blob: 3ba300e40302873cc354db405aa7cb2fff8fbcea (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
/* $NetBSD: fork.S,v 1.1 2014/09/03 19:34:26 matt Exp $ */
/*
* pid = fork();
*
* r12 == 0 in parent process, 1 in child process.
* r11 == pid of child in parent, pid of parent in child.
*/
#include "SYS.h"
_SYSCALL(__fork,fork)
l.addi r12,r12,-1 # from 1 to 0 in child, 0 to -1 in parent
l.and r11,r11,r12 # return 0 in child, pid in parent
l.jr lr
l.nop
END(__fork)
|
