.
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impl<T> SingleInstructionLoad for T
where T: Copy,

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default unsafe fn load(offset: *const T) -> T

Gets the value of the per-CPU object. Read more
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impl<T> SingleInstructionStore for T
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default unsafe fn store(offset: *mut T, val: T)

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fn tap(self, func: impl FnOnce(&Self)) -> Self

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where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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where Self: DerefMut<Target = T> + Deref, T: ?Sized,

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type Owned = T

The resulting type after obtaining ownership.
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