idt.h File Reference

#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	idt_desc
struct	idtr_desc
struct	interrupt_frame

Macros
#define	MAX_INTERRUPTS   256

Typedefs
typedef void(*	ISR_HANDLER) (int int_no, struct interrupt_frame *frame)

Functions
struct idt_desc	__attribute__ ((packed))
void	idt_Init ()
	Initializes memory for IDT struct Sets default for all interrupts.
void	idt_SetDescriptor (int int_no, void *address)
	Fills entry in IDT for specified Interrupt number Use before idt_Load().
int	idt_SetHandler (int int_no, ISR_HANDLER handler)
	Sets handler for given interrupt number.
void	idt_Load ()
	Loads Interrupt Descriptor Table.

Variables
uint16_t	offset_low
uint16_t	selector
uint8_t	zero
uint8_t	type_attr
uint16_t	offset_high
uint16_t	limit
uint32_t	base
uint32_t	error_code
uint32_t	edi
uint32_t	esi
uint32_t	ebp
uint32_t	reserved
uint32_t	ebx
uint32_t	edx
uint32_t	ecx
uint32_t	eax
uint32_t	ip
uint32_t	cs
uint32_t	flags
uint32_t	esp
uint32_t	ss
const char *	idt_InterruptLayoutString [32]

Macro Definition Documentation

MAX_INTERRUPTS

#define MAX_INTERRUPTS   256

Typedef Documentation

ISR_HANDLER

typedef void(* ISR_HANDLER) (int int_no, struct interrupt_frame *frame)

Function Documentation

__attribute__()

struct idt_desc __attribute__

(

(packed)

)

idt_Init()

void idt_Init

(

)

Initializes memory for IDT struct Sets default for all interrupts.

References idt_descriptors, idt_SetDescriptor(), idtr_descriptor, interrupt_pointer_table, MAX_INTERRUPTS, and memset().

idt_Load()

void idt_Load

(

)

Loads Interrupt Descriptor Table.

References idtr_descriptor.

idt_SetDescriptor()

void idt_SetDescriptor	(	int	int_no,
		void *	address )

Fills entry in IDT for specified Interrupt number Use before idt_Load().

Parameters

int_no	Interrupt number
address	Pointer to interrupt handler

References idt_descriptors, idt_desc::offset_high, idt_desc::offset_low, idt_desc::selector, idt_desc::type_attr, and idt_desc::zero.

idt_SetHandler()

int idt_SetHandler	(	int	int_no,
		ISR_HANDLER	handler )

Sets handler for given interrupt number.

Parameters

int_no	Interrupt number
handler	Handler function

Returns

int Error code

References ALL_OK, EINVARG, interrupt_handlers, and MAX_INTERRUPTS.

Variable Documentation

base

uint32_t base

cs

uint32_t cs

eax

uint32_t eax

ebp

uint32_t ebp

ebx

uint32_t ebx

ecx

uint32_t ecx

edi

uint32_t edi

edx

uint32_t edx

error_code

uint32_t error_code

esi

uint32_t esi

esp

uint32_t esp

flags

uint32_t flags

idt_InterruptLayoutString

const char* idt_InterruptLayoutString[32]

extern

ip

uint32_t ip

limit

uint16_t limit

offset_high

uint16_t offset_high

offset_low

uint16_t offset_low

reserved

uint32_t reserved

selector

uint16_t selector

ss

uint32_t ss

type_attr

uint8_t type_attr

zero

uint8_t zero