idt.h File Reference

#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	cpu_idt_entry
struct	cpu_idt_register
struct	cpu_idt_iframe
struct	cpu_idt_interrupt_state

Macros
#define	IDT_PRESENT   0x80
#define	IDT_RING_0   0x00
#define	IDT_RING_1   0x20
#define	IDT_RING_2   0x40
#define	IDT_RING_3   0x60
#define	IDT_INT_GATE   0x0E
#define	IDT_TRAP_GATE   0x0F
#define	IDT_KTRAP_GATE   (IDT_PRESENT + IDT_RING_0 + IDT_TRAP_GATE)
#define	IDT_KINT_GATE   (IDT_PRESENT + IDT_RING_0 + IDT_INT_GATE)
#define	IDT_ENTRY_CREATE(addr, selector, ist, flags)

Functions
struct cpu_idt_entry	__attribute__ ((packed))
void	cpu_idt_bind (void)
void	cpu_idt_describe (char *buf, uint64_t bufsz)
static void	enable_interrupts ()
static void	disable_interrupts ()

Variables
uint16_t	address_low
uint16_t	selector
uint8_t	ist
uint8_t	flags
uint16_t	address_mid
uint32_t	address_high
uint32_t	reserved
uint16_t	limit
uint64_t	base
struct cpu_idt_iframe	__attribute__

Macro Definition Documentation

IDT_ENTRY_CREATE

#define IDT_ENTRY_CREATE	(		addr,
			selector,
			ist,
			flags
	)

Value:

        {     \
        (addr)       & 0xffff, /* 16-bit address (low)  */ \
        (selector)   & 0xffff, /* 16-bit Code Selector  */ \
        (ist)        & 0xff,   /* Interrupt Stack Table */ \
        (flags)      & 0xff,   /* Flags (one byte)      */ \
        (addr) >> 16 & 0xffff, /* Second two low bytes  */ \
        (addr) >> 32,          /* Four high bytes       */ \
        0,                     /* Reserved (four bytes) */ \
}

IDT_INT_GATE

#define IDT_INT_GATE   0x0E

IDT_KINT_GATE

#define IDT_KINT_GATE   (IDT_PRESENT + IDT_RING_0 + IDT_INT_GATE)

IDT_KTRAP_GATE

#define IDT_KTRAP_GATE   (IDT_PRESENT + IDT_RING_0 + IDT_TRAP_GATE)

IDT_PRESENT

#define IDT_PRESENT   0x80

IDT_RING_0

#define IDT_RING_0   0x00

IDT_RING_1

#define IDT_RING_1   0x20

IDT_RING_2

#define IDT_RING_2   0x40

IDT_RING_3

#define IDT_RING_3   0x60

IDT_TRAP_GATE

#define IDT_TRAP_GATE   0x0F

Function Documentation

__attribute__()

struct cpu_idt_entry __attribute__

(

(packed)

)

cpu_idt_bind()

void cpu_idt_bind

(

void

)

cpu_idt_describe()

void cpu_idt_describe	(	char *	buf,
		uint64_t	bufsz
	)

disable_interrupts()

static void disable_interrupts ( )

inlinestatic

enable_interrupts()

static void enable_interrupts ( )

inlinestatic

Variable Documentation

__attribute__

struct cpu_idt_register __attribute__

address_high

uint32_t address_high

address_low

uint16_t address_low

address_mid

uint16_t address_mid

base

uint64_t base

flags

uint8_t flags

ist

uint8_t ist

limit

uint16_t limit

reserved

uint32_t reserved

selector

uint16_t selector