ack/mach/pdp/libsys/vfork.s
1987-05-14 17:45:41 +00:00

19 lines
214 B
ArmAsm

#include "sys.h"
.define _vfork
.extern _errno
_vfork:
mov (sp)+,r1
sys vfork
br 1f
bcc 2f
3: mov r0,_errno
mov $-1,r0
jmp (r1)
1: ! child, or vfork systemcall does not exist
bcs 3b
clr r0
2:
jmp (r1)