Struct x86_64::structures::idt::EntryOptions [−][src]
#[repr(transparent)]pub struct EntryOptions(_);
Represents the options field of an IDT entry.
Methods
impl EntryOptions
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impl EntryOptions
pub fn set_present(&mut self, present: bool) -> &mut Self
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pub fn set_present(&mut self, present: bool) -> &mut Self
Set or reset the preset bit.
pub fn disable_interrupts(&mut self, disable: bool) -> &mut Self
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pub fn disable_interrupts(&mut self, disable: bool) -> &mut Self
Let the CPU disable hardware interrupts when the handler is invoked. By default, interrupts are disabled on handler invocation.
pub fn set_privilege_level(&mut self, dpl: PrivilegeLevel) -> &mut Self
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pub fn set_privilege_level(&mut self, dpl: PrivilegeLevel) -> &mut Self
Set the required privilege level (DPL) for invoking the handler. The DPL can be 0, 1, 2, or 3, the default is 0. If CPL < DPL, a general protection fault occurs.
This function panics for a DPL > 3.
pub unsafe fn set_stack_index(&mut self, index: u16) -> &mut Self
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pub unsafe fn set_stack_index(&mut self, index: u16) -> &mut Self
Assigns a Interrupt Stack Table (IST) stack to this handler. The CPU will then always switch to the specified stack before the handler is invoked. This allows kernels to recover from corrupt stack pointers (e.g., on kernel stack overflow).
An IST stack is specified by an IST index between 0 and 6 (inclusive). Using the same stack for multiple interrupts can be dangerous when nested interrupts are possible.
This function panics if the index is not in the range 0..7.
Safety
This function is unsafe because the caller must ensure that the passed stack index is valid and not used by other interrupts. Otherwise, memory safety violations are possible.
Trait Implementations
impl Debug for EntryOptions
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impl Debug for EntryOptions
fn fmt(&self, f: &mut Formatter) -> Result
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fn fmt(&self, f: &mut Formatter) -> Result
Formats the value using the given formatter. Read more
impl Clone for EntryOptions
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impl Clone for EntryOptions
fn clone(&self) -> EntryOptions
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fn clone(&self) -> EntryOptions
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl Copy for EntryOptions
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impl Copy for EntryOptions
Auto Trait Implementations
impl Send for EntryOptions
impl Send for EntryOptions
impl Sync for EntryOptions
impl Sync for EntryOptions