USG_PG3/usr/source/clib3/getpid.s

/ getpid -- get process ID

getpid	= 20.

.globl	_getpid
.globl	_getppid

_getpid:
	sys	getpid
	rts	pc

_getppid:
	sys	getpid
	mov	r1,r0
	rts	pc