isr.c File Reference

#include <common.h>
#include <interrupts/isr.h>
#include <interrupts/idt.h>
#include <interrupts/pic.h>
#include <interrupts/syscall.h>
#include <hardware/pit.h>
#include <hardware/io/ps2.h>

Include dependency graph for isr.c:

Go to the source code of this file.

Macros
#define	IS_EXCEPTION(intr)   ((intr) <= 0x1F)
	whether the given interrupt vector is an exception
#define	IS_IRQ(intr)    ((intr) >= 0x20 && intr <= 0x2F)
	whether the given interrupt vector is an IRQ
#define	IS_SYSCALL(intr)    ((intr) == 0x30)
	whether the given interrupt vector is the syscall

Functions
uint8_t	isr_enable_interrupts (uint8_t enable)
	Enables or disables interrupts. More...
uint8_t	isr_get_interrupts ()
	Returns whether interrupts are enabled or disabled. More...
void	isr_register_handler (size_t intr, isr_handler_t handler)
	Registers a handler to call whenever a given interrupt is fired. More...
void	isr_register_syscall (size_t id, void *syscall)
	Registers a syscall handler to call whenever a specified syscall is requested. More...
cpu_state_t *	isr_handle_interrupt (cpu_state_t *cpu)
	Handles all interrupts. More...
void	isr_dump_cpu (cpu_state_t *cpu)
	Dumps a CPU state. More...
static cpu_state_t *	isr_handle_syscall (cpu_state_t *cpu)
	Handles all syscalls. More...
void	isr_init ()
	Initializes syscalls and enables interrupts.

Variables
static isr_handler_t	handlers [IDT_ENTRIES] = {0}
	a table that associates interrupt vectors with handlers
static void *	syscalls [SYSCALL_NUMBER] = {0}
	a table that associates syscall IDs with handlers