1/* $NetBSD: fork.S,v 1.1 2006/07/01 16:37:20 ross Exp $ */ 2 3/* 4 * pid = fork(); 5 * 6 * r4 == 0 in parent process, 1 in child process. 7 * r3 == pid of child in parent, pid of parent in child. 8 */ 9 10#include "SYS.h" 11 12_SYSCALL(__fork,fork) 13 addi %r4,%r4,-1 # from 1 to 0 in child, 0 to -1 in parent 14 and %r3,%r3,%r4 # return 0 in child, pid in parent 15 blr 16