Public Types
using	size_type = uint16_t

using	integer_pointer = uintptr_t

using	interrupt_descriptor_type = uint64_t

Public Member Functions
	idt_x64 () noexcept

	idt_x64 (size_type size) noexcept

	~idt_x64 ()=default

auto	base () const

auto	limit () const

Detailed Description

Interrupt Descriptor Table

The interrupt descriptor tables is like the GDT. Each descriptor in 64bit mode is 16 bytes with the upper 64bits containing the upper 32bit offset (like like a TSS descriptor). Unlike the GDT, entry 0 is used, and there "should be" 256 entries, which means it consumes 4k. We left the implementation in a way where you can decide how big you want it, but it really should be 256.

For more information on the IDT, please see Volume 3, section 6.10 of the Intel Manual. For 64bit, see section 6.14.

Note: For now, the IDT is global, and blank as we have interrupts disabled. At some point when we decide to add support for interrupts we will need to implement this class completely.

Definition at line 154 of file idt_x64.h.

Member Typedef Documentation

◆ size_type

using idt_x64::size_type = uint16_t

Definition at line 158 of file idt_x64.h.

◆ integer_pointer

using idt_x64::integer_pointer = uintptr_t

Definition at line 159 of file idt_x64.h.

◆ interrupt_descriptor_type

using idt_x64::interrupt_descriptor_type = uint64_t

Definition at line 160 of file idt_x64.h.

Constructor & Destructor Documentation

◆ idt_x64() [1/2]

idt_x64::idt_x64 ( )

inlinenoexcept

Constructor

Wraps around the IDT that is currently stored in the hardware.

Precondition: expects: none

Postcondition: ensures: none

Definition at line 169 of file idt_x64.h.

◆ idt_x64() [2/2]

idt_x64::idt_x64 ( size_type size )

inlinenoexcept

Constructor

Creates a new IDT, with size defining the number of descriptors in the IDT.

Precondition: expects: size != 0

Postcondition: ensures: none

Parameters

size	number of entries in the IDT

Definition at line 188 of file idt_x64.h.

◆ ~idt_x64()

idt_x64::~idt_x64 ( )

default

Destructor

Precondition: expects: none

Postcondition: ensures: none

Member Function Documentation

◆ base()

auto idt_x64::base ( ) const

inline

IDT Base Address

Precondition: expects: none

Postcondition: ensures: none

Returns: returns the base address of the IDT itself.

Definition at line 212 of file idt_x64.h.

◆ limit()

auto idt_x64::limit ( ) const