xv6-cs450/user1.c
rtm b61c2547b8 system call return values
initialize 2nd cpu's idt
2006-06-26 20:31:52 +00:00

36 lines
341 B
C

int
fork()
{
asm("mov $1, %eax");
asm("int $48");
}
void
cons_putc(int c)
{
asm("mov $4, %eax");
asm("int $48");
}
int
puts(char *s)
{
int i;
for(i = 0; s[i]; i++)
cons_putc(s[i]);
return i;
}
main()
{
int pid;
pid = fork();
if(pid == 0){
cons_putc('C');
} else {
cons_putc('P');
}
while(1)
;
}