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Set PIT IRQ in main

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complete interrupt_frame struct and formatting
This commit is contained in:
Mathieu Maret 2020-04-22 16:52:54 +02:00
parent 7248cd75ae
commit a19f4cb609
3 changed files with 20 additions and 13 deletions
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10
core/interrupt.h
View File

@ -1,7 +1,15 @@
#pragma once #pragma once
#include "stdarg.h" #include "stdarg.h"
struct interrupt_frame;
// c.f. intel software-developer-vol-1 6.4.1
struct interrupt_frame {
uint32_t eip;
uint32_t cs;
uint32_t eflags;
uint32_t esp;
uint32_t ss;
};
// Exception // Exception
void print_handler(struct interrupt_frame *frame, ulong error_code); void print_handler(struct interrupt_frame *frame, ulong error_code);

10
core/main.c
View File

@ -72,14 +72,13 @@ void kmain(unsigned long magic, unsigned long addr)
if (CHECK_FLAG(mbi->flags, 6)) { if (CHECK_FLAG(mbi->flags, 6)) {
struct multiboot_mmap_entry *mmap = (struct multiboot_mmap_entry *)mbi->mmap_addr; struct multiboot_mmap_entry *mmap = (struct multiboot_mmap_entry *)mbi->mmap_addr;
uint size = mbi->mmap_length / sizeof(struct multiboot_mmap_entry); uint size = mbi->mmap_length / sizeof(struct multiboot_mmap_entry);
printf("mmap buffer at %d size %d %d\n", mbi->mmap_addr, mbi->mmap_length, sizeof(multiboot_memory_map_t) ); printf("mmap buffer at %d size %d %d\n", mbi->mmap_addr, mbi->mmap_length,
sizeof(multiboot_memory_map_t));
for (uint i = 0; i < size; i++) { for (uint i = 0; i < size; i++) {
printf("base_addr_high = 0x%x, base_addr_low = 0x%x, " printf("base_addr_high = 0x%x, base_addr_low = 0x%x, "
"length_high = 0x%x, length_low = 0x%x, type = 0x%x\n", "length_high = 0x%x, length_low = 0x%x, type = 0x%x\n",
(unsigned) (mmap[i].addr >> 32), (unsigned)(mmap[i].addr >> 32), (unsigned)(mmap[i].addr & 0xffffffff),
(unsigned) (mmap[i].addr & 0xffffffff), (unsigned)(mmap[i].len >> 32), (unsigned)(mmap[i].len & 0xffffffff),
(unsigned) (mmap[i].len >> 32),
(unsigned) (mmap[i].len & 0xffffffff),
(uint32_t)mmap[i].type); (uint32_t)mmap[i].type);
} }
} }
@ -100,6 +99,7 @@ void kmain(unsigned long magic, unsigned long addr)
printf("Setting up IRQ handlers\n"); printf("Setting up IRQ handlers\n");
irqSetRoutine(IRQ_KEYBOARD, keyboard_handler); irqSetRoutine(IRQ_KEYBOARD, keyboard_handler);
irqSetRoutine(IRQ_TIMER, timer_handler);
printf("Enabling HW interrupts\n"); printf("Enabling HW interrupts\n");
exceptionSetRoutine(EXCEPTION_DOUBLE_FAULT, print_handler); exceptionSetRoutine(EXCEPTION_DOUBLE_FAULT, print_handler);

1
drivers/pit.c
View File

@ -11,6 +11,5 @@ int pitSetup(unsigned int freq)
outb(PIT_CHAN_0, divisor & 0xFF); outb(PIT_CHAN_0, divisor & 0xFF);
outb(PIT_CHAN_0, divisor >> 8u); outb(PIT_CHAN_0, divisor >> 8u);
irqSetRoutine(IRQ_TIMER, timer_handler);
return 0; return 0;
} }