⚠️ VeridianOS Kernel Documentation - This is low-level kernel code. All functions are unsafe unless explicitly marked otherwise. no_std

PerCpuData

veridian_kernel::arch::x86_64::syscall

Struct PerCpuData 

Source 
#[repr(C)]
pub struct PerCpuData {
    pub kernel_rsp: u64,
    pub user_rsp: u64,
}
Expand description

Per-CPU data accessed via GS segment register during syscall entry/exit.

The syscall_entry naked asm reads kernel_rsp from gs:[0x0] and saves user_rsp to gs:[0x8]. This struct must be #[repr(C)] to guarantee field layout matches the assembly offsets.

Fields§

§kernel_rsp: u64

Kernel stack pointer (offset 0x0) – loaded into RSP on syscall entry

§user_rsp: u64

User stack pointer (offset 0x8) – saved from RSP on syscall entry

Auto Trait Implementations§

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impl Freeze for PerCpuData

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impl RefUnwindSafe for PerCpuData

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impl Send for PerCpuData

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impl Sync for PerCpuData

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impl Unpin for PerCpuData

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impl UnwindSafe for PerCpuData

Blanket Implementations§

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

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

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fn borrow(&self) -> &T

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

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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
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type Error = Infallible

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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>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.