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PREEMPTIVE MULTITASKING!!!!

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Tom-on
2025-05-06 19:29:35 +02:00
parent a48fa362d0
commit c646404cf0
14 changed files with 215 additions and 103 deletions
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kernel/src/kernel.c
+30 -4
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@@ -10,6 +10,8 @@
#include <pmm.h>
#include <tty.h>
void test(void);
__noreturn
void kmain(void* ptr, uint32_t magic) {
if (boot_init_mb1(ptr, magic) != 0) panic("Unsupported bootloader.");
@@ -20,6 +22,8 @@ void kmain(void* ptr, uint32_t magic) {
// System init
if (gdt_init() != 0) panic("Failed to initalize GDT.");
debugf("[gdt] Segment selectors: NULL: 0x%04x, KCODE: 0x%04x, KDATA: 0x%04x, UCODE: 0x%04x, UDATA: 0x%04x, TSS: 0x%04x\n",
GDT_NULL, GDT_KERNEL_CODE, GDT_KERNEL_DATA, GDT_USER_CODE, GDT_USER_DATA, GDT_TSS);
if (isr_init() != 0) panic("Failed to initalize ISRs.");
if (pag_init() != 0) panic("Failed to initalize Paging.");
@@ -34,14 +38,36 @@ void kmain(void* ptr, uint32_t magic) {
if (timer_init() != 0) panic("Failed to initialize timer.");
if (task_init() != 0) panic("Failed to initialize tasking.");
// TODO: Scheduler
// Create a temporary test task
task_create(task_create_id(), (uint32_t)test, 1, pag_get_pagedir(), 0, NULL);
size_t delay = 0;
while (1) {
delay++;
if (delay < 0x1FFFFFF) continue;
delay = 0;
tty_puts("[kernel] Hello!\n");
}
// TODO: Syscalls
// TODO: Interprocess communication
// TODO: Tasking
// TODO: Load & run /sbin/init
while (1);
panic("kmain() reached end.");
}
// An imaginary second task
void test(void) {
size_t delay = 0;
while (1) {
delay++;
if (delay < 0x2FFFFFF) continue;
delay = 0;
tty_puts("[test] Hello!\n");
}
}