src/userspace/programs/init.c


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#include <common.h>
#include <gui.h>
#include <stdio.h>
#include <stdlib.h>
#include <syscall.h>
#include <unistd.h>

u32 cpu_flags()
{
	u32 flags;
	asm volatile("pushf\n"
		     "pop %0\n"
		     : "=rm"(flags)::"memory");
	return flags;
}

int interrupts_enabled()
{
	return (cpu_flags() & 0x200) == 0x200;
}

void main()
{
	if (get_pid() != 1) {
		printf("Wrong PID!\n");
		exit(1);
	}

	if (interrupts_enabled())
		printf("INTs enabled :)\n");
	else
		printf("INTs disabled :(\n");

	// TODO: Fix page fault when mallocing
	printf("Initializing userspace...\n");

	// TODO: Find out, why processes change pid randomly
	// TODO: Fix occasional race conditions with cli/sti
	// TODO: Fix scheduler turning off at some point
	spawn("/bin/sh");
	if (interrupts_enabled())
		printf("INTs enabled :)\n");
	else
		printf("INTs disabled :(\n");

	while (1) {
		//printf("B");
	};
}