1 /* 2 * Copyright (c) 1983 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #if defined(LIBC_SCCS) && !defined(lint) 19 .asciz "@(#)getpid.c 5.1 (Berkeley) 04/12/91" 20 #endif /* LIBC_SCCS and not lint */ 21 22 #include "SYS.h" 23 24 .data 25 .globl mypid, myppid 26 mypid: 27 .long 0 28 .text 29 30 ENTRY(getpid) 31 movl mypid,r0 # check cache 32 beql doit 33 ret 34 doit: 35 chmk $SYS_getpid 36 jcs err 37 movl r0,mypid # set cache 38 movl r1,myppid # set cache 39 ret # pid = getpid(); 40 err: 41 jmp cerror; 42