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Register timer callback

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This commit is contained in:
Braiden Vasco 2017-11-03 05:10:07 +00:00
parent 23180a23bd
commit c5135b4a5d
5 changed files with 45 additions and 1 deletions
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22
arch/hwint.c
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@ -1,3 +1,5 @@
#include "hwint.h"
#include "config.h"
#include "asm.h"
#include "logger.h"
@ -28,6 +30,8 @@ static const char *const messages[] = {
"Unhandled hardware interrupt: 15",
};
static hwint_handler_t handlers[INT_HWINT_COUNT] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
void hwint_handler(struct IsrRegisters regs)
{
if (
@ -49,5 +53,21 @@ void hwint_handler(struct IsrRegisters regs)
const unsigned char hwint_no = regs.int_no - INT_HWINT_FIRST;
logger_warn(messages[hwint_no]);
const hwint_handler_t handler = handlers[hwint_no];
if (!handler) {
logger_warn(messages[hwint_no]);
return;
}
handler();
}
void hwint_register_handler(unsigned int int_no, hwint_handler_t handler)
{
if (int_no >= INT_HWINT_COUNT) {
return;
}
handlers[int_no] = handler;
}

4
arch/hwint.h
View file

@ -1,6 +1,10 @@
#ifndef KERNELMQ_INCLUDED_HWINT
#define KERNELMQ_INCLUDED_HWINT 1
typedef void(*hwint_handler_t)();
void hwint_register_handler(unsigned int int_no, hwint_handler_t handler);
void hwint_0();
void hwint_1();
void hwint_2();

9
arch/main.c
View file

@ -3,6 +3,8 @@
#include "protected.h"
#include "timer.h"
static void on_timer();
void main(struct KernelMQ_Multiboot_Info multiboot_info)
{
logger_initialize();
@ -12,8 +14,15 @@ void main(struct KernelMQ_Multiboot_Info multiboot_info)
logger_info("Kernel initialization started.");
protected_initialize();
timer_register_handler(on_timer);
timer_initialize(50);
logger_warn("Nothing to do.");
logger_fail("Halt.");
}
void on_timer()
{
logger_info("Timer tick.");
}

5
arch/timer.c
View file

@ -16,3 +16,8 @@ void timer_initialize(unsigned int frequency)
outportb(0x40, l);
outportb(0x40, h);
}
void timer_register_handler(timer_handler_t handler)
{
hwint_register_handler(0, handler);
}

6
arch/timer.h
View file

@ -1,6 +1,12 @@
#ifndef KERNELMQ_INCLUDED_TIMER
#define KERNELMQ_INCLUDED_TIMER 1
#include "hwint.h"
typedef hwint_handler_t timer_handler_t;
void timer_initialize(unsigned int frequency);
void timer_register_handler(timer_handler_t handler);
#endif