ack/plat/pdpv7/libsys/vfork.s

19 lines
214 B
ArmAsm
Raw Normal View History

1987-01-07 17:13:41 +00:00
#include "sys.h"
1987-05-14 17:45:41 +00:00
.define _vfork
.extern _errno
1987-01-07 17:13:41 +00:00
_vfork:
mov (sp)+,r1
sys vfork
br 1f
1987-05-14 17:45:41 +00:00
bcc 2f
1987-01-07 17:13:41 +00:00
3: mov r0,_errno
mov $-1,r0
jmp (r1)
1987-05-14 17:45:41 +00:00
1: ! child, or vfork systemcall does not exist
bcs 3b
1987-01-07 17:13:41 +00:00
clr r0
2:
jmp (r1)