NetBSD/lib/libc/arch/powerpc/sys/Ovfork.S

19 lines
461 B
ArmAsm

/* $NetBSD: Ovfork.S,v 1.3 1998/12/02 19:29:57 thorpej Exp $ */
/*
* pid = vfork();
*
* r4 == 0 in parent process, 1 in child process.
* r3 == pid of child in parent, pid of parent in child.
*/
#include "SYS.h"
WARN_REFERENCES(vfork, \
"warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
SYSCALL(vfork)
addi 4,4,-1 # from 1 to 0 in child, 0 to -1 in parent
and 3,3,4 # return 0 in child, pid in parent
blr