kern
annotate src/syscall.c @ 51:b1e8c8251884
lalalala
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Mon, 01 Aug 2011 06:45:29 +0300 |
| parents | |
| children | fa65b4f45366 |
| rev | line source |
|---|---|
| nuclear@51 | 1 #include <stdio.h> |
| nuclear@51 | 2 #include "syscall.h" |
| nuclear@51 | 3 #include "intr.h" |
| nuclear@51 | 4 #include "proc.h" |
| nuclear@51 | 5 #include "sched.h" |
| nuclear@51 | 6 #include "timer.h" |
| nuclear@51 | 7 |
| nuclear@51 | 8 static int (*sys_func[NUM_SYSCALLS])(); |
| nuclear@51 | 9 |
| nuclear@51 | 10 static void syscall(int inum, struct intr_frame *frm); |
| nuclear@51 | 11 |
| nuclear@51 | 12 static int sys_exit(int status); |
| nuclear@51 | 13 static int sys_hello(void); |
| nuclear@51 | 14 static int sys_sleep(int sec); |
| nuclear@51 | 15 |
| nuclear@51 | 16 void init_syscall(void) |
| nuclear@51 | 17 { |
| nuclear@51 | 18 sys_func[SYS_EXIT] = sys_exit; |
| nuclear@51 | 19 sys_func[SYS_HELLO] = sys_hello; |
| nuclear@51 | 20 sys_func[SYS_SLEEP] = sys_sleep; |
| nuclear@51 | 21 |
| nuclear@51 | 22 interrupt(SYSCALL_INT, syscall); |
| nuclear@51 | 23 } |
| nuclear@51 | 24 |
| nuclear@51 | 25 static void syscall(int inum, struct intr_frame *frm) |
| nuclear@51 | 26 { |
| nuclear@51 | 27 int idx = frm->regs.eax; |
| nuclear@51 | 28 |
| nuclear@51 | 29 if(idx < 0 || idx >= NUM_SYSCALLS) { |
| nuclear@51 | 30 printf("invalid syscall: %d\n", idx); |
| nuclear@51 | 31 return; |
| nuclear@51 | 32 } |
| nuclear@51 | 33 |
| nuclear@51 | 34 frm->regs.eax = sys_func[idx](frm->regs.ebx, frm->regs.ecx, frm->regs.edx, frm->regs.esi, frm->regs.edi); |
| nuclear@51 | 35 schedule(); |
| nuclear@51 | 36 } |
| nuclear@51 | 37 |
| nuclear@51 | 38 static int sys_exit(int status) |
| nuclear@51 | 39 { |
| nuclear@51 | 40 return -1; /* not implemented yet */ |
| nuclear@51 | 41 } |
| nuclear@51 | 42 |
| nuclear@51 | 43 static int sys_hello(void) |
| nuclear@51 | 44 { |
| nuclear@51 | 45 /*printf("process %d says hello!\n", get_current_pid());*/ |
| nuclear@51 | 46 return 0; |
| nuclear@51 | 47 } |
| nuclear@51 | 48 |
| nuclear@51 | 49 static int sys_sleep(int sec) |
| nuclear@51 | 50 { |
| nuclear@51 | 51 int pid = get_current_pid(); |
| nuclear@51 | 52 /*printf("process %d will sleep for %d sec\n", pid, sec);*/ |
| nuclear@51 | 53 start_timer(sec * 1000, (timer_func_t)unblock_proc, (void*)pid); |
| nuclear@51 | 54 block_proc(pid); |
| nuclear@51 | 55 return 0; |
| nuclear@51 | 56 } |